Dyno2 Dynamometer Software – working in run tab

RUN tab is used to make new measurement and to work with the car by using dyno brake and speed control.

Elements of RUN tab
  1. START / STOP – start or stop saving measurement data
  2. ADVANCED TEST – run predefined dyno test such as constant acceleration ramp, step test etc.
  3. ANALYZE LAST RUN – shortcut for loading measurement data to ANALYZE tab after finished run
  4. Current run comment
  5. Engine speed source selection widget is used to select the source for engine speed used in calculations. Following options are available:
    • calculated – the speed is calculated with a constant ratio to dyno speed. The ratio can be automatically calculated by using tools available on right click:
      • Set from current engine speed – the ratio is calculated from current speed using entered engine speed
      • Set from max engine speed – the ratio is calculated from maximum recorded speed using entered peak engine speed
      • Get from OBD – the ratio is calculated from OBD interface information
    • engine clamp – the speed is sourced from “Engine speed” input in the controller
    • OBD – the speed is continuously sampled from OBD interface
    • CAN channel – the speed is taken from manually configured CAN-bus message
  6. Loss model – model used to estimate power lost in the drivetrain and on the tire-roller contact patch. The model is used to calculate engine power from the power measured on dyno rollers. Loss model calculation tool is available by right-clicking on the Loss model label.
  7. Brake controller – widgets responsible for controlling absorption dynamometer absorber. The control can be based on dyno road speed or on engine rotational speed. Following control modes are available:
    • F9 Inertia – dyno absorber is disabled
    • Manual – each brake channel is controlled manually and separately
    • F10 Manual Joined – all brake channels are controlled manually together
    • F11 Const. Speed – the software keeps engine speed constant
    • F12 Acceleration – the software limits engine acceleration or deceleration
  8. Throttle control – value used to control engine throttle if such option is available. Throttle control must be properly configured in SETTINGS / Throttle control tab.
  9. Outputs control – this section of the application shows current output state and allows to control their state.
  10. Desktops – area that can be freely configured by user and is used to visualize information channels available to dyno software.

Outputs control

The outputs section of the application shows current output state and allows to control their state.
Output control is possible in two modes: manual and automatic.
In manual mode, the output is activated with mouse click on the output label. It can be also activated with press of a keyboard button (F1 – F8 from top to bottom). Output state can be monostable or bistable. Monostable output is active only when activating signal is present (keyboard key or mouse button pressed). It is a good option for controlling starter motor. Bistable output state changes and latches every time it receives activating signal.
In automatic mode, the output is controlled with programmable logic function. User functions can be created in SETTINGS / Functions tab.
Output configuration is available by right-clicking the output label. Available options are:

  • Creation of own text label for the output.
  • Control source selection (Manual / Function).
  • Bistable output mode option.
  • Control function selection.

New function and Edit function shortcuts are available on hand. The function must have quantity set to “logic” to be available for selection as output control function.

Using Loss Model in RUN tab

Loss model can be used in RUN tab to calculate the engine power on the run using losses estimation from previous run.

Brake control modes

Setting up desktops and available widgets

Dynamometer software configurable user interface
  1. Indicator – shows logic channel state by filling with selected color.
  2. Number – shows data value as numeric value.
  3. Bar – shows data value as color filled bar.
  4. Gauge – shows data value as a gauge with needle pointing the value.
  5. Time Plot – plots data value as a function of time.
    Time based plot shows selected channels as a function of time. On this plot we can see for example recent speed and power values. Channel selection is made by right-clicking the plot axis to which we want to assign different channel. Plotting can be paused or cleared during the run. Data retention time can be adjusted with Time history value in widget configuration.
  6. Scatter Plot – plots data value as a function of another value.
    Scatter plot allows to analyze relations between any data channels. These can be for example power and ignition angle. Channel selection is made by right-clicking the plot axis to which we want to assign different channel. Plotting can be paused or cleared during the run. Data retention time can be adjusted with Time history value in widget configuration.

Widgets through the right click allow access to data channel configuration options.

  1. Hides data channel in selection lists
  2. Text name that is displayed in widgets
  3. Physical quantity that the channel represents
  4. Unit for the value display
  5. Number of decimal places in value display
  6. Channel color
  7. Automatic scale adjustment based on data values
  8. Minimum range span with autorange option
  9. Manual range maximum
  10. Manual range minimum
  11. Threshold to display high alarm information on status bar
  12. Threshold to display high warning indication in widget
  13. Threshold to display low warning indication in widget
  14. Threshold to display low alarm information on status bar
  15. Low pass filter time constant for data display