Throttle-off Turn-in
A Throttle-off turn-in event simulates the dynamics of a vehicle driving a constant radius turn at steady state, the reaction of the vehicle due to a sudden removal of drive torque during the cornering event.
The event includes a short straight section to allow the vehicle to come to steady state, the constant radius circle, and throttle removal. The event is designed to simulate a highway exit ramp maneuver. Appropriate vehicle and tire output requests are included. A plot template is available to plot the results.
Parameter | Description |
---|---|
Radius | The radius of the circle that the vehicle CG will follow during the constant radius portion of the event (meters). |
Initial straight | The distance the Vehicle is driven straight and it attains the steady state (meters). |
Turn direction | Direction the vehicle turns during the event (as seen by the driver) |
Velocity | The defined speed of the vehicle during the event (meters/sec). |
Look ahead time | Drive Model look ahead time (seconds). |
Prediction step size | Defines the output data step size in seconds (if the number is .02, data is output every .02 seconds). |
Throttle off time | The absolute time in the simulation that the throttle controller begins removing drive torque (seconds). |
Throttle step duration | The length of the time the throttle controller takes to completely remove the drive torque. |
Steer ramp time | |
Steer ramp rate | |
End time | Absolute end time of the event, in seconds. |
Print interval | Data is output to the plot files and graphics file at this time interval (seconds). |
Reference
ISO 9816-2006 Passenger cars — Power-off reaction of a vehicle in a turn.