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LogWorks 2 User Manual

1. and so on You can then connect these terms with AND or OR LogWorks will process the entire session and select those areas which satisfy the search criteria In the above example all lean spots leaner than 14 7 AFR are selected where the engine is under boost and the throttle position is bigger than 60 Do not specify a unit like after 60 or PSI after 0 PSI Note that the input names are case sensitive Afr would be different than AFR Make sure you type the input name correctly Click on the Add to Search Library button to add the search term to a search library The search library holds frequently used searches When clicking the button a dialog will show up that will allow you to specify the name category and comment for the library entry See section 7 LogWorks Libraries for details 4 6 6 Search Library Brings up a list of stored searches See section 7 LogWorks Libraries for details 41 Logworks2_Manual_1 1 doc 4 6 7 Go to next selection This menu item equivalent to a search function jumps directly to the beginning of the next selection created by for example the Autoselect function It also puts a temporary measurement point at that point 4 6 8 Select whole session Equivalent to the select all function of other programs Selects the entire session 4 6 9 Delete Selection Deletes the selected area from a session Note Only areas at the beginning or end of a session can be deleted Delet
2. x 3 a z power x 10 hp 12 0 _ RPM 1000 Print CO XXX Li Again one can see that at the leaner AFR of the overlayed session the torques are higher except at the low RPMs below about 4500 From about 7000 RPM on the overlay torque curve is lower because the AFR s are richer than in the original session Creating a 3D chart of the torque vs AFR and RPM dependency for the selected WOT areas shows what optimum AFR should be used for max power This chart is created from only 4 runs Session 1 4 but illustrates how LogWorks can be used for optimization More runs will refine the results 89 Logworks2_Manual_1 1 doc This shows maximum torque is reached at 5000 RPM and 13 33 AFR Here s the same chart as a 3D surface 2 torque bfi 0 120 122 124 126 128 130 13 2 134 136 138 140 LMI 02 CAR One can clearly see the trend to a torque peak 1 at about 13 3 13 4 AFR for this particular engine at that engine s current timing settings A secondary peak exists at a different RPM at 2 The key to good tuning of course is to arrive at the maximum torque achievable without engine knock by varying both timing and fueling 90 Logworks2_Manual_1 1 doc 10 Interfacing with various sensors 10 1 Electronic parts basics 10 1 1 Diodes Diodes let current pass in one direction Anode A to Cathode K and block curre
3. Logworks2_Manual_1 1 doc x Category fall DI Formula Fuel flow lb hr from duty cycle D Formula Description Fuel flow inj duty cycle requires user input of inj spec lb hr and spec d fuel pressure PSI fuel pressure PSI above Manifold pressure no rising pressure regulator Save Changes Delete Formula Edit Formula d With the uppermost field you can select or edit the category the calculation belongs to In the middle field you select or edit the formula name The lowest field shows and allows you to edit a short description of the formula To delete the formula from the library click on the Delete Formula button To save possible changes you made to the name category or description click on the Save Changes button To change the formula itself click on the Edit Formula button The Trace Calculator dialog box will show up and allow you to change the formula To execute the selected formula click on the Use Formula button Note When entering user values in a formula during use the entered values are stored in the library as defaults so that they don t have to be entered every time the formula is used For a tuner that tunes multiple cars it would be of advantage to copy the libraries to a different customer specific folder as the libraries contain the last default values Then copy the libraries to the LogWorks Folder when the customer car is retuned This way the customer
4. click on the column or row header where you want to insert a new row or column Then select in the Edit menu New column left or right if you want to add a column or New row above or below if you want to add a new row The bin value of the row column is initially the average of the neighboring rows or columns 5 3 2 Changing row or column values To change the value of a column or row header double click on the column or row header The column row entry will become editable ut pts t When you are done entering a new value hit the Enter key to make the change permanent The row column will be inserted at the right place in ascending order 55 Logworks2_Manual_1 1 doc 5 3 3 Copying pasting row and column settings To copy row and column settings select the column row headers you want to copy by clicking and dragging over the header Then select in the Edit menu Copy Selection To paste new values in the row and column headers select the rows or columns which you want to replace with the copied settings Then select in the Edit Menu Paste Settings NOTE You can also pasie in settings created by other programs like Excel as long as these programs put the values as tab delimited text on the clip board of the computer 5 3 4 Changing the Chart channels In the Table menu select Table Setup the following dialog box appears Chart Settings m Horizontal Axis Channel RPM D From fo to Dom RPM Number of steps 1
5. t connect button Check the Connect on this port in the future checkbox if you want to auto connect on the selected port always in the future you can change that later on if you wish LogWorks can also be started by dragging one or more log files on the LogWorks icon if you installed one on the desktop In this case the log files will be opened automatically A Make sure no other program including LM Programmer or LM 1 Manager is using the selected serial port 17 Logworks2_Manual_1 1 doc 3 2 The LogWorks Main Window After this the main window of LogWorks the LogWorks Monitor appears BEE File Channels Dials Colors Window Preferences This window is resizable by grabbing on the lower edge of the window All gauges are grayed out until a LogWorks is connected to the Log Chain b A valid serial data stream is detected on the serial port c The appropriate input is enabled When this happens the window might look like this F LogWorks Monitor ox File Channels Dials Colors Window Preferences H Input2 ai Wa 5 i 5 0 Input Input4 Inputs tv tv tv 18 Logworks2_Manual_1 1 doc 3 2 1 Changing the preferences for units Preferences Use international units m kg degC v Use US units ft lb degF This menu allows you to set your preferences for unit calculations and for displaying channels A lot of calculations are different when US units vs international units ar
6. the RPM slope of session 3 is flatter The engine made less power but AFRs are richer than in that area You can also see than when you compare the WOT rows in the charts of the session Session 1 Throttle 4 RPM AFR 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 8000 8500 100 13 4 13 4 13 1 13 0 12 9 13 0 12 7 126 12 6 12 4 12 3 12 3 12 4 12 4 123 Session 3 Throttle 4 RPM AFR 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 8000 8500 You can see that the power curve can be improved by richening up the fields below 4500 RPM and leaned out in the fields at 7000 RPM and above 88 Logworks2_Manual_1 1 doc This can be even better analyzed when using the Math Trace Calculator Library and the X Y Plot function For this example all the WOT runs in Session 1 4 in the example file are selected The RPM trace is smoothed in those sessions to 1 06 seconds Then using the Math library torque and horsepower are calculated from gear ratios tire diameter cars frontal area weight and aerodynamic coefficient and the RPM slope The run in Session 3 is overlayed on session one and torque power and AFR together are shown on the X Y plot W Log File XYPlot RPM LM1_02 Ioj x X axis Y axis Min Max Measured Time 29 49 sec 13 5 140 13 0 io KH Su SE GE sa kel 2 0
7. 3 MEN e 4 10 4 LEIT 4 10 5 Renata seen es ed e 4 10 6 Niewt ciccsareads cactavaccaavsvencteies ata acess 3D charts and oraphs eee eeeeeeeeeeteeeeeenteeeeeeee 5 1 The 3D Chart WINKOW cesseeeeceeeeeeeseen sees 5 2 Selecting data to base the chart on 5 3 Manipulating the chart settings 5 3 1 Adding a column or row 5 3 2 Changing row or column values 5 3 3 Copying pasting row and column settings Logworks2_Manual_1 1 doc 8 9 10 5 3 4 Changing the Chart channels 0 000 eeeeceeeeeeeeeeneee cree eeeeaaeeeaeeeaeeeeeeeeeseeeeeaeenes 56 5 3 5 Deleting rows or COIUMINS 00 cece ee eeeeee eee eeeeeeeeeeeeaeeeeeeaaeeeeeeaaeeeeeeeaaeeeeeenaeeeeneaas 56 5 4 Golonizing KE HEEN 57 5 5 UE Ee LEE 57 5 5 1 Creating a user SUD Charrt 0 c ce eeeeceeeeeceeeee cee eeeeaeeceeeeeseaeeeseaeeseaeeseaeeesaaeeneneeeeaees 57 5 5 2 Entering data in a user sub chart eee cece ee eeenee eee eeeeaeeeeeeaaeeeeeeaaeeeeeeaaeeeeeeeaas 58 5 6 Exchanging chart data with other programs ssssseessessseesseessseessesrnrsrersnrsrennnrnn s 58 BiG SAVING CHAINS EE 58 5 6 2 Copying and pasting Chart data 58 5 7 Overlayng Ke ET 58 5 8 Viewing a sub chart aS 2U orapb ee eeeeeeeeeeeeeeeeeeaeeeeeeeaeeeeeeaaeeeeeeeaeeeeeeaeeeeneaaes 60 5 8 1 Manipulating the graph view 62 E EE 62 5 8 3 Overlays ON 3D graphS ceeeececeee ee eeeceeeeeceaeeeeeae
8. 595 Lambda In the first case it is then still a 10 bit range with a resolution of 0 001 Lambda In the second case itis a 10 bit range with a resolution of 0 004 Lambda The LMA 3 internally digitizes with a 16 bit ADC It then uses the extra resolution to filter out noise and finally reduce the resulting resolution to 10 bit for the MTS data stream NOTE LogWorks always stores all channel data in the 10 bit raw format as digitized How the numbers are interpreted for the user display depends on the user settable channel configuration But the raw stored 10 bit numbers will not get changed when the interpretation changes Q Logworks2_Manual_1 1 doc 2 2 Sensors and the Modular Tuning System The Innovate modular tuning system MTS consists of various devices to measure digitize and record various engine parameters Typically these parameters are sensed by different sensors built either into the engine itself or into MTS components These sensors measure for example temperatures pressures air flow air fuel ratio and so on Sensors convert the measured quantity into an electrical signal typically a voltage between 0 and 5V which can be logged or displayed by the MTS components The sensors can be categorized generally into four different groups depending on the output they produce a Voltage output sensors with external supply These sensors have mostly 3 pins One for the supply voltage typically 5V one for the output signal
9. Automatic unit conversions Enter vehicle weight in lb m F m ACCEL g The curly braces around the desired unit after a channel name recalculates that channel temporarily to the new unit Once a channel is converted you can t convert it again in the same calculation The converted channel will be used for the rest of the calculation and further s after a channel name will be ignored If a question for a channel name is asked from the user the automatic unit conversion can also be automatically invoked to make sure the channel is correct for the calculation i Enter your acceleration channel a g This recalculates the acceleration channel into gs temporarily If the unit conversion requested is unknown to LogWorks a dialog box will pop up that asks how to convert the unit Unknown Conversion Target x Cannot convert ACCEL from mile hoursec to g Enter conversion formula Use oui as place holder for the original unit o ou 21 9368514 Go _ The formula uses ou as placeholder for the original unit Enter the formula and the calculation will proceed For details on the unit conversion see chapter 8 How LogWorks unit conversions work 73 Logworks2_Manual_1 1 doc 6 7 Formula Calculator Functions Rules e If a function uses multiple arguments like floor x 10 the arguments are separated by semicolons The Formula Calculator has the following built in functions operators constants and
10. LMA 3 the threshold is 1V for the LMA 2 or 2 5V for the LMA 3 Ground offsets of 1V or 2 5V will not allow the device to measure correctly Another problem can be ground bounce If the signal generating device for example an ignition system creates very high current pulses it s ground can momentarily jump over the threshold of the measuring device because of the high current These ground bounce pulses are measured as false frequencies and can interfere with the measurement 11 Logworks2_Manual_1 1 doc Another problem in sensor hookup is called induced noise In an engine compartment very high current pulses are routed many different places These current pulses can come from the injectors ignition system or alternator Any changing current flowing through a conductor creates a changing magnetic field A changing magnetic field intersecting another conductor for example the sensor wires will create a voltage along that conductor This voltage is added as noise to the sensor signal This is how an antenna for radio signals works as well By twisting the sensor output and sensor ground wire together that induced noise can be minimized Each twist creates a wire loop acting as small antenna to pick up the induced noise BUT the noise induced in each loop changes polarity from loop to loop This way each twist loop cancels out the noise from the previous loop The tighter the twist the more cancellation can be achiev
11. RER ESERE AET EEEE 82 ZS FUCLIMG CAICUIATIONS kesesine eerstes Eeer rE En EAE es eb tobi GET gen 82 7 4 Library AATA i Ea a EE A A ealeel Seth edavtzeevesbesdsooeelins 82 TAT Name COMMON is cererii ar eves ARA AEAEE dented TERENA eA AEEA TEATER 82 E e eene ul EE 82 LAS __DOSErIPtIOM COMMENT icrai AT Near ArNe EENT Ar sung ATTON ESANAK SNE AEAN ENA 83 How LogWorks unit Conversions work 84 8 1 Conventions ON unit names eeeeee eens cece eeeeaeeeeeeeeeeaeeeseaeeeeeeeseaeeesaeessaaeeseneeess 84 8 1 1 Temperature Convention 84 8 1 2 Pressure convention cc ceeeecceceeeeeeeeeeneneeeeeeseneeseeneneeeeensneeseeneneeeeeeseneeesenenees 84 8 2 The Conversions txt Tomat 85 Tips amp Tricks for USING LogWorks ssessseesssesssessressrtssrnsstnttntttnntnntnnntnnntnnnsnnnnnntnnen nenn 87 Interfacing with various Sensors ccceeeeeeeceeeeeceeeeeeeaeeceeeeeeaeeesaaeseeaeeseeeeseeaeeseaeeseeeeess 91 10 1 Segel ee le 91 10 1 1 Biel 91 10 1 2 de 91 10 1 3 Ee 91 10 1 4 Capacitors Cape 92 10 2 Intake air temperature IAT or Coolant Sensors CT 92 10 2 1 Calibrating thermistor sensors eese teeeteeeetentttnn tenn tennttnnnnnnsenn ne 92 4 Logworks2_Manual_1 1 doc 11 10 2 2 TAGFMIStOF E T e E A sect ec ee deu 93 10 2 3 Using the Thermistorcale program c cccceececeeeeeeeeeeeeeeeeeeeseneeeeeeeeeeaeeeeeeeaeees 94 10 3 Using extern
12. The sessions in a log are numbered from 1 through x Typically they are sequential in time starting with the oldest session as session 1 and so on Each log can be stored in a separate file on the computer Each session can be renamed so it does reflect something more meaningful than just a numbered sequence In addition each log contains the information on how to convert the digitized numbers see Logging engine data into the original quantities These so called channel settings apply to all sessions in a log LogWorks distinguishes three different kinds of logs a Real time log This is a log created by connecting a computer to the MTS log chain and recording the real time data stream from the MTS devices to the computers hard drive New sessions can be added at any time by starting to record the serial stream Only one real time log can be open at any time The current real time input settings apply to the real time log b LM 1 log This is a log created by downloading log data from the LM 1 s internal memory but not yet stored in a file Only one LM 1 log can be open at any time The current real time input settings apply to LM 1 log NOTE The LM 1 has to be the first device in a log chain Therefore the only channels it can see are its own AFR channel and the 5 channels on its Aux input The LM 1 can NOT record any other channels downstream in the log chain c File logs File logs are data files created by LogWorks when sa
13. These libraries are used to store frequently used searches or calculations When using the LogWorks Log Window the Trace Libraries or the search Library is used When using the 3D chart the Chart Library is used Each library entry or formula has a name under which it can be easily identified and optionally a category to which it belongs to further simplify and find calculations or searches So that distracting duplicate entries are avoided the Trace Library is divided into two parts One part is in US units the other in international units You select which Library is used by selecting the appropriate Preferences in the LogWorks Main Window menu Libraries are plain text files So they can be opened and edited by any text editing program even the simple Notepad program built into Window In practice this is rarely necessary because the Library editor built into LogWorks can accomplish all Library management tasks For details on the file format of Library text files see chapter 7 4 Library formats The library files must be in the same folder as the LogWorks exe program for LogWorks to find them 7 1 Using the Libraries 7 1 1 Basic usage Log Window Select Formula Collection in the Tools menu for trace calculations Select Search Library in the Edit menu for frequently used searches 3D chart window Select Chart Calculator Library in the Table menu for chart calculations The following dialog box will appear 78
14. Where m Print range Copies D GER Number of copies fi 4 Current Session From fo to 38 Current Window secs Jl T Collate IT Print Notes Show vertical scales Presentation Ce On first page only E Expanded Timescale as shown On all pages shown Expanded vertical scales as Cancel This dialog is divided into four sections 38 Logworks2_Manual_1 1 doc In the Printer section select the printer to use Usually you do not need to touch this section The Print range section allows you to select the time range you want to print Also selects whether you want to print the content of all the text notes as well The Presentation section allows you to select if you want to show the time scale or vertical scales for each input expanded as in the window or at their normal 1 1 scale The Show vertical scales section allows you to select if you want to show the vertical scales on the left of the graph on every page or only on the first one Showing it only on the first page allows you to glue the pages of a long session together as a strip chart 4 5 9 Close Closes the log window 39 Logworks2_Manual_1 1 doc 4 6 Log Window Edit Menu Edit Copy Cla Paste as Overlay Gtr Paste as new Session Ins Remove Overlay Alt O Autoselect Ctrl F Search Library Go to next selection Ctrl G Select whole Session CTrl A Delete S
