RIVA / Athena Pro-Series ECU

Transcription

1 RIVA / Athena Pro-Series ECU USING SOFTWARE (MAYA) Running Maya for First Time Once installed, Maya is available in the Start menu under Programs -> Maya, or from a desktop short cut, if created. The first time that Maya is run it will prompt to select a directory where its data will be stored. The location is normally in the User directory where Maya data can be easily retrieved. On startup Maya will be as shown as follows. Figure 1 Maya Main Window Maya has a multi-window interface, whose secondary side window can be moved and resized at the users choice. Breakdown of Main Window: 1. Main Menu: Gives access to all the Maya functionalities. 2. Tool Bar: Replicates the most commonly used commands available in the menu. 3. Device Manager: Tool at the left of the main window which holds the tree of all data and information available from the ECU. 4. Device Help Panel: Panel on right side of the Main Window. Displays the description and all useful information about elements shown in the Device Manager. 5. Status Bar: Bar at bottom of window, typically providing information about the selected menu entries or about Device Manager objects. Word doc. Using Maya H1 10/10/12 1

2 Before working with your ECU the following must be completed. First Step When Using Maya Open a Device File. Device Files are the files that describe the configuration of the ECU used and are provided with configuration files (MAPs) downloaded from the ECU Manager Web Site. Device Files have the extension.mya. Double clicking on a Device File opens a new instance of Maya and loads it. Maya functionalities are available only if a Device File is loaded. Note: Device File is model specific. Opening a Device File is a required step. Tool Bar Items Figure 2 Tool bar elements. Description of Tool Bar Icons 1. Opens a device descriptor file using a Windows open dialog box. 2. Opens a configuration file using a Windows open dialog box. 3. Saves current ECU configuration file using a Windows save dialog box. 4. Read MAP from ECU and load into Maya memory. 5. Download current MAP data to ECU. 6. Selects MAP ID where to operate. It is the same as MAP number shown in the Device Manager tree. This is used for Dual Configuration files, also called Dual MAP Switch. 7. New Activity Window Opens a new window for various display options. 8. How to select the named activity windows. 9. How to select the active MAP (this is the slot a configuration file, or MAP, will be downloaded to). 0 is the default MAP location. 10. Connect to ECU (communicate with ECU) and begin real-time monitoring. 11. Disconnect from ECU (stop real time monitoring) and close communication with ECU. Connect and Disconnect buttons are mutually exclusive; activating one disables the other, and vice versa. 12. Opens End Of Line window.; 13. Opens Diagnostic window. 14. Read hour meter and display its value. Word doc. Using Maya H1 10/10/12 2

3 Device Manager Contents When a Device File is loaded the available contents will be displayed in the Device Manager. These represent the data that are configurable or readable from the ECU. NOTE: Some elements described below may not be present in the Device Manager: This is dependent upon ECU model and firmware version and upon Maya license type. See Figure 3. Selecting an object in the Device Manager tree automatically displays the object description in the Device Help Panel, if any. Figure 3 Typical Device Manager tree contents Typical Elements of Device Manager Tree: 1. Constants: These are constant values set for a specific ECU model. E.G. Upper and lower limits of value ranges. Constants are read-only values. When a constant item is selected its value is shown in the status bar. 2. Relations: They are the relations linking objects inside the MAP tree. E.G. A relation can set a vector object to be the source of X or Y values for a given matrix object (see MAP objects). 3. Addresses: These are the data that can be accessed through access to specific memory addresses of ECU. 4. MAP Items: A number of MAP object is presented, corresponding to the maximum number of MAPs that can be saved to the ECU. Each MAP object contains four types of sub-objects: a. Matrices (icon): A matrix is an ECU parameter depending on two other values (E.G. The fuel injection as a function of rpm and throttle). It is represented through a table, or a 3D plot. Double-clicking on a matrix object in the Device Manager opens a matrix Window. b. Vectors (icon): A vector is an ECU parameter depending on a single other parameter (E.G. Breakpoint numbers). It is represented by a single-column table, or by a 2D plot. Double-clicking on a matrix object in the Device Manager opens a matrix Window c. Scalars (icon): Scalars are ECU parameters with a single value. If the value is editable, double-clicking on a scalar item in the Device Manager opens the scalar edit window. Selecting a scalar in the Device Manager shows its value and short description in the status bar. d. Strings (icon): Strings are ECU parameters representing a string. A special string is the one identified by filename. It tracks the file name given to a MAP object, storing it also in the ECU, so the user can recall which files were downloaded to ECU. 5. Packet: Lists the variables that can be read from ECU in real time mode. The Device Manager only list these. The values can be seen using Scalar Displays or Analogue Meters. 6. MAP Objects represent the parameters that can be tuned into the ECU to change its behavior. There are three main types: Matrices, Vectors and Scalars. To access them, expand the MAP item on the Device Manager. Then, expand the kind of item you want to open and double-click the name of the single object. A specific edit window will be displayed; described later in this chapter. Word doc. Using Maya H1 10/10/12 3