15. achievable for the selected hue and saturation Changing gauge depth position relative to other gauges Use the Dials menu to change the gauge relative position and other positioning aspects Dials Edit dial Delete dial Send to back Bring to Front Align horizontal Align vertical Equalize size Send to back Puts the gauge in the background behind other gauges if gauges overlap This is useful when for example using vertical bar gauges to show for example multiple AFR or EGT channels By positioning the bar gauges such that the next gauge to its left overlaps the gauges scale a multi bar gauge can be constructed with minimum screen real estate usage In this case you would use Send to back successively on the gauges from left to right This way the rightmost gauge would be furthest back 20 Logworks2_Manual_1 1 doc Bring to front This is the opposite of Send to back It brings the gauge all the way in front of other gauges if gauges overlap Align horizontal If multiple gauges are selected LogWorks calculates the average vertical center position of all selected gauges and moves the selected gauges such that their centers align on the same horizontal line positioned at the average vertical center position of the selected gauges Align vertical Same as Align horizontal but the selected gauges are aligned vertically Equalize Size The average size of the selected gauges is calculated and the selected gauges are s
16. few examples on how to use the chart calculator Example 1 Filtering the chart so that only values with more than 50 datapoints are used chart_num chart_num gt 50 chart _num In this case the number of datapoints is reset to 0 empty if it has less than 51 datapoints in it The term chart_num gt 50 evaluates to 1 if the number of datapoints in the bin is more than 50 otherwise to 0 So chart_num stays either the same chart_num 1 chart_num or becomes 0 chart_num 0 0 76 Logworks2_Manual_1 1 doc Example 2 Calculating a horsepower sub chart from a chart containing torque For this example the chart_average view contains the engine torque in Ibft the column headers horizontal axis of the chart are in RPM MC power chart_avrg chart_X 5252 Example 3 Calculate a new fuel map based on an existing fuel map sub chart and a target AFR sub chart Requirements a b C d The chart_average view contains the measured AFR over RPM and MAP MAF or Throttle position There is a sub chart named current_map that contains the current fuel map There is a sub_chart named target_afr that contains the target AFRs for each bin The fuel map is linearly related to the injector duty cycle where 0 means no fuel and some max value means 100 injector duty cycle MC new_map current_map chart_avrg target_afr 77 Logworks2_Manual_1 1 doc 7 LogWorks Libraries LogWorks has multiple libraries
17. intermediate results of that calculation You can cut and paste in the left window pane using the standard Window cut and paste shortcuts like Ctrl X for cut Ctrl C for copy and Ctrl V for paste Right clicking in the pane brings up a standard Window edit menu that can also be used for cut n paste With the Channel menu you can insert a channel name in the current cursor location without having to type in the name carefully and correctly NOTE Trace calculations can t be executed in realtime while recording 66 Logworks2_Manual_1 1 doc 6 1 Calculator basics You can write formulas however you want to create new channels from existing data or calculate stuff There are certain rules you need to follow The following examples show how to use the Calculator Formulas and calculations can be entered as described in the examples By right clicking in the formula window you can also cut and paste formulas in as text from any program Comments can be added in the calculation by putting a as the first character in a line Example 1 Calculate Force in Ib force from car mass Ib and acceleration in g Thanks Isaac N m is vehicle weight in 1b m 3000 a is acceleration in g a 0 4 F m a In this example acceleration a is 0 4 g and vehicle mass is 3000 Ib The result window shows the acceleration force Enter the text or copy it from this manual and press the Calculate button In the LogWorks Calculator multi
18. known under various conditions Measuring rates of 1000 2000 times second are required to calculate shock velocity and travel amplitude But again this data can be processed on the fly and then get logged at lower speeds by modern microprocessors 8 Logworks2_Manual_1 1 doc 2 1 3 Logging resolution Logging most channels involves interpreting voltages Typically for most of today s sensors the voltage range is 0 5V When a data logger reads these voltages they are converted into a number that is represented digitally Converting the voltage to that number is the task of an analog to digital converter abbreviated A D or ADC The highest number a A D can represent conforms to the max voltage it can read and also determines the finest resolution it can read The number of bits of the ADC specifies that highest number For example for an 8 bit A D the highest number is 255 2 to the power of 8 minus 1 It could resolve the input voltage into 5 256 Volts For a 10 bit A D the highest number is 1023 and the resolution is 5 1024 Volts So the resolution for any sensor is Range 2 to the power of number_of_bits or Range 2 N Where N is the number of bits of the ADC Most MTS devices that read external voltages or internal sensors use 10 bit resolution A D s The exception is the AFR Lambda data Even though the Lambda range goes from 0 5 to infinite it is limited for logging purposes to 0 5 to 1 523 Lambda or possibly 0 5 to 4
19. ordered from www digikey com The circuit can measure between 0 degC 32 degF at OV output and 1100 degC 2012 degF at 5V output LMWA 2 or LMA 3 Thermocouple CHx only on LMA 3 99 Logworks2_Manual_1 1 doc 10 6 Measuring duty cycle of peak hold injectors Peak Hold injectors are also called low impedance injectors The voltage at the active pin of those injectors during an injection pulse first goes to ground the peak phase and then rises to 5 to 10 Volt the hold phase Because for the LMA 3 everything above 2 5V is high the LMA 3 can see only the peak phase in many cases but not the hold phase The following circuit allows the LMA 3 to be used with regular injectors as well as with peak hold injectors NOTE Some ECU s control PH injectors in PWM mode This means that they at first ground the injector s active pin during the peak phase and then rapidly switch ground on and off during the hold phase This circuit will NOT work for that method of control 12 from 127 side Diode of injector 4N4007 ON LMA 2 or LMA 3 E AFS PNP Transistor e B E To o like 2N3906 l bottom Injector 2N3906 pinout VW CHx i Diode 1N4007 JE K A 4 CHx only on LHA 2 Ground When setting up the duty cycle measurement in LogWorks positive duty cycle must be used compared to negative duty cycle as when the LMA 3 is directly connected to an injector 10 7 Making a 5 Volt supply for external sensors Thi
20. pane If you get lost zooming and panning the camera angle and zoom value can be reset at any time by selecting in the Graphic menu Reset Camera Position 5 8 2 Glyphs Glyphs are in computer visualization indicators of additional data drawn on a visualized view LogWorks can show the Standard Deviation or the Min Max points of each bin as glyphs In the Graphic menu select Indicate Std Dev or Indicate Min Max Values to show the glyphs for Std Deviation or Min Max The glyphs are indicated as vertical lines emanating above and below a data point The end points of the lines indicate the Min or Max values or the deviation inside the bin from the average value NOTE Glyphs can be added only when the current view shows the average values of the bins Here s a view of a Min Max glyphed surface 62 Logworks2_Manual_1 1 doc 5 8 3 Overlays on 3D graphs Just as you can in the table view of the charts you can overlay another sub chart in the graph view as well Select which sub chart you want to overlay in the View menu Overlays are shown in gray half transparent as in this view RPM Here the number of datapoints sub chart is overlayed on the colorized average view As the sessions included in this chart are mostly at WOT most of the datapoints are located at the WOT line 63 Logworks2_Manual_1 1 doc 5 9 Calculations with charts You can use the Math calculator built into LogWorks with charts as well It i
21. s last calculation values are restored as defaults 7 1 2 Adding a new formula to a library If you entered a new formula in either the Trace calculator Chart calculator or Auto search window you can make it a new library entry by clicking the Add to Library button in the calculator or search window The same dialog box as above will show up Enter the name of the new formula in the middle field Enter a short description in the bottom field Select a category or enter a new one in the uppermost field 79 Logworks2_Manual_1 1 doc 7 2 LogWorks built in Trace calculations These are the calculations built into LogWorks for calculating new channels or traces Check on the Innovatemotorsports web site www I Innovatemotorsports com for additional calculations as they become available To understand the calculations a few things must be known by the user a Every calculation is only as good as the data used as basis for the calculation This is especially true for horsepower and torque calculations b Many time based calculations are based on an engine cycle A 4 stroke engine cycle requires 2 engine revolutions 7 2 1 Category Fuel Calculations Fuel flow lb hr from duty cycle US or cc min for Internat Requires you to enter the specs of the injectors used lb hr or cc min their rated pressure in PSI US or kPa int the injector duty cycle channel name easy if you have an LMA 3 the fuel pressure the regulator is
22. session is left it cannot be deleted logs can t be empty 4 7 4 Session selection Select which session you want to view manipulate 44 Logworks2_Manual_1 1 doc 4 8 Log Window Channel Menu Channels Set Grid to Show Hide Channel Smooth Channel Configure Channel Delete Channel Recalculate Math channels Change Trace Colors Apply default smoothing Save current smoothing as default PORY E v Show Mixture as AFR Show Mixture as Lambda Set Fuel type 4 8 1 Set Grid to This submenu allows you to change the graph pane grid to the selected channel without moving the vertical scale next to the graph pane 4 8 2 Show Hide Channel Hides Shows a channel trace and scale Same as described in section 2 8 1 Hide Channel 4 8 3 Smooth Channel Same as described in section 2 8 4 Smooth Channel 4 8 4 Configure Channel Brings up the channel configuration dialog box as described in Section 2 3 1 Configuring the channels for the selected channel Input configuration changes performed in the real time log window also apply to the LogWorks main window and vice versa The same is true for the LM 1 log window File log input changes only affect the current file log 4 8 5 Delete Channel Deletes the channel trace from all sessions in the log 45 Logworks2_Manual_1 1 doc 4 8 6 Recalculate Math Channels Recalculates all new channel traces created with the Math trace calculator This might be necessar
23. set to and the total number of injectors Creates a fuel flow channel in lb hr or cc min total for the engine Note Specifying injectors in lb hr is actually a misleading metric Injectors flow a certain volume in a specified time Because most fuels have very similar viscosity but very different specific mass an injector rated for example for 10 lb hr will flow 10lb per hour of the test gasoline but a very different number of lbs for example for methanol 7 2 2 Density and VE Intake air density Calculates an air density channel in lb cuft US or kg m 3 Internat from intake air temperature and absolute intake air pressure MAP channels 7 2 3 Power calculations These calculations result in two channels one for torque and one for power The US version of the calculations result in a torque channel in lbft and a horsepower channel in hp The International versions result in a torque channel in Nm and a power channel in kW You can easily change the formulas to get the results in the units you want Because these calculations are based on the acceleration of the vehicle the speed of the vehicle must be known It is assumed the test runs are done in a single gear 3 gear for example Because vehicle speed is calculated from gear ratios and tire diameter the calculations will be unreliable for an automatic transmission vehicle below the converter lockup rpms They will be correct at rpm levels above converter lockup Because a vehic
24. the Y axis can be indicated as in this example W Log File XYPlot RPM LM1_02 List X axis Y axis Min Max Measured Time 29 33 sec ou Max torque 123 6 Ibft 5580 RPM eo Ir A w l Max torque 139 6 lbft 5230 RPM a ei Max power 169 8 hp 7560 RPM e Max power 164 8 hp 6620 RPM Kon Ed D E H d o 2 j L e ER RS EECH 2 o 2 Ge o go J Tx Ty A Byes S Fan 5 Ok a 2s RPM 1000 The Min Max values of the overlay channels are shown in italic font 50 Logworks2_Manual_1 1 doc 4 10 3 X Y Plots This submenu lists all open X Y Plot windows and allows you to quickly bring one to the top 4 10 4 Statistics This submenu opens a statistics window for the selected input A statistics window looks like this W Logfile Stats AFR i x Frequency of occurance 12 13 A i5 Ge Kee TC br ae 21 ee AFR Measured Time 33 75 sec Average 15 Max 22 Min 12 This window shows how often a certain input value happened during a session or partial session If nothing in the graph is selected the Statistics window represents the data of the entire session If a part of the session is selected Selection Tool only the data of the selected areas is represented The vertical axis is automatically scaled relative to the highest occurrence The horizontal axis is automatically scaled to the range of the input with the session or selection In addition the window shows how ma
25. 1 max 128 m Vertical Axis Channel Throttle DI From foo to AE Number of steps fi 3 max 128 m Chart Content Channel LM1_02 DI Cancel i If you just change the content channel the current row and column settings of the chart will stay untouched If you change either of the axis channels the settings for that axis rows or columns will change to be equally spaced with the number of steps and end values specified in this dialog box 5 3 5 Deleting rows or columns Select the rows or columns to delete then in the Edit menu select Delete Selection 56 Logworks2_Manual_1 1 doc 5 4 Colorizing a chart Select the Colors menu LM1_02 AFR Colors No Color v Color by average value Color by Std Deviation Color by Number of data points kk Max Tab Color Schemes v Rainbow Wobniar Planck Weather Min Tab Average You can color a chart by average value Standard Deviation or Number of data points You can also choose between 4 different color schemes The Colorize pane will become active as shown above By moving the Max and Min tabs you can limit the colorization to the value range you are interested in The range can be limited to as small as 10 of the total range of the channel If colorizing by Number of datapoints the scale for the colors is logarithmic Example of a colorized chart Throttle 9 REM LM1_02 AFR 4444 5556 6
26. 52 LogWorks collects up to 10 questions into a questionnaire dialog box so that only a minimum of dialog boxes pop up If more than 10 questions are asked the questions are asked with multiple sequential dialog boxes of 10 questions each 6 3 Restrictions on variable names There are certain restrictions on variable names so that the Formula Calculator can correctly distinguish between what is an operator like and a variable or constant 1 Variable names MUST start with a letter not a number or special character 2 Variable CAN ONLY contain letters and numbers no special characters with one exception 3 The underline character _ is allowed 6 4 Using LogWorks channels Suppose you don t want to enter the values manually but use data collected in a LogWorks channel You can use LogWorks channels as variables just as if you had defined them For a simple calculation with only one value as above the formula calculator chooses the value to use according to the following rules If an area in the visible window is selected get the first selected datapoint in the window from left to right Otherwise choose the first selected datapoint in the session If nothing is selected use the first leftmost datapoint in the visible window Example 4 Calculate torque and horsepower from vehicle weight acceleration channel gear ratios tire diameter and rpm Enter vehicle weight in lb m F m ACCEL ACCEL is the accelera
27. 667 7778 8889 1 5 5 User sub charts User sub charts are sub charts that contain user entered or calculated values User chart contents are saved when the log file is saved 5 5 1 Creating a user sub chart To create a new user sub chart manually In the File menu select New user chart 57 Logworks2_Manual_1 1 doc A new empty user chart with a default name will be created You can change the name of the user chart by selecting it with its tab and then in the Table menu select Change user chart name USE ONLY NUMBERS AND LETTERS IN A SUB CHART NAME THE ONLY SPECIAL CHARACTER ALLOWED IS THE UNDERLINE CHARACTER _ A SUB CHART NAME MUST START WITH A LETTER User charts can also be created by the Chart Calculator see section 6 8 5 5 2 Entering data in a user sub chart To enter data in a field in the user sub chart double click on a bin The bin becomes editable and you can enter values manually 5 6 Exchanging chart data with other programs There are several ways in which chart data can be interchanged between LogWorks and other programs 5 6 1 Saving charts Use the Save Chart menu item in the File menu The entire chart including all sub charts are saved in a dif file DIF files Data Interchange Format can be opened by many programs including Excel 5 6 2 Copying and pasting chart data To copy the chart data to the clip board select the data by click
28. 90 RPM x 1000 AFR 1 LM1_02 Session 3 Time between 1300 RPM and 8400 RPM is 27 93 sec E c Release Autobahn_log Session 3 E ol x Fie Edit Sessions Channels Tools View mA ES QQeH s i Session length 38 01 sec see 11 94 AFR 14 92 AFR 8400 RPM 1300 RPM 96 5 95 7 9946607 8 8 10 EE L ZS 1 o 102030 405060 708090 RPM x 1000 Lu o Now we are using the overlay tool to overlay session 3 over session 1 87 Logworks2_Manual_1 1 doc E C Release Autobahn log Session 1 S Oo x File Edit Sessions Channels Tools View d A 1 e Glen len Session length 37 19 sec CH 1 1 2 18 27 sec 12 57 AFR 13 30 AFR z 10 1 9 19 20 30 40 50 60 70 80 90 100 LM1_02 AFR 8 RPM x 1000 What is immediately noticeable is that the AFRs of session 3 are higher than those of session 1 in the area below 7000 RPM but lower above Let s see how that affects power and acceleration Acceleration can be determined by the slope of the RPM curve The steeper the slope the higher the acceleration and therefore power assuming other conditions like weight and wind are the same In area 1 acceleration is slightly lower in session 3 while AFRs are higher than in session 1 In area 2 both RPM slopes match Therefore the AFR change had little effect In area 3 the RPM slope of session 3 is noticeably steeper The engine made more power with the leaner AFR In area 4
29. ATMP 6 8947573 kPa gt kg cm 2 ou 98 0665 kPa gt bar ou 100 kPa gt inHga ou 3 3863887 kPa gt inHgVac ATMP ou 3 3863887 kPa gt millibar ou 10 kPa gt mb ou 10 As you can see the first half of the conversions all convert a source unit to kPa The second half of the conversions convert kPa to another target unit The following master units are used in the Conversions txt file Temperatures in degree Kelvin degK Pressures in kiloPascal kPa Acceleration in g Speed in meters per second m sec Weight mass in kilograms kg Length in meters m Volumes in liters I Power in kiloWatt kW Torque in Newton meters Nm Frequency in Hertz Hz Density in kilograms per cubic meter kg m 3 86 Logworks2_Manual_1 1 doc H Tips amp Tricks for using LogWorks The included log file example Autobahn log shows a good example of using the features of LogWorks to determine if a fueling change made a difference in power of the engine Let s look at Session 1 and Session 3 in the example Both are 3 or 4 gear pulls from low RPM to redline We look at the run from 1300 RPM to 8400 RPM Session 1 Time between 1300 RPM and 8400 RPM is 28 18 sec E c Release Autobahn log Session 1 E oj sl Fie Edit Sessions Channels Tools View M E QQeeblen Session lenath 37 19 sec 1740 2 29sec 20 56sec L 13 58 AFR 12 27 AFR 1200 RPM 8400 RPM 100 2 o 102030 405060 7080
30. LM1_02 Ioj x X axis Y axis Min Max Measured Time 6 06 sec 13 2 u N O I 2 3 12 8 In this case the Y axis is AFR and the X axis is RPM You can select any two inputs as either of the X or Y axis If nothing in the graph is selected the X Y Plot represents the data of the entire session If a part of the session is selected Selection Tool only the data of the selected areas is represented If overlays are in the selected area the overlay data points are shown as rectangles the original as crosses For example if you are only interested in the AFR over RPM curve for wide open throttle WOT you can either hand select these areas or use the Autoselect tool if you have a throttle position input connected to the LM 1 49 Logworks2_Manual_1 1 doc As shown above the individual data points are shown as small x s Clicking the button shows the data points connected with lines as in this Ml Log File XYPlot RPM LM1_02 X axis Y axis Min Max LM1_02 AFR The X and Y axis are automatically scaled to the range of input values for the respective axis Manipulating the session data with the smoothing filter changing selection or adding deleting measurement points will be automatically represented in the X Y Plot Multiple channels can be shown at the same time in the plot The Y axis menu allows selecting which channels are shown In addition the Min and Max points for each of the channels shown on
31. LogWorks 2 User Manual 1 OVE NVISW eege ee a aa a Ee a aes asa beets eg beds baeaee 6 UN Ee We len EE 6 Beie elle SNGING EE 7 2 1 Pata logging 10 EE 7 Ee DW en te 7 Poke Logging Ee e BEE 7 21 3 LOGGING OSOON EE 9 2 2 Sensors and the Modular Tuning System 0 ccccecsceeeeeeeeeeeeeeeeeeseeeeeseaeeeeaeeneneeess 10 2 3 Sensor HOOKUP sanana aaa e iaaa eege dee aa GALEN AEREA 11 2 4 The Innovate Log Chain Concept 13 2 5 Identifying devices and Channels cccccccccceeeeeeeeeneeeceeeeeaeeseneeseeeeeseaeeesnaeessaees 14 2 6 Logs and e TE 15 2 7 e ee HE 16 Using ee del EE 17 3 1 Starting p LOGWOMKS EE 17 3 2 The LogWorks Main Window sssessesssesseessesssesssrsssissrinsrissnntrnnttnnnrnnntnnnsnnntrnentnent 18 3 2 1 Changing the preferences for unitS ssseesssssisesinssrnestrnssrnstrnssnnssrnsrnssrnssrnnnnn 19 3 2 2 Manipulating the oauges 19 3 2 3 LogWorks Main File Men 22 3 2 4 LogWorks Channel Men 23 3 2 5 LogWorks Main Window Men 23 3 3 Manipulating the Channels sciiiiniiiarannennaa siaaa eaaa aiaa a aaa anA a 24 3 3 1 Configuring the Channels A 24 3 3 2 Custom Input LOOKUP Tables mirsiu reena aaa aiaia 26 3 4 Triggered Realtime Logs E 30 3 4 1 Trigger Start Condition Setup ceeeceeeceeeeeeeeeenee scene eeeeaeeeeaeeseeeeeseaeeesaeeseneeeeeas 30 3 4 2 Trigger Stop Condition Setup ececceeceeeeeeeeeneeeceneeeceae
32. Using Thermocouples Thermocouples are nothing but two wires of different materials joined together at one end The materials used determine the thermocouple type The most common is Type K When two different metals are joined a voltage is create at the junction This voltage is determined by the temperature gradient along the wires and by the metals used That s why only wires of the same materials as the two thermocouple sides should be used The voltage is very small in the microVolt range Therefore it has to be amplified Also the voltage is dependent on the temperature gradient meaning the temperature difference between the ends of the wire So the temperature of the device measuring the cold junction has to be known This is called cold junction compensation The LMA 3 has a thermocouple input and also provides the cold junction compensation Inserting different metals in between thermocouple and measuring device for example to extend the wires should be avoided The junction between the thermocouple wire and for example a copper wire would also create a voltage and change the readings That s why thermocouple wires of the right type for each side of the thermocouple must be used Sometimes it is necessary that multiple thermocouples have to be logged The following schematic uses the AD595 integrated circuit from Analog Devices This device is a single chip thermocouple amplifier with cold junction compensation The device can be
33. al MAP sensorg eee eeeeeeeeeeeneeeeeeeeeaeeeeeeaaeeeeeeaaeeeeeeaaeeeeeeeaeeeeneaas 97 10 3 1 Calibrating a 3 bar or more MAP sens 97 10 3 2 Calibrating a 1 bar MAP eensor 97 10 4 Measuring voltages higher than 5 Volt cee eeeeeeeseeeeeseaeeesaeeseaeeees 98 10 5 Using Thermocouples AAA 99 10 6 Measuring duty cycle of peak hold injectors ccecececeeeeeeeeeeeeeeeeeeeeeesaeeeeeeeeeaees 100 10 7 Making a 5 Volt supply for external sensors sssssssseesrssresrrssrrssrrssrrssrrssrrssrns 100 10 8 And finally Revision History A WEIN We TEE EE 101 5 Logworks2_Manual_1 1 doc 1 Overview LogWorks is a software application that interfaces with the Innovate Modular Tuning System products It enables easy analysis and manipulation of engine data acquired by MTS components and also allows to view engine data in real time on the on screen virtual gauges This manual describes the basics of data logging with the Innovate Modular Tuning System and how to use the LogWorks 2 0 Program In addition this manual shows how you can extend the capabilities of the MTS with some basic electronic skills 1 1 Specifications Computer requirements Operating System Computer speed RAM Hard Disk space Display Other LM 1 Firmware version required LM 1 Input Impedance LM 1 Dynamic Input Impedance Data logging rate LM 1 Max Logging time internally LM 1 Max number of sessions intern LogWork
34. and and whether to pass it on An example of a case where the command is executed but not passed on is the start stop record command The first upstream device capable of logging internally will execute the command but not pass it on As said before the first device is special because it is the synchronization source for the entire chain By plugging its IN port with the supplied terminator connector a device can detect that requirement when it powers up The terminator connector just connects the transmit and receive line of the IN port together Each device sends a special command out on it s IN port when it powers up This command is ignored and not passed on by any device if received on it s OUT port If the sending device immediately receives that command on its IN port again because the terminator is plugged in it assumes it is the first and special device in the chain The LM 1 having only one serial port is ALWAYS a special device and MUST be connected to the beginning of the chain 2 5 Identifying devices and Channels To easily identify which channel is representing which engine parameter the channels must be given aname Use short names to not use up a lot of screen real estate USE ONLY NUMBERS AND LETTERS IN A CHANNEL NAME THE ONLY SPECIAL CHARACTER ALLOWED IS THE UNDERLINE CHARACTER _ A CHANNEL NAME MUST START WITH A LETTER LogWorks allows you to configure each channel Part of the configuration is the name Also the c
35. and one ground Sometimes the ground pin is omitted and the sensor is grounded through its metallic body to the engine Typical examples are Throttle Position sensors TPS Manifold Absolute Pressure sensors MAP and Mass Air Flow Sensors MAF The output voltage has a typical range of 0 5V and varies for most sensors linearly with the measured quantity b Voltage generating sensors These sensors generate a small voltage more or less proportional to the measured quantity Typical examples are Thermocouples and Narrow Band O2 sensors Thermocouples output a very small voltage in the microvolt range that requires a special amplifier to make the signal readable and loggable The LMA 3 Auxbox has such an amplifier built in Narrow Band O2 sensors output a voltage in the milliVolt range up to 1000mV Their voltage output has a jump from low 100mV to high 700mV to 1000mV when the AFR of the exhaust gas changes from lean of stochiometric to rich of stochiometric They act more like switches than actual sensors Basically they can indicate lean rich and stochiometric c Resistive sensors These sensors change their electrical resistance with the measured quantity Very often the relationship between resistance change and the measured parameter is non linear Typical examples are Intake Air Temperature Sensors IAT coolant temperature sensors CT and some oil pressure fuel pressure sensors Typically these sensors have 2 pins One is gro
36. aner ei RN EE BEE EEN 4 5 7 Save current session only AB te EIDEN de eegent vans BID 98 ClOSC i scicisiiecerastuecanvnatacccerstetdievatoawentaviadsenas 4 6 Log Window Edit Men e We 4 6 2 Paste as Overl y eenen 4 6 3 Paste aS NEW eeselon 4 6 4 Remove Overlay cccccccecesseeeeseeesees 4 6 5 AUtOSEIECT 0 0 ceeeeeccecceeeseesseeeeeeeeeseanens 4 6 6 Search Lbranm 4 6 7 Go to next selechon cece 4 6 8 Select whole session esccnenenenenenenen 4 6 9 Delete Gelechon ceceeeeeeseeeereeeees 4 6 10 Invert Gelechon 4 6 11 Invert Selection in all sessions 4 7 Log Window Session Men 4 7 1 Show Time in Seconds onhy 4 7 2 Show Session Info 4 7 3 Delete current SESSION cccceeeeeeeee ees 4 7 4 Geseionselechon 4 8 Log Window Channel Men 4 8 1 Set Grid Onnin aiii aia 4 8 2 Show Hide Channel 4 8 3 Smooth Channel 4 8 4 Configure Channel 4 8 5 Delete Channel 4 8 6 Recalculate Math Channels 000022 4 8 7 Change fracecolorg 4 8 8 Apply default smoothing sssssseseseeeenen 4 8 9 Save current smoothing as defaullt 4 8 10 Show Mixture as AFR or Lambda 4 8 11 Set Fuel Type ssseseeeeseesseeseeeeeereesn 4 9 Log Window Tools Men 4 9 1 Tool Selections c cc ceeeeeeeeeeseeeteeeeeeees 4 9 2 Delete Meaeuremente 4 9 3 Formula CGaleulator 4 9 4 Formula Collection 4 10 Log Window View Men 4 10 1 Cascade Windows 4 10 2 New X Y Piot 4 10
37. anual_1 1 doc LMA 2 or LMA 3 12 kOhm TPS CHx CHx only on LMA 3 Ground 1000uF R 10 The low pass filter created by the 12 kOhm resistor and 1000 uF capacitor will filter out most noise coming from road surface irregularities Note for the electronically challenged You can use a capacitor with a higher voltage rating than 10V also 102 Logworks2_Manual_1 1 doc 11 Revision History 1 0 07 15 05 Initial Release 1 1 8 15 2005 General Corrections 103 Logworks2_Manual_1 1 doc
38. before handing a formula to the calculator 83 Logworks2_Manual_1 1 doc 8 How LogWorks unit conversions work To automatically convert units LogWorks uses a special library file named Conversions txt This file must be located in the same folder as the LogWorks exe file You can manually extend the number of conversions LogWorks understands by editing this file Additional conversions for many units can be found here www onlineconversion com NOTE Avoid multiple conversions back and forth A computer has a limited resolution for numbers which creates rounding effects and these rounding effects add up after a few conversions and will create inaccurate data 8 1 Conventions on unit names For LogWorks to understand a conversion certain conventions must be followed 8 1 1 Temperature conventions Temperature measurements are in degrees Celsius degrees Fahrenheit or degrees Kelvin Celsius units are named degC Fahrenheit units are named degF Kelvin units are named degK 8 1 2 Pressure conventions Pressures used in engine diagnostics are either in gauge pressure or absolute pressure Gauge pressure is typically what a boost or vacuum gauge measures It is actually the pressure difference to the current atmospheric pressure not the actual pressure itself Absolute pressure is the pressure above absolute vacuum This is what most MAP sensors measure MAP stands for Manifold Absolute Pressure not Manifold Air Pressure as a
39. channels and range though Once the chart is created you can always manipulate the spacing and number of the columns and rows of the chart 4 10 6 View Chart You can select from the last four chart settings used also up to four charts can be open at the same time LogWorks stores the chart settings in the log file when the log file is saved 53 Logworks2_Manual_1 1 doc 5 3D charts and graphs 3D charts are tables or graphs showing the dependency of a selected channel content channel in relation to two independent other channels The independent channels x and y axis are divided into variably sized sections The values of the content channel are sorted into bins dependent on the content of the x y channels The average value standard deviation number of datapoints contributing and the max and min for each bin are calculated 5 1 The 3D chart window Mi LM1_02 Chart over RPM Throttle LM1_02 AFR The Chart window can be resized to any size It is divided into different areas and has three different panes The colorizing pane 3 allows selecting the color range if colorizing is selected the chart graph pane 4 shows the values of the selected sub chart and the measurement pane 5 shows the values at the point of the cursor when the cursor is in the chart graph pane Here s a short description of the parts of the Chart Window 1 Menu area C
40. d hit the delete key If you make changes by editing click anywhere in the table to make the changes permanent You can import a new lookup table from a text file extension txt or a DIF file created by a spreadsheet program extension dif A text table must have two columns separated by spaces or tabs The first line contains in the left column the unit of the measured quantity PSI in our example The right column first line must contain the word Volt Underneath that first line listed are the individual equivalents of the lookup table Left column contains the measured quantity and the right the equivalent voltage Note The slider on the left of the window shifts the entire table voltages up or down to compensate for ground differences between the MTS device ground and the measurement sensor This should NOT be used with the LMA 3 It automatically compensates for ground differences when connecting the CHx input to the sensor s ground The following is an example of an input lookup table PSI Volt 14 7 0 1 10 0 1 2 0 2 1 5 2 8 15 4 29 4 4 9 27 Logworks2_Manual_1 1 doc A DIF file must be organized similarly The top left entry in the spreadsheet field A1 must contain the measured unit The second entry field B1 MUST contain the word Volt The rest of the A column contains the measured quantity equivalents and the rest of the B column contains the
41. d on dry air The published numbers by the manufacturers might be on the low side of actual even for an unmodified vehicle Addition of aerodynamic devices like wings splitters side skirts and so on can drastically change the cd value and frontal area The same is true for wider tires lowering and so on NOTE These calculations should be used to compare the results of modifications made to fueling and or timing and their relative effects on power and torque They are NOT intended as replacement for dyno time if the actual power and torque numbers are needed Torque power from Accel RPM This calculation uses primarily the acceleration channel from the LMA 3 and RPM to calculate torque and power It also uses the tire diameter and gear ratios to calculate speed for the aerodynamic force calculations Torque Power from speed and acceleration signal This calculation uses a speed signal input and acceleration signal from the LMA 3 to calculate torque and power 81 Logworks2_Manual_1 1 doc 7 3 LogWorks built in chart calculations These are the calculations built into LogWorks for calculating with charts Check on the Innovate Motorsports web site www nnovatemotorsports com for additional calculations as they become available 7 3 1 Fueling calculations Fuel map from measured AFR and target AFR Requires a current fuel map as input chart user sub chart and a target AFR sub chart The current fuel map values are assumed t