4 Matrix Object Window A Matrix Object Window is divided in two parts. 1. Toolbar at the bottom 2. Notebook View on top. Notebook View typically has two tabs which can become three when the Corrections window is enabled. The first tab is 3D View, plotting the data as a 3D surface (shown in Figure 4). The second tab is Tabular View, displaying data as a spreadsheet (shown in Figure 5). Figure 4 3D View tab in the matrix window. The 3D view can be rotated by right-clicking and dragging the view with the mouse. In preferences, the tab 3D View enables you to set a wide range of options for the visualization of 3D plots such as colors, line widths, the use of antialiasing and more. Word doc. Using Maya H1 10/10/12 4

5 Figure 5 Tabular View tab in the matrix window. The Tabular View displays X values on columns and Y values on rows. It makes it possible to edit the single values inside the cells by simply clicking on them. Values may be rounded to a slightly different value to satisfy Maya internal representation of data (increment step varies from variable to variable). If a value is typed that is outside the valid range for that variable its value is automatically bounded to the right data range. The buttons in the bottom bar enable the following operations (described from left to right): 1. Edit applies a multiplication factor and an offset to all the selected values according to the formula: new_value = old_value*gain + Offset 2. Interpolate performs a linear interpolation of selected data according to the value of the interpolation type selector at its right. X interpolation performs interpolation along a single row, so that the values are transformed into a linear interpolation of the first and last selected values of each single row. Y interpolation performs interpolation along a single column, so that the values are transformed into a linear interpolation of the top and bottom selected values of each single column. XY interpolation performs bi-linear interpolation along both rows and columns, so that the values are transformed according to the values of the four corner cells of the selection: for this reason, this type of interpolation will not work on single rows or columns. 3. Add/Subtract decrement/increment the value of every selected cell by a single variation step (which depends on the internal variable representation, varying from one MAP object to another). 4. Undo and Redo modification operations. 5. Selector makes it possible to select measurement units (if any) of the data, and to convert them automatically. 6. Preview toggles a preview of the MAP data (only when corrections view is enabled). Word doc. Using Maya H1 10/10/12 5

6 Vector Object Window The Vector Object Window is composed of a plot, a single column table with data display, and a tool bar at the bottom Figure 6 Example of a typical vector window. Values in the Tabular View can be edited the same way as matrices values. Values can also be edited by dragging the control points on the plot up and down. The control points cannot be dragged outside of the range allowed for variable. The plot has full mouse controls for zoom, pan and scrolling. The buttons in the bottom bar enable the following operations (description is from left to right): 1. Opens the Menu. 2. Edit multiplication factor and an offset can be applied to all the selected values, according to the formula: new_value = old_value*gain + Offset 3. Interpolate performs a linear interpolation of selected data, according to X values. 4. Undo and Redo of the modification operation. 5. The Selector makes it possible to select measurement units (if any) of the data, and to convert them automatically. 6. The (minus) and + (plus) buttons respectively decrement/increment the value of every selected cell by a single variation step (which depends on the internal variable representation, varying from one MAP object to another). Word doc. Using Maya H1 10/10/12 6