42. ded thermistor formula In R B1 B2 T B3 T Where R is in Ohms and T in Kelvin Start the Thermistorcalc application It will show the following dialog box 94 Logworks2_Manual_1 1 doc de Thermistorcalc x m Temperatures in Resistance in Farenheit Celsius C Ohm kOhm m Desired Temperature Range From 7 to RB 2 Farenheit m Sensor is connected on one side to Ce Ground C 5 Volt m Resistance T emperature table Resistance Temperature E kOhm Farenheit Temperatures entered EI 79 St 40 0 must differ by at least 45 Farenheit 1 at 177 0 0 06712 at 1212 0 m Load Resistor Size Load resistor used is fo 3600 kOhm Determine best Load Resistor Create Table Specify if you want enter the temperatures in Fahrenheit or Celsius Also specify if the resistances used are in kOhm or Ohm and if circuit A sensor grounded or B sensor at 5V is used NOTE Thermistorcalc works only if the circuit A or B is run from 5V Enter the desired measurement temperature range The range must be at least 50 degC or 90 degF Also enter the three measurement points from the calibration procedure as described above If you are making your own circuit you can have Thermistorcalc calculate the optimum load resistor The temperature where this circuit has its maximum sensitivity is when the resistance of the sensor and the load resistor are equal Thermistorcalc calcu
43. e and dangerous especially in cross wind situations But there is a legitimate need to measure down force in a race car Here s how it can be done with the MTS Any performance car has front and rear sway bars also called anti roll bar These are typically pieces of round spring steel sometimes hollow tubes that transfer the deflection force from the outer wheel in a corner to the inner wheel During that deflection the center of the sway bar stays pretty stationary because the bar is twisted During normal suspension deflection on both wheels on the axle the bar rotates with the suspension movement To measure down force one can use the car s suspension springs a spring scale To do that fabricate a clamp on lever that clamps to the center of the sway bar Use this lever to actuate a throttle position sensor TPS as in the following drawing Clam on lever TPS sway bar H Dimension the relationship between the clamp on lever and the TPS s lever such that the TPS goes through its movement range of about 90 degrees for the full suspension travel Then hook up the TPS sensor to 5V and measure its output voltage Load the car up with 25 Ib or 50lb sand bags over the axle and record the sensor voltage for each load to calibrate your spring scale for each axle Enter that table as custom lookup table in LogWorks voltage vs load Hook the TPS sensor to the LMA 2 or LMA 3 with the following circuit 101 Logworks2_M
44. e used To make it easier to find the correct calculations the math libraries are divided so that the number of duplicate entries is minimized 3 2 2 Manipulating the gauges LogWorks can display three different gauge types Round vertical bar and number RPM x 1000 Round gauge default vertical bar number gauge To change the size or position of a gauge click on the gauge The gauge will be shown with a selection rectangle like this A gauge selected like this can be dragged in the window to any position Grabbing the gauge with the cursor at any of the corners allows you to resize the gauge Multiple gauges can be selected by holding down the Control key Ctrl while clicking on the next gauge Changing gauge colors The different colors used in the gauge display can be manipulated with the Colors menu When either of the items like needle color is selected the following color dialog box will appear 19 Logworks2_Manual_1 1 doc Needle color x Color Brightness H 100 ES 0 Apply Click anywhere on the color circle to change the hue or saturation of the color Saturation is how intense the color is hue is the color itself red yellow green and so on Grays have a saturation of zero and are located in the center of the circle The distance from the center is a measure of the saturation The slider on the right of the window determines the brightness of the color in of the max brightness
45. ect the tool by clicking on it You can also switch between tools using a keyboard shortcut 4 2 1 Hand Tool Shortcut Ctrl H Zi Scroll the graph left and right If a channel trace is vertically magnified See magnification tools also scrolls the trace up or down To scroll click in the graph left mouse button and drag the graph left or right If a real time session is currently recording the graph will automatically scroll to show the latest data Scrolling with the hand tool or the horizontal scroll bar to an earlier time in the recording will stop the auto scrolling To restart auto scrolling scroll the graph to the rightmost end 33 Logworks2_Manual_1 1 doc 4 2 2 Overlay scroll tool Ki When an overlay is pasted onto a session this tool moves the overlay relative to the underlying graph To scroll click in the graph left mouse button and drag the overlay left or right 4 2 3 Selection Tool 1 Allows selecting a portion of a session To select a portion click in the graph left mouse button and drag the mouse left or right Whenever you click without any other keys held down the current selection is removed Holding down the shift key while clicking extends the selection from the first click to the new click Holding down the Ctrl key while clicking allows selecting multiple areas without removing the previous selection 4 2 4 Magnification Tools RA The tool is used to magnify the Q tool is used to reduce a ma
46. ed 12 Logworks2_Manual_1 1 doc 2 4 The Innovate Log Chain concept LogWorks 2 0 has the capability to log display and analyze up to 32 engine parameters Most users will use less though Each of the MTS components reads between 1 and 6 as of 6 1 05 engine parameters To interface a multitude of MTS components to LogWorks with a single connection the Innovate LogChain concept was introduced Each of the MTS components has two serial ports except the LM 1 which has only one One serial port is designated as IN port the other as OUT port The OUT port of one device is connected to the IN port of the next device and so on This way devices can be daisy chained to build a log chain for up to 32 channels total The OUT port of the last device is connected to the computer for logging or downloading of logged data The following diagram shows how to connect multiple MTS devices to form a log chain The example chain consists of a LM 1 LMA 2 a LC 1 a LMA 3 and 2 XD 1 s In this case the chain has 12 channels 6 from LM 1 1 from LC 1 and 5 from LMA 3 To Computer Devices attached to the LM 1 s analog input count as being part of the LM 1 s 6 channels They don t count extra XD 1 s do not contribute any channels so you can add as many as needed Another Example Log Chain 7 channels with 2 AFR channels To Wa Computer Terminator Plug Arnold Le 7 IC LMA AD F AE F The device that s first in the cha
47. eeeaeeseeeeeseeeesaeeeeneeeeaas 31 Working with Logs and Geseions nesr nesnnetnnesnn nenn nenn nenn nenn 32 4 1 The Log WINdOW EE 32 4 2 Log Window tele EE 33 4 2 1 Hand Tool Shortcut Ctrl H w PA EEEE A A E A deeg 33 4 2 2 Overlay scroll tool BEE 34 4 2 3 Selection Tool E REP E AEE E AE E A E 34 4 2 4 Magnification Tools OS 34 4 2 5 Measurement tool Shortcut Ctrl M D LEE E E A E 34 4 2 6 Text Note Tool EE 34 4 2 7 Real time Logging Start button Shortcut Ctrl N e EE 34 4 2 8 Stop button Shortcut Ctrl Spacebar D EE 34 4 3 Manipulating the vertical Scale Dame 35 4 4 Manipulating traces in the graph parne ssssseseeeseeiesssesriesriesrresrnssrrnnsrrnsrnnsrnssrn 35 44 7 Hide Channel secccsecccssncceias ect sccgced ensidetes sdvaydegeesvandesvatcadenceuent epvanesdsacedsneepantiadeaeeenears 35 44 2 ZOOM in CHANMS sa veesccasiescccdatissapedvd daca aavesacecensseahaavestcatebacdapaavedeasteveaslend ates apes casas 35 4 4 3 ZOOM out Channel 35 4 4 4 Smooth channel 36 4 4 5 Set Gridochanmel cece cece ceteeeeneeceeeeeeeaeeeeeaeeseeeeeseaeeesaaesseaeeseeeesesnaeeseeeeeaes 36 4 4 6 Configure channel 36 4 4 7 Delete channel 36 4 5 Log Window File Men 37 4 5 1 Record new Geseion nenn 37 2 Logworks2_Manual_1 1 doc 5 4 5 2 Record new Triggered Session 4 5 3 Stop Recording ceseceeeeceeeeeeeeseeeeeeees 454 Playback oce
48. eeeneeeceaeeesaaeeeeaeeseeeesaeeesaeeesaees 63 5 9 Calculations with Charts 0 ccccccccseeeeeeeeeeeeeceeaeeeeneeceeeeceaeeesaaeeeeeeeseaeeesaeeseaeeseneeess 64 5 10 Realtime indication in the Chart and oraph 65 5 11 Some tips on working with Charte 65 Math Trace Calculator anaana otan ia eiei a a aana 66 6 1 Ee IEN TEE 67 6 2 Asking for user date eege dee EENS ENER ee 68 6 3 Restrictions on variable names t 69 6 4 Using LogWorks channel 69 6 5 Calculating new LogWorks channel 71 6 6 Dealing With UNIS 2 cccieceev iii ccy deed NENNEN deed 73 6 7 Formula Calculator Functions 0 0ccccccceeeceeeeneeeeeaeeeeeeeecaeeesaaesseneeseeeesaeeeseneeeeaees 74 6 8 Chart Calculator deu Seege gii hv Ave te ta ote vag Maeva tive tap lanes 76 6 8 1 Pre assigned names for the standard eub chate nenene 76 6 8 2 Using the Chart CGalceulator 76 Bee Vu elt 78 7 1 Using the lee EE 78 PAS Basic USAGG naaar oa etek Guarentee 78 7 1 2 Adding a new formula to a library eeeecececeeeeeeeeeeeeeceeeeeeaeeeeaaeeseaeeesaeeesaaeeeeeees 79 7 2 LogWorks built in Trace calculations 00 0 eee eee eee ae sence ee taeeeneaeeneeeeeaes 80 7 2 1 Category Fuel Calculations sicc c scchesicevsculecestetiaeseshsndesteendege aa na a aaria aala adian 80 Teen Donsiyand WEE 80 Ten Power calculations EE 80 7 3 LogWorks built in Chart calculations esserci aiin e binek EER
49. election Del Invert Selection Invert Selection in all Sessions 4 6 1 Copy Copies a selection see Selection Tool into the LogWorks internal clipboard 4 6 2 Paste as Overlay Pastes the clipboard content on top of the current session as overlay The traces of the overlay are shown as dashed instead if solid as in the example below Using the overlay scroll tool you can move the overlay left and right If a measurement point overlaps an overlay trace the overlay measurements at this point are shown in brackets and italic The hand tool or horizontal scroll bar moves underlying graph and overlay together Overlays are not saved with a log 4 6 3 Paste as new session You can only paste a session or part of a session into an existing log from another log The input definitions of the source and destination logs have to match 40 Logworks2_Manual_1 1 doc 4 6 4 Remove Overlay Removes the overlay 4 6 5 Autoselect Autoselect is a very powerful tool to select areas of interest in a session Selecting this item brings up the following dialog box Autoselect x Channel Comparison and or Selection Term AFR gt 14 7 AND Throttle gt 60 AND MAP gt 15 Use equal lt gt not equal gt greater than lt less than gt greater or equal lt less or equal AND and OR Add to Search Library In the window of this dialog box you can specify search terms like AFR gt 14 7
50. equivalent voltages When loading the table LogWorks sorts it in ascending order by voltage LogWorks then creates a custom lookup table for all 1024 possible input values by interpolating between table points using what s called cubic splines Not the right place here to explain what they are The table must be monotone rising or falling If the difference between the second quantity and the first quantity is positive the quantities must be always rising third bigger than second and so on If the difference is negative the quantities must be always falling third smaller than second and so on If this were not the case the same voltage could mean different measured quantities Example of monotone lookup table x in PSI y in Volt 28 Logworks2_Manual_1 1 doc An example of a wrong table Note that 2 1 V could either mean 0 PSI or 15 PSI Note Different than the custom setting in Field 3 and 4 of the Input Settings dialog box the lookup table will NOT be automatically expanded to 0 5V Instead the resulting log is clipped to the minimum and maximum of the table entries Note2 If this dialog box was started from the LogWorks main window double clicking on one of the voltage fields then right clicking on it will show a menu that allows you to paste the current input voltage of this input 29 Logworks2_Manual_1 1 doc 3 4 Triggered Realtime Logs Sometimes it is con
51. ermines the number of 0 s to add to the first two digits to get the total value in Ohms 91 Logworks2_Manual_1 1 doc Color Ring1 2 Ring 3 zero s Color Ring1 2 Ring 3 zeros value value Black 0 none green 5 00 000 Brown 1 0 blue 6 000 000 Red 2 00 purple 7 0 000 000 Orange 3 000 gray 8 00 000 000 Yellow 4 0 000 white 9 000 000 000 So the ring colors Brown Black Red would signify 1 0 00 or 1000 Ohms 1 kOhm 10 1 4 Capacitors Caps Capacitors come in either polarized or unpolarized varieties Typically polarized values are used when the capacitor value is bigger than 1 uF micro Farad All capacitors have also a maximum rated voltage which can be fairly low for polarized capacitors This means that the voltage the capacitor is connected to in the circuit should be smaller than the rated voltage On a polarized capacitor the side or minus side are marked with a or a sign The side must go to the higher voltage Capacitor Symbols unpolarized polarized a ft ia as e 10 2 Intake air temperature IAT or coolant sensors CT Most IAT or CT sensors are actually NTC thermistors So are many oil temperature sensors NTC stands for negative temperature coefficient These sensors are resistance type sensors and their resistance changes such that it lowers with higher temperature The resistance curve over temperature is not linear Although there are many published re
52. f an engine in relation to RPM Typical RPM interval is every 50 RPM Although this serves its purpose time dependent dynamic effects can t be analyzed with this logging method A time based recording can be converted into an RPM based recording LogWorks has that capability but an RPM based recording can t be converted back into a time based recording 2 1 1 Definitions Channel A channel is the data from a single sensor like AFR or RPM Sample A snapshot of the engine state is called a sample A sample can contains the data of many channels but they are all measured ideally at the same time Sample Rate The sample rate is the number of samples Snapshots of engine data taken per second Channel Rate The channel rate is the number of total channel measurements taken per second It is the number of sensors measured for each sample multiplied by the sample rate 2 1 2 Logging speed The data logging speed samples per second is dependent on what data is to be logged When logging engine data 99 of the data changes no faster than about 5 times per second one state to another and back The engine state is ultimately controlled by the driver s right foot The fastest external muscle in humans is the eye lid muscle It goes through one blink cycle in about 100 milliseconds 7 Logworks2_Manual_1 1 doc A mathematician named Harry Nyquist found out in 1928 that for anything that you want to record you only need to reco
53. facturers specify the channel rate but claim it as sample rate For example if a data logging system records 30 data channels but reads each in turn only once per second the channel rate is 30 per second but the sample rate is only 1 per second This is especially problematic if the channels are not sampled at the same instance in time but at whenever it is the turn for this channel to be read The channel data when taken and interpreted as sample do not correlate anymore because each reflect the engine state at up to 1 second apart and there is no way to correlate them Many OBDII based systems log this way because of the limited speed of OBDII but some of the manufacturers claim 30 samples or more per second Higher logging speeds There are situations when higher logging speeds are needed To analyze engine data on a crank degree basis at a resolution of 1 crank degree requires measuring at 72000 times per second at 6000 RPM 6000 360 degrees 2 Nyquist 60 The applications for this are very specialized An example is to analyze the point in crank degrees where flywheel acceleration is fastest With the availability of fast and cheap microprocessors today this data can be analyzed on the fly and then the results logged for example as max acceleration point at a much lower speed of 10 15 samples per second Another application for higher logging speeds is suspension analysis There typically the shock velocity needs to be
54. for details Download LM 1 Log Creates a new LM 1 log by downloading data internally logged in the LM 1 During downloading the car may not be running engine off because the WB sensor s heater is switched off during downloads After a download completes the LM 1 is automatically restarted heater runs again Open File Log Opens a saved log for further inspection and manipulation Import Input description Extracts the input settings data from an existing log file Note that dif files do not contain the entire input description data Save Input description Saves the current input settings see Configuring the Inputs in a log file This log file will contain only the input settings no session data Trying to open it as a file log results in an error Reset LM 1 Log Resets the log memory in the LM 1 This works only in LM 1 firmware version 1 33b or later 22 Logworks2_Manual_1 1 doc 3 2 4 LogWorks Channel Menu Configure Channel gt Delete Channel D Change Trace Colors Show Mixture as Lambda v Show Mixture as AFR Set Fuel type b Configure Channel Select the channel to configure See Section 2 3 Manipulating the Channels for details Show Mixture as Lambda The Mixture data from the Wideband Controllers in the Log Chain is shown as Lambda Show Mixture as AFR The Mixture data from the Wideband Controllers in the Log Chain is shown as air fuel ratio AFR Delete Channel Deletes the
55. gnification To magnify or reduce a channel vertically click on the channel trace with the tool To magnify reduce the time scale click on the time scale with the tool Holding down the Ctrl key will select the opposite of the current tool For example if you selected the magnify Q tool it will change into the reduce Q and vice versa 4 2 5 Measurement tool Shortcut Ctrl M Use this tool to add measurement points in the graph as shown in item 10 of the window Click anywhere in the graph to add a measurement point Click in the measurement window rectangular area showing the measurement results to remove a measurement point Click and drag to fine position a measurement point Any number of measurement points can be added When holding down the Ctrl key while releasing the mouse button the measurement point is considered temporary and will be removed 4 2 6 Text Note Tool ZS Select this tool and click anywhere in the note area area 8 in the window to place a new note there Once placed a dialog box will show up that allows you to enter the text for the note To delete a note drag it outside the note area 4 2 7 Real time Logging Start button Shortcut Ctrl N e This button is only active in the real time session window Clicking this button starts a new real time session 4 2 8 Stop button Shortcut Ctrl Spacebar a Clicking this button stops recording a real time session 34 Logworks2_Manual_1 1 doc 4 3 Manipulati
56. higher numbers represent more fuel The fueling factor is calculated by dividing the actual average AFR by the target AFR If for example your EFI is set by injector timing just multiply the timing setting by the suggested number This number is a suggested value only different EFI systems will react differently 64 Logworks2_Manual_1 1 doc 5 10 Realtime indication in the chart and graph If the chart is opened for a realtime log while recording or while playing back a log the current engine state the bin it is running in is indicated in the chart table view by highlighting the appropriate bin as in this v 87 20 24 4 41 114 44 15 27 14 78 15 20 14 68 81 12 57 18 67 15 00 Mi 18 88 18 73 14 47 118 96 13 64 18 82 15 82 12 92 14 01 12 76 14 39 Or as a bouncing yellow ball in the 3D graph as in the example on the right Note In the graph view the position of the ball shows the real current values the engine is running not just the bin it is running in Do not use the realtime view of the 3D graph unless your computer is at least a 800MHz Pentium Il and has a graphics system with 3D acceleration The 3D graph updates and warps in realtime as the data becomes available The processing requirements for that are very intense 5 11 Some tips on working with charts You have to be careful when using the chart for tuning the main fue
57. ibar 0 1 measured pressure mmHg or Torr 7 5 10 4 Measuring voltages higher than 5 Volt Because the Innovate Motorsports devices are designed for the common 0 5V sensors their input range is limited to 0 5V A simple voltage divider can reduce the measured voltage by a certain ratio determined by the divider ratio which is in turn dependent on the values of the resistors used as divider Alternatively a potentiometer can be used Recommended is a 100 kOhm potentiometer The advantage of a potentiometer is that ANY ratio can be simply dialed in The following shows a simple potentiometer circuit Measured Voltage LMA 2 or LMA 3 gq CHx K 5 1V Zener A Diode Ground CHx only on LMA 3 Potentiometer 100 kOhm Typical Zener diode K A The 1 kOhm resistor 1 8 Watt or more and the Zener diode 1 10 Watt or more are for protection of the LMA 2 or LMA 3 in case the input voltage is too high and the output of the circuit exceeds 5 1V Potentiometers have typically 3 pins The middle one is the slider indicated with an arrow or pointer in the schematic The other two can be connected either way as in the schematic To calibrate connect the point Measured Voltage to the car battery and measure the voltage between the slider of the potentiometer and ground Also measure the battery voltage The divider ratio is then Ratio Battery voltage slider voltage 98 Logworks2_Manual_1 1 doc 10 5
58. in is special It determines the logging sample rate The first device in the chain sends a data packet containing its channel data a sample to the next device downstream left to right in the diagram every 81 92 milliseconds The next device appends its data to that packet and hands that packet to the next device downstream and so on At each device the packet grows in length The devices in the chain synchronize their sampling of the engine parameters to the packets so that all the channels in a packet together represent the same instance in time At the downstream end of the log chain OUT port of the last device a computer or external logger can be connected to store or display the stream data The XD 1 display is such a device This also means that the complete channel data set is ONLY available at the end of the log chain A datalogger capable of recording the log chain data stream therefore MUST be placed at the end of the log chain This includes lap top computers or other loggers 13 Logworks2_Manual_1 1 doc Commands for individual devices are sent upstream A device incl a computer or an XD 1 can send commands to the devices upstream of itself but not downstream Commands can include start stop recording calibration configuration commands and so on Only the device directly upstream of the command originator of course will receive the command This device then decides depending on the command whether to execute the comm
59. ing and dragging Then in the Edit menu select Copy Selection The chart data will be put on the computers clip board as tab delimited text which can be understood and pasted in by many programs To copy the entire current sub chart including the column and row headers select in the Edit menu the item Copy current view You can paste data from other programs into user sub charts but not into the standard sub charts The other program must be capable of putting the data as tab delimited text onto the clip board To paste the data in the user sub chart select the top left bin of the area where you want to paste the data Then in the Edit menu select Paste Data The current view in the chart graph pane must be a user sub chart 5 7 Overlaying charts You can overlay one sub chart over another so you can view both at the same time In the View menu select the sub chart from the Overlay on current view sub menu 58 Logworks2_Manual_1 1 doc To switch off overlays in the View menu select Overlay view off An overlay view looks like this 19 54 18 34 12 35 3 83 4 09 0 74 12 20 14 86 14 26 E 3 68 0 79 13 02 14 06 11 73 3 57 12 22 13 67 20 24 Kos 2 45 14 44 ke The overlayed sub chart is shown in the bins in italic and parenthesis 59 Logworks2_Manual_1 1 doc 5 8 Viewing a sub chart as 3D graph In the View me
60. ing in the middle would cause a non contiguous data area and is therefore not allowed 4 6 10 Invert Selection All areas in the session that are selected will be unselected All areas that were unselected will be selected 4 6 11 Invert Selection in all sessions Same as Invert Selection above but the process will be applied to all sessions in the log 42 Logworks2_Manual_1 1 doc 4 7 Log Window Session Menu Sessions Show Time in Seconds only Show Session Info Ctrl I Delete current Session Shift Del v Session 1 Session 2 Session 3 Session 4 Session 5 4 7 1 Show Time in Seconds only Normally the time in the time scale are is shown in minutes and seconds With this menu item the time can be shown alternatively in seconds only 4 7 2 Show Session Info Brings up this dialog box that shows information about the current session Session nto xi Session Name Session 1 Session Recorded 6 2 2005 D 10 45 24 AM m Duration 37 19 sec Comments a Session name Session length in minutes and seconds Record start time and date And a comment added to a session If the record time and date is unknown for example for a session recorded in an LM 1 the current time and date is shown You can change the time and date for a session by editing the appropriate field 43 Logworks2_Manual_1 1 doc 4 7 3 Delete current session Deletes the current session from the log If only one
61. inimize noise it is better to smooth the channel before applying the calculations As a rule smoothing of 0 25 to 1 second is enough in most cases reasonably smooth data to begin with Experiment with the right smoothing value for your application 75 Logworks2_Manual_1 1 doc 6 8 Chart Calculator The chart calculator usage is exactly the same as for the Math Trace Calculator With the following differences Channel names CANNOT be used as variables Sub chart names can be used as variables The special math functions slope and area cannot be used The MC special function stands here for Make Chart The additional variables for the MC function like unit and limits are ignored MC creates a new user chart e The t variable for time is not available e Standard sub charts can be modified Because sub chart names can be used as variables the same restrictions as for general variable names applies here too See section 5 3 Restrictions on variable names for details 6 8 1 Pre assigned names for the standard sub charts chart_avrg The average value sub chart chart_num The number of datapoints sub chart chart_stddev The standard deviation sub chart chart_min The minimum value sub chart chart_max The maximum value sub chart chart_X The horizontal value column header of the bin used chart_Y The vertical value row header of the bin used 6 8 2 Using the Chart Calculator Here are a
62. ion The voltage output of the sensor is referenced to that ground If the device measuring the sensor is connected to a different ground the voltage difference between the grounds can shift the sensor output voltage relative to the measuring device Some measuring devices like the LMA 3 have differential inputs to compensate for that offset The negative side of a differential input is NOT a ground It is intended to be connected to the same ground as the sensor A measuring device with a differential input measures the difference between its own ground and the sensor s ground on the negative input and subtracts the difference from the measured voltage on the positive input to compensate for the ground offsets The hookup from a differential input requries two wires One for the signal itself and one for the ground reference The ground reference input typically named CHx goes to the grounding point of the sensor Ground offsets are especially problematic for resistive and voltage output sensors They are not so important for frequency or duty cycle based sensors For a measuring device with common ground like the LMA 2 it is best to ground all sensors at the same point where the measuring device itself is grounded Ground offsets can also affect frequency or duty cycle based sensors Typically when measuring a frequency the signal is measured as high or low depending on the measurement device s high low threshold In the LMA 2 or
63. is will now create a channel with bounds of minimum 0 hp and maximum 500 hp This eliminates for example negative hp values created during braking If you want to set the minimum bound only just leave out the maximum as in this MC power hp 0 trq RPM 5252 RPM is the RPM channel If you want to set the maximum bound only just leave out the minimum but use 2 semicolons as in this MC power hp 500 trq RPM 5252 RPM is the RPM channel Note LogWorks stores the data in 10 bit words This means that the results are stored with a resolution of about 0 1 Therefore calculated channels should not be used in further calculations Calculate one channel at a time For example MC trq 1bft F r gear_ratio finaldrive MC power hp trq RPM 5252 RPM is the RPM channel Would work but can create wrong results because trq is stored with 10 bit resolution and then used in the hp calculation Instead recalculate or assign the torque channel as in this trq F r gear_ratio finaldrive MC torque 1bft trq MC power hp trq RPM 5252 RPM is the RPM channel 72 Logworks2_Manual_1 1 doc 6 6 Dealing with units Sometimes a channel used for a calculation is in a different unit as required for the calculation For example if the user set ft sec 2 as acceleration metric but the calculation requires g s You can force an automatic unit conversion by using the unit converter operator Example 6
64. ized to the average size Adding and Editing gauges You can add as many gauges as you have logging channels To add a new gauge or change an existing gauge select Add new dial or Edit dial in the dials menu The following dialog box allows you to change the gauge type and the associated channel You can also specify if the gauge has a mark or a redline area at a specific scale location Dial setup x Style xX Showing Channel LM1_02 e m Marks and Redline area C NoMak Makat Redline from 14 7 AFR Cancel i Note Double clicking on a gauge also brings up this dialog box 21 Logworks2_Manual_1 1 doc 3 2 3 LogWorks Main File Menu File Gonnece Gtr v Auto connect on start Hew Realtime Log Cl Hew Triggered Realtime Log Log Trigger Setup Download LM 1 Log Ctrl D Open File Log Ctrl 0 Import Input description Save Input description Reset LM 1Log Exit Connect Allows the connection of Log Chain on the serial port if LogWorks was started without connecting Auto connect on start Allows auto connecting at LogWorks start to be switched off or on New Real time Log Starts a new real time log or brings the real time log window to the front if it is already open New Triggered Realtime Log Starts a Triggered Log See section 2 4 Triggered Realtime Logs for details Log Trigger Setup See Section 2 4 Triggered Realtime Logs
65. know the value of the load resistor You can t measure it directly with the multimeter though because it would interfere with the ECU and can possibly damage it The method to use goes as follows 93 Logworks2_Manual_1 1 doc Schematic case A 1 Disconnect the sensor from the ECU and measure the voltage between ground and the sensor pin at the ECU measurement point MP 2 Switch the multimeter to current measurement and measure the current in mA between MP and ground Schematic case B 1 Disconnect the sensor from the ECU and measure the voltage between the two sensor connection pins of the ECU 2 Switch the multimeter to current measurement and measure the current in mA between the two sensor connection pins of the ECU The load resistance in kOhm is the measured voltage divided by the measured current in mA If you use a LMA 2 or LMA 3 you have to provide your own load resistor In case of the LMA 2 you also have to provide a 5V supply Connect the load resistor and sensor as follows LMA 2 or LMA 3 5V Load Resistor Sensor Che CHx only on LMA 3 Ground If you are using the LMA 2 or LMA 3 to tap into an existing IAT sensor hooked up to an ECU omit the load resistor in the schematic above but instead rely on the load resistor built into the ECU measured as described earlier 10 2 3 Using the Thermistorcalc program The Thermistorcalc program creates a thermistor curve by solving the exten
66. l map of your EFI system The chart reflects what s in the log including transition points and so on So acceleration enrichment and possible warm up enrichment are reflected in the averages as well The best way to create a chart is to create an as long log as possible with steady load points This way the effects of transitions are minimized The fewer data points are represented the less reliable the data This is reflected as well in the standard deviation Acceleration runs in low gears are not ideal for calculating the load points The same problem as in inertial dynos exists The acceleration enrichment might still be active and reliable load point data can t be extracted from only a few data points 65 Logworks2_Manual_1 1 doc 6 Math Trace Calculator Math Trace x Channel Enter formulas here Result Wehicle weight in lb m 3000 Tire diameter in inch td 25 Gear ratio of run gear_ratio 1 21 Final drive ratio finaldrive 4 53 A Name of RPM channel rpm RPM Frontal area of vehicle sqft Ar 19 83 Drag coefficient Cd 0 32 Current atmospheric pressure inHg atmp 29 92 Current temperature degF temp 94 SAE correction factor SAEcf 1 18 29 235 atmp sqrt temp 459 67 536 67 0 18 H Print formula Print results Saye Changes In the left window pane of the calculator you enter your calculations The right side pane shows the results incl
67. lates the sensor resistance at the mid point of the specified range and outputs the closest standard resistor value to that NOTE Do not make the load resistor smaller than about 1 5 of the thermistor resistance at room temperature Once all fields are filled out click on the Create Table button Thermistorcalc will generate a lookup table that can be loaded into LogWorks for a custom input setup See chapter 3 3 for details The file that Thermistorcalc generates is named 95 Logworks2_Manual_1 1 doc Thermistor txt And is located in the same folder as the Thermistorcalc application For a typical install of the Innovate Motorsports software this folder is C Program Files Innovate 96 Logworks2_Manual_1 1 doc 10 3 Using external MAP sensors Many people use GM or other brand MAP sensors These sensors output a linear 0 5V voltage when supplied by 5V Typically these sensors have 3 pins One is 5V supply one is output and one is ground The sensors come in different ranges Very typical are 1 bar for normally aspirated engines and 3 bar for boosted applications 10 3 1 Calibrating a 3 bar or more MAP sensor Use a good tire pressure gauge to measure the air pressure in your spare tire Remember tire pressure gauges use gauge pressure Lower the pressure in the tire to about 29 PSI 3 013 bar or 3 072 kg cm 2 Connect the tire valve to the sensor s input port and note the output voltage Also n
68. lations specially those involving calculating slopes Smoothing should NOT be used to get rid of excessive noise in a channel for example spikes caused by ignition misses Because smoothing is an averaging operation the lean spikes caused by ign misses would be included in the AFR values and would bias them towards leaner values 4 4 5 Set Grid to channel Can be used to set the graph pane grid to the selected channel without moving the vertical scale next to the graph 4 4 6 Configure channel Brings up the channel configuration dialog box as described in Section 3 3 Configuring the channels Input configuration changes performed in the real time log window also apply to the LogWorks main window and vice versa The same is true for the LM 1 log window File log input changes only affect the current file log 4 4 7 Delete channel Deletes the channel trace from all sessions in the log 36 Logworks2_Manual_1 1 doc 4 5 Log Window File Menu File Record new Session Record new Triggered Session Stop Recording Playback Save Save As Save current session only Print Close Ctrl 5 Ctrl P 4 5 1 Record new Session Starts a real time session Same as Real time Session Start button 4 5 2 Record new Triggered Session Starts waiting for a trigger to start a new triggered session To stop while waiting for a trigger select Stop Recording 4 5 3 Stop Recording Stops the current recording se
69. le does not accelerate any more at top speed for calculations based solely on acceleration alone the torque and therefore horsepower would be zero there That s of course not the case The calculations therefore also require to put in the frontal area and Cd value of the car to calculate aerodynamic resistance 80 Logworks2_Manual_1 1 doc force As this force is speed dependent and acts against the acceleration force it must be accounted for The frontal area and Cd value for many cars can be found here http www mayfco com tbls htm The resulting values are corrected for different meteorological conditions as well as using standard SAE correction To use the power calculations correctly use the selection tool to select ONLY the areas of full throttle at the correct gear The results should not be relied upon in the areas at the edges of the selected areas Rounding of the signal by smoothing will effect the calculated results at about 1 second from the edges if a smooth value of 1 second is used Smoothing is required for calculations involving slopes because slope calculations will vastly exaggerate any noise or digitizing artifacts in the signal These artifacts show up as oscillations on top of the calculated channel The required data to be entered must be as accurate as possible The vehicle weight entered is the weight as tested incl fuel liquids and driver not the dry weight The aerodynamic force calculations are base