7 Scalar Objects Window Scalars are slightly different from matrices and vectors. A unique window containing all of them can be opened for editing (see Figure 7). Figure 7 Scalars editing window. Selecting a variable automatically displays its help in the right part of the window. Values can be edited directly, or incremented and decremented both using the + (plus) and - (minus) buttons, or left and right arrows keys. To apply the modifications made click OK. REAL TIME MONITORING Maya enables monitoring of ECU parameters in real time and ability to display them in monitoring windows. To start monitoring select Communication Connect to ECU, or the equivalent button on the tool bar. Many controls will be disabled and the acquisition started if no errors occur. To stop monitoring select Communication Disconnect from ECU, or the equivalent button on the tool bar. Display of Real Time Values Activating monitoring is not enough to see the data. An appropriate display window must be opened. For direct monitoring of variables two methods are available: Scalar Display and Analogue Meter Display. Word doc. Using Maya H1 10/10/12 7

8 Scalar Display of Real Time Values To create a new scalar display select Tools -> New Scalar Display. A variable selection window will appear. Select the variables to be monitored and click OK. The scalar display will open (see Figure 8). Figure 8 A Scalar Display with 5 variables running. Every variable is presented including its name, its value (which is refreshed during monitoring), a measurement unit selector, and a level bar showing the level of the variable with its minimum and maximum. To change the list of variables included in the Scalar Display, double-click the blank space below the last variable displayed. Analog Meter Display of Real Time Values As an alternative to Scalar Display, the variables can also be monitored using analogue meters (see Figure 9). To insert a new analogue meter in the main Maya view, select Tools -> New Analog Meter Display. The procedure is similar to that of Scalar Displays. Figure 9 Analogue meter with 3 elements Word doc. Using Maya H1 10/10/12 8

9 Vector and Matrices Monitoring of Real Time Values In addition to displays for single variables, the monitoring can also be done on vectors and matrices. If one of their axes is a variable available for monitoring the working point is represented dynamically on the respective windows. For vectors, a vertical or horizontal line is plotted over the graph and its intersection with the curve is highlighted by a green circular point (see Figure 10). Another point highlights the closest control node on the curve. On the plot, the coordinates of both points are written and finally, the working point is also highlighted with a different background color in the tabular view. For matrices, in the tabular view, the working point is highlighted with a different background color and a moving red point represents it in the 3D view. Figure 10 Real time monitoring on a vector plot. Word doc. Using Maya H1 10/10/12 9

10 END OF LINE (EOL) CALIBRATION Your ECU is programmed with standard values, but every engine needs some calibration values to account for sensors calibrations, tolerances, etc. Such calibration values can be set in the ECU through the End Of Line tool. These values will vary based on the make, model, and year of your craft. To start End Of Line, select Menu -> Tools -> End Of Line, or the equivalent button on the tool bar. The End of Line Parameters window will open (see Figure 11). A list of End of Line Parameters is displayed on the left. Useful calibration parameters that are periodically read from ECU, and refreshed, are displayed on the right. Typically this list contains only the TPS value and they are read-only values. Values on the left side can be edited in the same way of Scalar Variables. The state of parameters can be read from ECU by clicking Read End Of Line. All values will be overwritten and re-read from ECU each time Read End of Line is clicked. Values are automatically read every time the End Of Line window is opened. When a parameter has been correctly edited it can be set to the ECU by clicking the Set End Of Line button. Factory defaults can be restored at any time by clicking the Reset End Of Line button. NOTE: Modifications should be made here with caution. Figure 11 End Of Line setting window. Word doc. Using Maya H1 10/10/12 10