70. lot of people think The fueling or AFR value of an engine is a measure of the ratio of the mass of air entering the engine divided by the mass of fuel The mass of fuel being a liquid changes little with pressure or temperature Air being a gas changes dramatically Doubling the absolute pressure with no change in temperature will double the mass of air entering and therefore would also require double the fuel for the same AFR The air mass is dependent on ABSOLUTE pressure in the manifold not gauge pressure and is also dependent on temperature Pressures are mainly measured in PSI US pounds per square inch or kPa international kilo Pascal The kPa value is by convention an absolute pressure value 84 Logworks2_Manual_1 1 doc To distinguish between gauge pressure and absolute pressure it is common to add a g at the end of a gauge pressure unit and an a at the end of an absolute pressure unit If the a is omitted absolute pressure is assumed Sometimes also a vacc is added instead of a g to denote a vacuum measurement This is typically used for carburetor tuning and is done in the US as inches of vacuum This is a gauge pressure unit and indicates again the pressure difference to atmospheric pressure InHgVacc is a typical unit for vacuum measure It means how high in inches the given vacuum could suck up a column of mercury chem sign Hg In reality the mercury is not sucked up but pushed up by a
71. luding the measurement grid and scales is projected onto the chart graph pane as if it were photographed by a camera When changing the camera view the grids are always positioned such that they are behind the surface or mesh as seen from the camera position The scales are also moved to the edge of the grid that projects with the longest line on the pane so that the scale numbers overlap as little as possible You can manipulate the camera position and zoom with the following user actions a Camera view angle Click on the graph with the left mouse button and move the mouse Moving the mouse left and right rotates the camera around the graph left or right but leaves the focal point where the camera is pointed to the same Moving the mouse up and down rotates the camera vertically around the focal point b Camera pan Hold down the Cirl button while clicking and dragging the mouse This moves the camera focal point and effectively moves the graph in the window c Camera zoom Click on the graph with the right mouse button and move the mouse up and down Moving the mouse up zooms in closer moving the mouse down zooms away When the mouse is moved without a mouse button pressed over the graph LogWorks effectively shoots a ray into the picture like shooting a gun from the camera position If that ray hits the graph the closest bin point is calculated and the values of all the sub charts at that position are shown in the measurement
72. ncludes plug ins for LM 1 LC 1 and LMA 2 Conversions txt text file containing formulas for unit conversions See section x MathlibSI txt text file containing mathematical formulas in international units MKS system for channel calculations e MathlibUS txt text file containing mathematical formulas in US units pounds degF and so on for channel calculations ChartMathlib txt text file containing mathematical formulas for 3D chart calculations g Searchlib txt text file containing formulas for frequently used searches oo 16 Logworks2_Manual_1 1 doc 3 Using LogWorks 3 1 Starting up LogWorks Connect OUT port of the last device in the Log Chain to a free serial port on your computer and start the LogWorks program If an LM 1 is used the LM 1 can either be currently operating in the car or can be connected running from its internal battery to the computer Real time logging can of course only be done when running the Log Chain can be as small as just an LM 1 in the car The following dialog box will appear Connect to LM 1 x Select COM Port com 1 E Don t connect dii D Connect on this port in the future Quit Do not show this window again Select the serial port COM Port to which the Log Chain is connected Then press the Connect button To quit here and don t start LogWorks press the Quit button If you do not wish to connect to the chain or don t have it connected Press the Don
73. ng the vertical scale pane If a channel trace is vertically magnified you can scroll that trace up or down by clicking and dragging on the scale for that trace Right click on a vertical scale for a trace and the following menu will show up Move LM1_O2 scale to graph Move LM1_O2 scale right Move LM1_O2 scale left Hide LM1_02 With this menu you can hide a trace and manipulate the order of the channel scales in the vertical scale pane The grid in the graph pane is adjusted to the scale that is next to the graph pane 4 4 Manipulating traces in the graph pane Right click on a trace in the graph pane and the following menu will show up 4 4 1 Hide Channel Hides the channel trace and its associated vertical scale The measurement pane will still show the values of the hidden channel though 4 4 2 Zoom in Channel Increases the vertical magnification of the channel 4 4 3 Zoom out Channel Decreases the vertical magnification of a channel 35 Logworks2_Manual_1 1 doc 4 4 4 Smooth channel When selected the following dialog box will appear This allows you to smooth a channel The smoothing slider allows smoothing a trace by replacing each data point with the running average of its neighbors and itself The position of the slider determines how many of the neighbors are included in the running average 0 to 32 neighbors on each side Smoothing can be used to better see trends and is necessary for some calcu
74. nnection of accessory devices For example the LM 1 allows to select LMA 3 and LMA 2 or home made connections Select the appropriate device as accessory Note LogWorks will maintain the channel configuration for each device even if the device has been moved to a different position in the LogChain This is NOT true for display devices like the XD 1 The XD 1 is sensitive to the position of it s programmed input in the LogChain This means that if you moved for example an LMA 3 from the first position in the LogChain to the second position and have the XD 1 programmed to display or use hold or waring an XD 1 channel you need to reprogram the XD 1 3 3 2 Custom Input Lookup Tables Many sensors used in cars have a non linear response curve This means that their output voltage does not follow the measured quantity linearly but with some sensor dependent curve LogWorks allows you to enter points of that sensor curve as many as 1024 the more the better to convert the sensor output voltage back into the measured quantity directly LogWorks interpolates the sensor measurements between entered points Press the Load Edit Table button in field 7 and you will be presented with the following dialog box 26 Logworks2_Manual_1 1 doc E input Lookup Table x Shift T able Volt om Load New Cancel Double click on any field in the table to modify it Click on a field to select it To delete an entry select it an
75. nt in the other direction The exception are Zener diodes They work like regular diodes but in the reverse direction they will pass current only when the voltage is bigger or equal to the Zener voltage This has the effect of limiting the voltage over the Zener diode to the zener voltage On a typical diode the Cathode is marked with a ring as in this picture Diode Symbol Diode ET em K A K A 10 1 2 IC s Typical IC s are either surface mount or through hole Through hole ICs are easiest to use A typical picture of a 16 pin and 14 pin through hole IC DIP are shown below Mark Mark a 1 141 16 2 CW 15 3 12 3 14 4 U 4 13 5 10 5 12 9 6 11 7 3 10 8 3 Pin Number counting starts to the left of the mark and proceeds counter clock wise around the chip 10 1 3 Resistors Resistors come in many different values and also different tolerance grades and maximum wattage Typical tolerance grades are 10 5 and 1 with 5 being the most common Wattage ratings are 1W or bigger 1 2W 1 4W 1 8W and so on The minimum required wattage rating can be calculated with V R Where V is the max voltage the resistor will see and R is the resistance in Ohms The resistance value and tolerance grade on a typical resistor is marked as colored rings typically 4 The first ring being close to one of the connection leads The first two rings determine the first two digits of the resistance value The third ring det
76. nu select View as graph The 3D chart window changes to look like this E LM1_02 Chart over RPM Throttle File Edit Sessions Table View Graphic Colors Average Std Dev Number pts Max Or if colorizing is switched on like this E LM1_02 Chart over RPM Throttle File Edit Sessions Table View Graphic Colors Average Std Dev Number pts Max LM1_02 AFR 60 Logworks2_Manual_1 1 doc The 3D surface represents the content data of the currently selected sub chart The x and y axis are the independent channels the content channel is the z axis The grid lines represent the spacing of the columns and rows But the scales are equally spaced for easier readability The graph view can be selected to be either surface mesh or both see Graphic menu A mesh view looks like this In a mesh view neighboring data points in the table are connected by black lines But only neighbors above below or left right are connected not diagonal neighbors A surface only view colorized looks like this without and with mesh 10 D The surface is constructed according to the following rules If a datapoint has 2 or more neighbors incl diagonal a triangle is drawn on the surface Otherwise the datapoint is shown as 3D cross 61 Logworks2_Manual_1 1 doc 5 8 1 Manipulating the graph view The graph is basically a 3D surface representing the dependency of the content channel from the x and y channels The 3D surface inc
77. ny data points time are represented the average of the selected data and the minimum and maximum points in the selected data range or entire session Manipulating the session data with the smoothing filter changing selection or adding deleting measurement points will be automatically represented in the statistics 51 Logworks2_Manual_1 1 doc 4 10 5 New Chart With this item a new 3D chart can be specified A 3D chart is a table or graph that shows the contents of a channel as dependent on two other channels as in this example E LM1_02 Chart over RPM Throttle File Edit Sessions Table View Graphic Colors 14 06 11 73 20 24 This example shows average AFR over throttle position and RPM The fuel map or ignition map of an electronic fuel injection system is a typical example for such a map For further details see chapter 4 3D charts and graphs When this menu item is selected the following dialog box will show up 52 Logworks2_Manual_1 1 doc Chart Settings Horizontal Axis Channel RPM DI From jo to 10000 RPM Number of steps 11 max 128 Vertical Axis Channel Throttle DI From oo to f120 0 Number of steps 13 max 128 r Chart Content Channel ui 07 DI Cancel i This allows you to select the x and y channels the content channel and the range and number of steps for the initial chart settings Don t fret on the number of
78. o increase linearly with injector timing where 0 means no injection injector cut off 7 4 Library file format If you feel the need to edit the libraries directly with a text editor this section shows the file format All libraries have the same basic format Irrespective if it is a chart library trace library or search library The library managers use special comments in the formulas to identify individual formula entries These special library comments use a double comment marker at the beginning of a text line followed by the text 7 4 1 Name comment Format Nformulaname The comment starts with N followed immediately by the name of the formula This is a required comment The Library managers identify formulas as the text between formula name comments This means a formula entry starts with the formula name and ends at the beginning of the next formula name or the end of the text file 7 4 2 Category comment Format Cformulacategory This comment is optional and if used follows the Name comment The comment starts with C followed immediately by the category used for the formula 82 Logworks2_Manual_1 1 doc 7 4 3 Description comment Format Multiple lines of comment text This comment is optional and if used follows the category comment If no category comment is used it follows the name comment The library manager strips out any text between the and description markers
79. olor in which the channel is displayed is programmable in LogWorks as well To further easily identify the channels each MTS device MUST be given a name This name can be up to 8 characters long and is programmed into the device Use the LM Programmer application to change the name of a device This is especially important when multiple devices of the same type are used When LogWorks start up it will identify the devices in the LogChain If new devices have been added or devices removed LogWorks will automatically change its channel configuration to reflect the new log chain configuration Channels associated with a device previously will stay associated with that device even if the device has been moved to a different location in the chain provided it has been given a unique name For details on channel configuration see chapter 3 3 14 Logworks2_Manual_1 1 doc 2 6 Logs and Sessions Different to other data logging products LogWorks organizes the acquired data in logs and sessions A session is a contiguous data set This means there is no interruption in the data stream and all data points are spaced equally in time 81 92ms apart Each time you start logging a new session is created and the session ends when the logging stream is stopped A log is a collection of sessions In a typical qualifying race or tuning session multiple runs are made and each run is data logged LogWorks conveniently organizes these runs into a common log
80. ontains the Chart menus 2 Chart Selection Tabs Allows switching between displaying the sub charts Just click on the tab The standard sub charts that are always generated are a Average average value for the bin b Standard Deviation statistical standard deviation for the bin A bin where the standard deviation can t be calculated Number of datapoints less than 2 will be shown as c Number pts Number of datapoints in that bin d Max the maximum value of all datapoints in the bin e Min the minimum value of all datapoints in the bin 54 Logworks2_Manual_1 1 doc In addition the example window shows two user sub charts fuel_map and target_afr More on that later 3 Colorizing pane Allows colorizing the chart according to different values See 5 4 Colorizing charts and graphs for details 4 Chart Graph pane Shows the values of the bins of the selected sub chart 5 Measurement pane Shows the values of all sub charts of the bin over which the cursor currently is Resize the measurement pane by grabbing its left border 6 Chart bins 5 2 Selecting data to base the chart on In the Sessions menu you can select which sessions the chart is calculated from You can also specify to base the chart on only the selected areas in the sessions For details about selections see section 4 9 Selection Tool 5 3 Manipulating the chart settings 5 3 1 Adding a column or row To add another row or column in the chart
81. ote the current atmospheric pressure in inHg or millibar Next measure the sensor output at normal atmospheric pressure For LogWorks the two points needed to set up a MAP channel absolute pressure calculate the absolute pressures as follows For PSla PSla atmospheric pressure in inHg 0 491 measured pressure in PSI For kPa kPa atmospheric pressure in millibar 0 1 measured pressure in bar 100 or kPa atmospheric pressure in millibar 0 1 measured pressure in kg cm 2 98 07 10 3 2 Calibrating a 1 bar MAP sensor Calibrating a 1 bar sensor is a little more difficult than calibrating a 3 bar sensor because a convenient vacuum source is usually not available to the average user If you have or can borrow a good vacuum gauge it is easy Connect the vacuum gauge with a T connection to the manifold of the engine Connect the MAP sensor also to this T Run the engine at idle and note the vacuum and voltage Then switch the engine off The MAP sensor will measure atmospheric pressure Note the current atmospheric pressure in inHg or millibar Vacuum gauges typically measure gauge pressure in inHg or mmHg or Torr For LogWorks the two points needed to set up a MAP channel absolute pressure calculate the absolute pressures as follows For PSla PSla atmospheric pressure in inHg 0 491 measured pressure inHg 0 491 For kPa 97 Logworks2_Manual_1 1 doc kPa atmospheric pressure in mill
82. out after the measurement To get the 0 degC resistance fill a small plastic container with a mixture of ice cubes and water Stick the sensor in the middle and hook it up to the multimeter to measure the resistance Wait until the resistance has stabilized indicating the sensor is at the same temperature 0 degC as the water Next put the sensor in a pot of boiling water and repeat the measurement again waiting for the temperature and resistance to stabilize 10 2 2 Thermistor circuit Most ECU s and also the Innovate MTS products do not measure resistance directly but measure a voltage To convert the resistance of the sensor into a voltage requires a 5V power supply and a load resistor The typical circuit for this looks like any of the following schematics ECU ECU Sensor 5V T Load MP Resistor Ground Ground one wire sensor A Sensor Grounded B Sensor at 5V In case A the sensor is grounded on one side This is the most common case where the sensor body is in physical contact to the engine and is grounded through its body Very often these sensors have only one pin To find out which circuit your ECU uses measure the voltage between each of the two sensor pins if it has two and ground If one voltage is zero and the other is some voltage between 2 and 5V when the sensor is cold you have circuit A If one voltage is 5V while the other is lower you have circuit B To get the voltage curve you also need to
83. ping a log on short glitches and spikes In the post record field you can specify also a time up to 300 seconds for which LogWorks will continue to record after the stop condition happened 31 Logworks2_Manual_1 1 doc 4 Working with Logs and Sessions 4 1 The Log Window E C Release Autobahn log Session 1 oj xj Fie Edit Sessions Channels Tools View D Eu d I QQ0 eE e i o 2 Session length 37 19 sec 140 1 o 102030 405060708090 RPM x 1000 EI K a N O ll The Log window can be resized to any size It is divided into different areas and has three different panes The scale pane 3 shows the vertical scale the graph pane 6 shows the time traces for the channels and the measurement pane 5 shows the values at the cursor position if the cursor is in the graph pane Here s a short description of the parts of the Log Window 1 Menu area Contains the Log menus 2 Tool area Allows selecting the various tools and functions to manipulate the log 3 Vertical scale Pane Shows the vertical scale of the graph for the various channels 4 Pane Dividers Mullions Grab the pane dividers with the cursor to resize the panes 5 Measurement pane Shows the current values of channels under the cursor if the cursor is moved in the graph pane Moving the cursor over a text note icon shows the content of the text note in the pane 32 Logworks2_Manual_1 1 doc If an o
84. ple variables used for a built in function are separated by semicolons not commas as is usual for most programming languages Example avrg a b c calculates the average of the variable a b and c The reason is that in some languages German for example a comma is used instead of the decimal point as is usual in English speaking countries Using a semicolon allows stored calculations to be used in either case without re writing For every formula used the math calculator converts numbers with decimals into the respectively used format before doing a calculation So in English speaking countries commas in the text will be converted into colons or in countries that use decimal commas colons are replaced by commas Calculation formulas can so be interchanged internationally You can also change the formula so the user is asked for the car weight To ask the user a question you put a question mark at the beginning of the line followed by a space Then type in the question followed by an equal sign and then the name of the calculation variable you want to assign the answer to 67 Logworks2_Manual_1 1 doc 6 2 Asking for user data Example 2 Calculate Force in Ib force from car mass Ib and acceleration in g Enter vehicle weight in lb m Enter acceleration in g a F m a When you press the calculate button here a dialog box will pop up that allows the user to enter the values for his application If you want to
85. q RPM 5252 RPM is the RPM channel MC indicates that a new channel is to be created Make Channel The first word after the parenthesis power in the example is the name of the new channel The second word separated from the first by a semicolon is the unit assigned to the channel The format of the MC command is MC channel_name channel_unit minimum_bound maximum_bound The channel unit minimum bound and maximum_bound are optional See below LogWorks channels also have bounds The bounds are there to limit what is shown on the main session window to the interesting region Input channels are naturally bounded by the input capability of the LM 1 LMA 3 or other data collection devices typically 0 5V Calculated channels have no such natural limits When no bounds are specified the MC command calculates the minimum and maximum of the bounds automatically by looking at the minimum and maximum of the calculated trace in all sessions This can lead to too large a range because calculations are always performed on all sessions in a log To limit the min and max bounds select the areas in each session you are interested in calculating When areas are selected the formula calculator will only use the selected areas for the bounds calculations You can also set fixed bounds by adding the bounds to the MC command like this 71 Logworks2_Manual_1 1 doc MC power hp 0 500 trq RPM 5252 RPM is the RPM channel Th
86. r the conversion the name ou stands for original unit A typical example for is the conversion formula for converting PSla to kPa PSla gt kPa ou 6 8947573 This means to LogWorks To convert PSla to kPa multiply the original unit PSla by 6 8947573 Another pre programmed variable name used by the unit calculator is ATMP ATMP stands for atmospheric pressure Internally LogWorks stores the current atmospheric pressure in kPa When you enter the current atmospheric pressure LogWorks decides what unit inHg or millibar was used by looking at the number If the number is above 100 it s in millibar otherwise its inHg It then converts that number to kPa for internal storage Initially when LogWorks starts up the value of ATMP is 0 As air breathing internal combustion engines are 85 Logworks2_Manual_1 1 doc rarely used in space LogWorks knows to ask when the current ATMP is required but its current value is equivalent to the air pressure in intergalactic space zero Here s the complete pressure unit family as stored in the Conversions txt file PSI gt kPa ou 6 8947573 PSIa gt kPa ou 6 8947573 PSIg gt kPa ou 6 8947573 ATMP kg cm 2 gt kPa ou 98 0665 bar gt kPa ou 100 inHga gt kPa ou 3 3863887 inHgVac gt kPa ATMP ou 3 3863887 millibar gt kPa ou 0 1 mb gt kPa ou 0 1 kPa gt PSI ou 6 8947573 kPa gt PSIa ou 6 8947573 kPa gt PSIg ou
87. rd at twice the maximum frequency contained in the recorded signal So for the human eye lid the required minimum logging speed is 20 times second The human foot controlling a gas pedal is much slower Remember the frequency is not measured from idle to WOT but from idle to WOT and back The second parameter determining the logging speed is the statistical nature of the combustion process itself No two combustion events in an engine are identical Therefore to get meaningful data multiple combustion events must be averaged to see the overall effects If each combustion event is analyzed and recorded meaningful tuning data can t be seen in most cases At 6000 RPM an engine goes through 50 engine cycles per second a 4 stroke engine cycle requires two rotations per cycle At a logging speed of 12 5 samples per second this would mean that the resulting data is the average of 4 engine cycles The above means that data logging engine data needs to be done at 10 15 samples per second Anything more creates only more data points which do not contain any additional information but are harder to analyze The Innovate Modular Tuning System samples engine data at 12 2 samples second NOTE This sample rate is the rate for a sample containing multiple sensor data each sampled at the same time instance NOT the total channel rate When evaluating data logging products be very aware of the difference between channel rate and sample rate Many manu
88. realtime channel Set Fuel Type This menu item is only important when the mixture data is shown as air fuel ratio You can select the fuel type independent of what the Wideband Controller settings are Normally LogWorks uses the device settings of the first Wideband controller in the Log Chain to calculate the air fuel ratio settings 3 2 5 LogWorks Main Window Menu Use this menu to quickly switch between open logs 23 Logworks2_Manual_1 1 doc 3 3 Manipulating the Channels 3 3 1 Configuring the Channels The Configure Menu of the main window allows configuring the LM 1 inputs The AFR Lambda input can t be configured You can only switch it between displaying Lambda or AFR To configure an input select the appropriate input from the Configure menu or double click on the appropriate instrument The following dialog box appears x Lid Input Name Dun och 1 m Input Type LM 1 Air Fuel Ratio Meter Input Mode Gi LM 1 Input 3 Duty Cycle DWELL X Input Range A Positive z CCessory LMA 3 AuxBox lo Input Interpretation Unit of measurement G GI o o nS equivalent to 0 00 x H q Volt and UO Z equivalent to 5 00 Volt Expand to 0 5 Gi Invert Scale Limit to programmed range Custom Lookup T able Delete Table T Cancel oe This dialog box contains up to 11 fields Field 1 In field one you can specify a name for the input for easy identification The left side of
89. s limits Max Session Size Max Number of sessions per log Max Number of logs open Windows 98 or later 500MHz Pentium 1 or faster Min 48 Mbyte Min 100 Mbyte free space Thousands of colors 800 x 600 Min 1 free serial port or USB to serial adapter 1 1 1 33b or later recommended gt 1 MOhm 0 5 to 5 5V input range lt 10 kOhm lt 0 5V or gt 5 5V input range Low pass filter 10 kOhm 4700 pF 12 21 times second for all inputs concurrently Equivalent to 81 92 msec per data set 44 minutes 1024 1 hr 45 minutes 1024 32 open concurrently 6 Logworks2_Manual_1 1 doc 2 Logging engine data 2 1 Data logging 101 Data logging is basically the recording of engine data Engine data is measured with various sensors Two types of logging are common a Time based logging b RPM based logging In time based logging the sensor data is read in fixed time intervals This is similar to how a movie projector or a TV works In a movie a snapshot of the camera scene is taken 24 times per second Because of the limited speed of the human eye these snapshots when viewed at the same sample rate of 24 snapshots per second seem like continuous motion to the human eye Time based data logging works the same way A snapshot of the engine state is recorded at fixed time intervals RPM based logging is mainly used in conjunction with chassis or engine dynamometers Their purpose is to measure power and torque curves o
90. s simple circuit will create a stable 5V supply from a 7 30 Volt source Max current should be about 300mA without heat sink on the regulator 800 900mA with heat sink LM7805 top view GND 7 30V a Oo OUT A LM340 can be used instead of an LM7805 as well The 10uF capacitor is optional reduces noise 100 Logworks2_Manual_1 1 doc 10 8 And finally a weird one Very often one can see small front wheel drive cars on the road with huge wings mounted on the trunk lid But there s no corresponding aerodynamic down force device in the front Of course in the majority of cases the wing is there for the cool factor because many race cars have wings birds do too but birds also have no penis In a race car the wing creates aerodynamic down force The down force allows to increase cornering speed because more force is put vertically on the tires without increasing the mass of the car which would create more side force proportionally The aerodynamic forces created by wings and under car aerodynamics can be very large For example in a Formula 1 car at speed the down force is twice the car s weight car could drive upside down on the underside of a road and would still stick with a force equal to its own weight In the above case one can only hope that these people never drive their car at speed The down force of that wing extending past the end of the car will lift the front of the car up and make it unstabl
91. s then called Chart Calculator To call up the chart calculator select in the Table menu the item Chart Calculator See section 6 Math Trace Calculator and section 6 8 Chart Calculator for details on how to use the calculators Calculation results can be stored in a user chart If a user chart is created with the Chart calculator it can be recalculated for example if it s source data changed by selecting Recalculate Math Charts in the Table menu Frequently used chart calculations can be stored in a chart calculator library The library is a text file named ChartMathlib txt The library can be called up by selecting Chart Calculator Library in the Table menu Details on how to use the Math libraries can be found in section 7 LogWorks Libraries A simple very often used calculation is built into the charts function without using the calculator When viewing one of the standard sub charts double click on a bin The following dialog box will show up x Values at RPM 5500 6500 RPM and Throttle 95 105 AFR Average 12 4 AFR Std Deviation 0 1 AFR Min Value 12 2 AFR Max Value 12 8 AFR Number datapoints 43 Target AFR fi 24 Change fueling by factor 1 000 Calculate d This shows the current values of the clicked field The target AFR or Lambda calculation functions are only available if the field content is AFR or Lambda The fueling change calculation is based on fuel flow control where
92. sistance curves for commonly available IAT or CT sensors these tables typically show only the nominal values Actual production sensors can vary by as much as 10 from the nominal values For many applications like turbo or intercooler efficiency calculations multiple sensors are needed to measure pre and post intercooler or compressor temperatures At the tolerance of production sensors it is therefore necessary to calibrate them to get reliable results The LogWorks 2 0 Helper application Thermistorcalc exe which was installed in your LogWorks folder can calculate the circuit to use and can also produce a custom input lookup table for LogWorks For that it needs the resistance of the sensor at three different temperatures The temperatures MUST differ from each other by at least 25 degC or 45 degF 10 2 1 Calibrating thermistor sensors Of the three measurement points the easiest to get is the middle point Just leave the sensor in a warm room Room Temperature at or above 25 degC or 77 degC for at least an hour Measure 92 Logworks2_Manual_1 1 doc the resistance of the sensor with a digital multimeter and write it down Also record the temperature with a good thermometer Two other easy temperature standards available to everybody are the freezing point of water 0 degC or 32 degF and the boiling point of water 100 degC or 212degF Water does not usually hurt NTC resistor sensors Just make sure they are thoroughly dried
93. ssion Same as the Stop Recording button You can also stop while waiting for a trigger to interrupt the wait 4 5 4 Playback Brings up the Play Window E c Release Autobahn log 1 Dials Playback speed CETE Eo 12 Throttle x10 ioj x 37 Logworks2_Manual_1 1 doc The gauges in the playback window can be manipulated the same way as described in section 2 2 2 Manipulating the gauges The position type and colors of the gauges and of the playback window is saved in the log file when log file is saved In addition you can play single step forward and back and loop on an area If areas in a session are selected only the selected areas are played When playing back while a 3D chart graph is open see section 5 the play position is also indicated in the chart graph 4 5 5 Save Saves the log into a log file Either as log or as dif file dif files can be opened by many programs including Excel To open a dif file in Excel select Data Interchange Format as the file format in Excel 4 5 6 Save As Saves the log under a different file name 4 5 7 Save current session only With this menu item you can save the currently displayed session in a separate log file or dif file 4 5 8 Print Prints the log or current session A print dialog box like below appears hhh x Printer Name HP Deskjet 3740 Series Properties Status Ready Type HF Deskjet 3740 Series
94. ssion start condition In the above example the session starts when the Throttle channel indicates more than 50 and RPMs are greater than 3000 Use parenthesis liberally to indicate conditions DO NOT ENTER THE UNITS in the condition equations 30 Logworks2_Manual_1 1 doc For example DO NOT enter Throttle gt 50 LogWorks knows the units already from the channel name Throttle in this case and does not need to be told The persist field allows you to specify a length of time for the condition to persist before the recording is started This allows eliminating false starts due to for example spikes or glitches The Pre Record field allows you to set a time that LogWorks records before the start condition happened If set to 60 seconds as in the example LogWorks will include in the session the last 60 seconds before the start condition happened Pre Record times of up to 300 seconds can be programmed If a persist time is used the persist time is included in the pre record time 3 4 2 Trigger Stop Condition Setup Once a recording session has started it will only stop if the following things happen a The user stops recording with the stop button in the Log Window b A stop recording condition has been specified and the condition happened In the Log Trigger Stop field you can specify a stop condition This is done exactly the same way as for a start condition including the capability to program a persistence time to avoid stop
95. suggest default values for a question enter the default value in after the variable name in the question line as in this example Enter vehicle weight in 1b m 3000 The formula calculator libraries see chapter 7 always store the last entered user values in the appropriate library entry so they don t have to be entered every time they are used Formula Calculator allows to use as many intermediate results as you want to make the calculations clearer The following example shows how Example 3 Calculate torque and horsepower from vehicle weight acceleration gear ratios tire diameter and rpm m is vehicle weight in 1b m 3000 a is acceleration in g a 0 4 EF zm z a dia is tire diameter in inches dia 25 r dia 2 12 calculate radius in feet final differential ratio finaldrive 4 53 gear ratio of the gear in which the acceleration is measured gear_ratio 0 82 and finally rpm rpm 4500 torque F r gear_ratio finaldrive hp torque rpm 5252 Or this time without fixed values but a questionnaire that has to be filled out by the user 68 Logworks2_Manual_1 1 doc Enter vehicle weight in 1b m Enter acceleration in g a F m a Enter tire diameter in inches dia r dia 2 12 calculate radius in feet Enter final drive ratio finaldrive Enter gear ratio gear_ratio Enter rpm rpm ch torque F r gear_ratio finaldrive hp torque rpm 52
96. the example If voltages different than 0 and 5V are specified the range will be automatically expanded to 0 5V if the radio button Expand to 0 5V in Field 5 is selected even if the sensor is not capable to produce 0 5V the measured signal will stay within the range the sensor produces If the Limit to programmed range radio button is selected the input is limited to the programmed range in field 3 Input values outside the range will be clipped to the entered range To easily enter the correct voltage values when LogWorks is connected realtime to a Logchain you can also right click on one of the voltage fields TPS Example To calibrate a TPS sensor connect the sensor to for example an LMA 2 or LMA 3 switch the ignition on but don t start the car Enter as the unit and enter 0 in the upper box of field 3 Then right click on the upper box of field 4 A menu will show up that allows you to paste in the current voltage of the TPS sensor into the upper box of field 4 Next enter 100 in the lower box of field 3 depress the gas pedal fully and right click in the lower box of field 4 Paste in the full throttle voltage Field 6 Clicking on the Invert Scale exchanges the upper and lower boxes of field 3 This is useful for example for duty cycle measurement Normally the LMA 3 will measure positive duty cycle This means that 100 duty cycle happens when the input is at full voltage and 0 when the input is a OVolt A