11 CORRECTIONS Corrections are modifications to the MAP objects that can be acquired during monitoring in order to fine tune the values of the engine working parameters in all operating conditions. These can be added to or multiplied to the existing matrix values, creating new working MAPs to be downloaded to the ECU. Figure 12 Correction group panel. Process to acquire corrections up to the creation of a new MAP: 1. Activate Corrections Window Select Menu -> Corrections -> View Corrections. A warning will be displayed that Maya must be synchronized with the ECU. MAPs will be read from the ECU and existing data will be overwritten. NOTE: Any unsaved data will be lost. Click OK to begin process. 2. Select Corrections to be Acquired After loading MAPs a new panel will appear on the right side of the Maya main window composed of a set of panels like the one represented in Figure 12. Each sub-panel represents a Correction Group; a set of corrections that can be applied separately (selecting the singular elements) or together. The first item of each group (in bold font) is the group itself. Selecting this item (using the check box to left of name) disables all other elements in the group. As a result, changing the value of the group element will change all of the other elements together following the value of the group. 3. Open Associated Matrices Every correction or correction group is associated to a matrix object, which is where the correction values will be applied. Association depends on ECU model. Please note that a group can be associated to a different matrix than its component corrections. Opening a matrix associated with a correction or correction group will present a new tab in the matrix window called a Correction MAP. Its content is a table similar to the tabular view of the matrix, but containing values associated with the corrections. Word doc. Using Maya H1 10/10/12 11

12 4. Set Correction Values to ECU To acquire the correction begin monitoring the ECU values. Changing the value of the correction(s): some ECU parameters will vary accordingly (this can be seen using scalar or analogue meter displays). The working point is displayed on the matrix associated with the correction enabling you to see which engine working condition will be affected by the correction. 5. Acquire Correction Values Changing the correction value does not affect the data on the MAPs neither in Maya memory, nor in ECU memory. Values are only corrected at runtime by ECU. When the engine values at a fixed working point are satisfactory they can be stored by clicking the space bar on the keyboard. This saves the current value of the selected corrections in the current working point of the associated matrix. The new value is displayed in the appropriate cell of the Correction view in the matrix window. 6. Prepare and Preview Corrected Data Once the points are acquired correctly the monitoring can be stopped. The values in the correction panel are reset to their default values while the acquired values remain in the Correction view of the matrix. They can now be edited in the same way as the standard matrix element. Once editing is completed data can be previewed using the Preview button. Preview data will be displayed in the Tabular View window, and values differing from the previous state are highlighted with a green background. In 3D view, the modified matrix will be displayed as a red overlay over the pre-existing surface (see Figure 13). Figure 13 3D view and corrections applied. 7. Saving Corrected Data Once the correction work is complete a new MAP with new matrix data can be generated. To do so, select File -> Create new MAP and follow the procedure. Select the edited MAPs to be saved in the new MAP. Save the new MAP to file. A dialog window will ask to send the new MAP directly to the ECU. If yes, the download process will start. The new MAP is automatically loaded into the ECU and the correction process can be started from the beginning, if needed. Please remember that until the new MAP is downloaded to ECU no effect will take place in the ECU behavior. The ECU continue to work with old values. Word doc. Using Maya H1 10/10/12 12

13 8. Temporary Data Saving and Automatic Save Working with corrections is time consuming. It is recommended that you save the values before applying them to a new MAP. You can manually save a correction work session by entering Corrections -> Store Corrections session. You will be prompted to provide a session name and the file will be saved. To restore a previously saved session, enter Corrections -> Restore Corrections session. A list of available sessions will appear, including their saving date and time. Sessions are saved automatically every 10 minutes when working with corrections. To change autosave interval, or to disable it, use the field in the preferences tab, File -> Preferences -> General. NOTE: Sessions saves raw data of corrections. They are not applied to MAP data so they do not affect the ECU behavior. To do so follow procedure in point 7. MAYA UTILITIES Diagnostic To open the diagnostics window, select Tools -> Diagnostics, or the equivalent button in the tool bar. The Diagnostic window will appear. This window contains a list of error codes with their description and status. Initially all codes are in undefined state. To read values click Read. All values can be reset by click Reset. Hour Meter The hour meter is an indicator of how long the ECU has operated. To read its value select Tools -> Hour Meter, or the equivalent button on the tool bar. A dialogue window will open displaying the ECU s total working time. Clear Service Flag Users are able to clear a service flag, which is a flag setting an internal counter in the ECU, tracking the engine maintenance intervals. To clear the service flag select Tools -> Clear Service Flag. Word doc. Using Maya H1 10/10/12 13