97. this field shows a colored box This color is the trace color of this input in the logs Use a unique name Only letters numbers and the underline character are allowed in an input name 24 Logworks2_Manual_1 1 doc Field 2 Select or enter the unit to be used for that channel This drop down list shows all units that are preprogrammed into LogWorks For details about using units and unit conversions see chapter 8 Units typically belong to a unit family A unit family consists of different units for the same measured quantity For example you can measure pressure in PSI inHg kPascal and so on Conversion formulas describe how to convert between different units of the same family In the drop down list the units belonging to the same family as the current unit are shown in bold face When converting between absolute pressure and gauge pressure LogWorks will ask you to enter the current atmospheric air pressure Atmospheric Pressure Please enter current atmospheric pressure in inHg or millibar 29 92 You can enter this in either in inches of mercury inHg or millibar LogWorks decides from the number entered which unit is used This is asked only once after LogWorks has started and will not be asked again if that conversion is executed again For details see chapter 8 1 2 Field 3 4 and 5 Specify two voltages 0 and 5V in the above example in field 4 and the equivalent measurement quantity 0 and 101 3 kPa respectively in
98. tion channel from the LMA 3 69 Logworks2_Manual_1 1 doc Enter tire diameter in inches dia r dia 2 12 calculate radius in feet v Enter final drive ratio finaldrive Enter gear ratio gear_ratio Enter rpm rpm vv torque F r gear_ratio finaldrive hp torque rpm 5252 If the channel name is not known initially because the user might have assigned a different name to it you can ask for the acceleration channel as in this example i Enter your acceleration channel name a The Formula Calculator knows from the i following the question mark that a channel name is requested not a number 70 Logworks2_Manual_1 1 doc 6 5 Calculating new LogWorks channels Suppose you want to create a new channel from existing data This channel can be used then just like any other channel in LogWorks The LogWorks restriction of 32 channels includes calculated channels NOTE The restrictions on variable names also apply to channel names used in the calculations Example 5 Calculate torque and horsepower channels from vehicle weight acceleration channel gear ratios tire diameter and rpm channel Enter vehicle weight in 1b m F m ACCEL ACCEL is the acceleration channel from the LMA 3 Enter tire diameter in inches dia r dia 2 12 calculate radius in feet Enter final drive ratio finaldrive Enter gear ratio gear_ratio trq F r gear_ratio finaldrive MC power hp tr
99. tmospheric pressure Another vacuum measurement unit is mmHg It s the same as InHg but expressed in millimeters not inches When converting between absolute pressure units and gauge pressure units the LogWorks built in unit calculator will ask you for the current atmospheric pressure You can enter the atmospheric pressure either in millibar or inches of mercury Any barometer or weather station radio will give you the atmospheric pressure in one of those two units LogWorks will store the entered value in memory 8 2 The Conversions txt format You can add comments in the file by preceding a line of text with a All text in the line behind the is ignored by the unit calculator To reduce the number of conversion formulas required LogWorks uses a two step approach to the conversions First the source unit the one you are starting out with is converted into a master unit You can use any unit as master unit but make sure all units of the same family are using the same master unit For example for pressure the master unit is kPa A unit family is a group of units measuring the same quantity like pressure or temperature In the second step the converted value converted to the master unit is converted to the target unit the one you want to convert to Example to convert PSI absolute into bar absolute PSla absolute pressure in PSI is converted first into kPa Then the kPa value is converted to bar In the formulas fo
100. typical fuel injector and also ignition points show full voltage when off and OV when on This is a negative duty cycle By inverting the scale you can measure this duty cycle correctly where OV means 100 and full voltage means 0 Field 7 Adds or deletes custom lookup tables See chapter 3 3 2 for details 25 Logworks2_Manual_1 1 doc Field 8 This field shows the name type and icon of the device where this input is from If a device allows the connection of optional accessories the accessory selected is also shown The example shows a LMA 3 Auxbox connected to the LM 1 Field 9 This indicates the input mode selected for this input dependent on the device LogWorks interrogates all devices connected to the serial LogChain during connection and downloads their settings If the settings have changed since the last time LogWorks started LogWorks will change the current input to the current settings of the input using defaults for the unit and range If a device is connected to the Aux In port of the LM 1 it can t be interrogated by LogWorks In this case you have to manually select the function and if necessary fill out the fields for range and unit See the manual for the appropriate device for details Field 10 Allows you to select sub functions for the selected main function as selected in field 9 This field will only be shown when sub functions are selectable Field 11 This field is present only for devices that allow co
101. ulates hyperbolic cosine as in cosh x fact Calculates the factorial of x as in fact x calculated as _x x 1 x 2 x x 1 floor Limits value to a minimum as in floor x 2 would limit x to a minimum of 2 74 Logworks2_Manual_1 1 doc max Returns the largest of a set of variables as in max a b c d min Returns the smallest of a set of variables as in min a b c d In Calculates the natural logarithm base e of x as in In x logi0 Calculates the base 10 logarithm of x as in log10 x sin Calculates sine as in sin x sinh Calculates hyperbolic sine as in sinh x sqrt Calculates square root as in sqrt x sum Calculates the sum of multiple values as in sum a b c d tan Calculates tan as in tan x tanh Calculates hyperbolic tan as in tanh x Note Trigonometric functions sin cos use radians arguments not degrees Special channel functions slope Calculates the slope or differential of a channel as in slope channel area Calculates area under the channel curve or partial integral or area as in area channel t0 t1 where t0 and t1 are constants in seconds in the session Can also be used as in area channel t 10 t 10 to calculate running area integral Note The slope functions will only take a channel name as argument not an evaluated function as in slope channel x y The automatic unit conversion operator can be applied though Note2 Slope calculations are very sensitive to noise on the channel To m
102. umber between 0 and 1023 or a total of 1024 steps incl 0 This is equivalent of a 10 bit resolution 2 1024 The resulting resolution for a 0 5V signal is therefore about 4 9 mV Any signal variations smaller than that cannot be resolved LogWorks has capabilities to convert the logged number back to the original quantity provided the characteristics of the original sensors are known This means that LogWorks needs to know how to convert the voltage output of the original sensor to the measured quantity equivalent The Air Fuel Ratio signal of the MTS components is not digitized from an external analog voltage Instead it is internally calculated For logging purposes this signal is internally always stored as Lambda with a resolution of 10 bits 1024 steps To create the Air Fuel Ratio the Lambda value is multiplied with the stoichiometric ratio for the given fuel like 14 7 for gasoline by the LogWorks software The datalog range for Lambda is 0 5 to 1 523 equivalent to 1024 steps with a resolution of 0 001 Lambda for gasoline this is equivalent to a 0 0147 AFR with a range of 7 4 to 22 4 AFR This range is more than sufficient for spark ignited internal combustion engines AFR Lambda ranges outside of the logging range are pegged at the minimum or maximum point respectively See the manual for the MTS device you are using for details on how to connect various sensors 2 3 Sensor Hookup Almost any sensor requires a ground connect
103. und the other is connected to a load resistor Often the ground pin is omitted and the sensor is grounded through its body to the engine The other end of the load resistor is connected to a voltage supply typically 5V The purpose of the load resistor is to form a voltage divider with the sensor At the connection between load resistor and sensor a voltage is formed that is dependent on the resistance change of the sensor according to this formula Vout Vsupply Rs Rs RL Were Vout is the output voltage Vsupply is the supply voltage Rs is the sensor resistance and RL is the load resistor For maximum sensitivity RL is typically chosen to be equal to Rs at the typical operating point A sensor that falls between resistive sensors and voltage output sensors with external supply is the throttle position sensor Although it is a resistor with a movable tap it behaves looks and interfaces exactly like a voltage output sensors with external supply d Frequency sensors 10 Logworks2_Manual_1 1 doc These sensors output a signal that varies in frequency oscillating voltage with the measured quantity Examples are some MAF sensors the tach signal that measures engine RPMs and the vehicle speed signal generated by drive shaft or wheel sensors The LMA 3 Auxbox has the capability to convert these frequencies into a digital or analog signal that can be interpreted and logged The MTS components convert the sensor data to a digital n
104. values Pre assigned constants and values e 2 71828182846 pi 3 14159265359 t time in seconds from begin of session Math Operators Addition Subtraction t Multiplication Division A Power of as in x 2 would square x Boolean Operators Boolean operations result in just one of 2 possible results 1 or 0 equivalent to true or false The following Boolean operators are built into the Math Calculator amp AND as in a amp b Result is 1 if both a and b are 1 OR as in a b Result is 1 if either a or b are 1 NOT as in Ja Result is 0 if a is not 0 Result is 1 of ais 0 EQUAL as in a b Result is 1 if a is equal to b Otherwise result is 0 l UNEQUAL as in a b Result is 0 if a is equal to b Otherwise result is 1 gt GREATER THAN as in a gt b Result is 1 if a is bigger than b lt SMALLER THAN as in a lt b Result is 1 if a is smaller than b gt GREATER OR EQUAL as in a gt b Result is 1 if a is bigger or equal to b lt SMALLER OR EQUAL as in a lt b Result is 1 if a is smaller or equal to b Regular Math Functions abs Calculates absolute value x turns into x acos Calculates arc cosine as in acos x asin Calculates arc sine as in asin x atan Calculates arc tan as in atan x avrg Calculates the average of multiple values as in avrg a b c d ceil Limits value to a maximum as in ceil x 10 would limit x to a maximum of 10 cos Calculates cosine as in cos x cosh Calc
105. venient to start stop a log not by hand but automatically when certain conditions are met The New Triggered Realtime Log and Log Trigger Setup menu items in the Main window file menu allow you to do that Examples are in drag racing where a run needs to be logged but there s no time to select the appropriate menu while waiting in the staging area Another use is to track down random problems The trigger condition can be set up to start a session when the problem condition happens It can then also pre record a programmable time before the condition happened so one can see what led up to the problem without searching through long sessions Pre record includes the programmed number of seconds of data before the start condition happened When waiting for a trigger LogWorks continuously records data but keeps only the last pre record seconds and throws older data away When the trigger happens the current data buffer is first inserted in the session followed by the recording When selecting the Log Trigger Setup menu item the following dialog box will show up Realtime Log Trigger E x Channel Comparison and or m Log Trigger Start when Throttle gt 50 AND RPM gt 3000 and condition persists for 0 00 sec Pre Record feo sec m Log stops when and condition persists for ooo sec PostRecord 0 00 sec Cancel 3 4 1 Trigger Start Condition Setup In the Log Trigger Start field you enter the se
106. verlay session is used the overlay values are shown in parenthesis and italics like this overlay 6 Graph Pane Shows the graphs of the active channels color coded Moving the cursor over a channel highlights the channel trace shown in double thickness Right clicking on the highlighted channel brings up a menu to manipulate different aspects of the channel Leaving the cursor on the highlighted channel for a second will show the name of the channel 7 Time scale area 8 Note area In this area notes can be placed to comment events at that point in the session Notes are indicated by an Icon Moving the cursor over a note will show the note contents in the Measurement Pane Double click on the note Icon to edit the note text You can also move the note in the note area by clicking and dragging Some MTS logging devices can record audio comments while logging If an audio comment is inserted an audio note icon amp will be shown at the audio comment point Double click on the icon to play the audio comment To delete a note drag the note outside the note area 9 Text Note Indicates a text note at that point 10 Measurement point Any number of measurement points can be inserted in a graph The measurement points scroll with the graph A measurement point shows the values of all active inputs at that particular point in time 11 Session length info Shows the total length of the session 4 2 Log Window Tools Sel
107. ving a real time log or a LM 1 log Up to 30 such logs can be opened by LogWorks concurrently LogWorks stores logs in either of two file formats Log files file extension log Or DIF files file extension dif The log file format is native to LogWorks It stores the original data in a very compact format and also stores additional information like measurement points filter parameters and all input settings This allows to change and manipulate the data later more conveniently than the DIF file format 15 Logworks2_Manual_1 1 doc The DIF file format is used to allow importing the log data into spreadsheet program like Microsoft Excel The DIF format stores the data as manipulated by LogWorks and already converted into the real engine quantities Because of that information can be lost when reloading a DIF file for further manipulation The DIF format should only be used when the log data is to be processed by external software like Excel NOTE LogWorks 2 0 LOG files file extension log are different from log files created by an earlier version of LogWorks Although LogWorks 2 0 can read the earlier files an earlier version of LogWorks can t read the new file format 2 7 LogWorks Files LogWorks uses the following files These are installed in the same directory or folder where the LogWorks program file LogWorks exe is installed LogWorks exe the main LogWorks Program Mts dll the MTS serial protocol manager i
108. ws you to manipulate the AFR multiplier stochiometric ratio of fuel used for all Mixture channels in the log This has only an effect if the mixture for the mixture channels WB O2 channels is shown as AFR 47 Logworks2_Manual_1 1 doc 4 9 Log Window Tools Menu Tools Hand Tool Ctrl H Selection Tool v Measure Tool Ctrl M Scroll Overlay Alt H Delete Measurements 4 9 1 Tool Selections The Hand Tool Selection Tool Measure Tool and Scroll Overlay selections are the same as described in the Log Window Tools chapter 4 9 2 Delete Measurements Deletes all measurement points in the current session 4 9 3 Formula Calculator Brings up the trace calculator window See Section 6 Math Calculator for details 4 9 4 Formula Collection Brings up the trace calculator Library See section 7 LogWorks Libraries for details on how to use the various libraries LogWorks uses 48 Logworks2_Manual_1 1 doc 4 10 Log Window View Menu View Cascade Windows Ctrl T New X Y Plot Ctrl x y Plots L Statistics b New Chart View Chart D 4 10 1 Cascade Windows This item causes all auxiliary views of the session Statistics Window or X Y Plot Window see below to be stacked in the top left corner of your screen 4 10 2 New X Y Plot This opens a new X Y Plot window An X Y plot window shows the data of any two inputs in a two dimensional graph like this W Log File XYPlot RPM
109. y if various aspects like smoothing or the configuration of channels used to calculate the Math traces changed See chapter 6 Math Trace Calculator for details about calculated channels 4 8 7 Change Trace colors Brings up a dialog box to change the colors of the channel traces x Channel Trace colors Click to select Channel Color Brightness SES ES Ka LM1_O2 RPM Throttle eg a A Cancel i On the left side of the dialog box select the channel whose color needs to be changed Click anywhere on the color circle to change the hue or saturation of the color Saturation is how intense the color is Gray scale colors have a saturation of zero and are located in the center of the circle The distance from the center is a measure of the saturation The slider on the right of the window determines the brightness of the color in of the max brightness achievable for the selected hue and saturation 4 8 8 Apply default smoothing If the current smoothing values for a channels are saved this applies the saved smoothing values to all channels in the session 4 8 9 Save current smoothing as default Saves to smoothing values for all channels of the current session as default values to be used later 4 8 10 Show Mixture as AFR or Lambda Allows you how to show the Mixture channels in either AFR or Lambda 46 Logworks2_Manual_1 1 doc 4 8 11 Set Fuel Type Allo

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