Powertrain GearBox6 Component

Powertrain Component
GearBox6

Description:	The GearBox6 component models an automatic transmission gearbox. The selected gear is determined using a shift map. There is an upshift map defined by GearUpShiftAngles and GearUpShiftSpeeds and there is a downshift map defined by GearDownShiftAngles and GearDownShiftSpeeds. The current vehicle speed is calculated by dividing the downstream velocity (Vel3) by the final drive ratio and multiplying by the wheel radius: EstimatedSpeed=Vel3/FinalDriveRatioWheelRadius The accelerator pedal angle is used in the upshift map to calculate the speed required for an upshift. If the estimated speed is greater than the required speed, the transmission is shifted up to the next gear. The accelerator pedal angle is also used in the downshift map to calculate the speed required for a downshift. If the estimated speed is less than the required speed, the transmission is shifted down to the next lower gear. Once the current gear is calcuated using the above procedure, the appropriate gear ratio, torques and speeds are calculated as: Torque3=Torque1GearRatio[CurrentGear] Vel1=Vel3*GearRatio[CurrentGear] The gear ratio is filtered using a first order lag and the SGearRatio state.
Inputs:	SimRealVar Torque1 - Upstream Torque (Nm) SimRealVar Vel3 - Downstream Velocity (rad/s) SimRealVar GearRatios[7] - Gear Ratios (ND) SimRealVar DriverGear - Driver Gear Selection (ND) SimRealVar Accel - Accelerator Pedal Angle (deg) SimRealVar WheelRadius - Wheel Radius (m) SimRealVar FinalDriveRatio - Final Drive Ratio (ND) SimRealVar Gear0UpShiftAngles[10] - Gear 0 Upshift Accel Angles (deg) SimRealVar Gear1UpShiftAngles[10] - Gear 1 Upshift Accel Angles (deg) SimRealVar Gear2UpShiftAngles[10] - Gear 2 Upshift Accel Angles (deg) SimRealVar Gear3UpShiftAngles[10] - Gear 3 Upshift Accel Angles (deg) SimRealVar Gear4UpShiftAngles[10] - Gear 4 Upshift Accel Angles (deg) SimRealVar Gear5UpShiftAngles[10] - Gear 5 Upshift Accel Angles (deg) SimRealVar Gear0DownShiftAngles[10] - Gear 0 Downshift Accel Angles (deg) SimRealVar Gear1DownShiftAngles[10] - Gear 1 Downshift Accel Angles (deg) SimRealVar Gear2DOwnShiftAngles[10] - Gear 2 Downshift Accel Angles (deg) SimRealVar Gear3DownShiftAngles[10] - Gear 3 Downshift Accel Angles (deg) SimRealVar Gear4DownShiftAngles[10] - Gear 4 Downshift Accel Angles (deg) SimRealVar Gear5DownShiftAngles[10] - Gear 5 Downshift Accel Angles (deg) SimRealVar Gear0UpShiftSpeeds[10] - Gear 0 Upshift Speeds (kph) SimRealVar Gear1UpShiftSpeeds[10] - Gear 1 Upshift Speeds (kph) SimRealVar Gear2UpShiftSpeeds[10] - Gear 2 Upshift Speeds (kph) SimRealVar Gear3UpShiftSpeeds[10] - Gear 3 Upshift Speeds (kph) SimRealVar Gear4UpShiftSpeeds[10] - Gear 4 Upshift Speeds (kph) SimRealVar Gear5UpShiftSpeeds[10] - Gear 5 Upshift Speeds (kph) SimRealVar Gear0DownShiftSpeeds[10] - Gear 0 Downshift Speeds (kph) SimRealVar Gear1DownShiftSpeeds[10] - Gear 1 Downshift Speeds (kph) SimRealVar Gear2DownShiftSpeeds[10] - Gear 2 Downshift Speeds (kph) SimRealVar Gear3DownShiftSpeeds[10] - Gear 3 Downshift Speeds (kph) SimRealVar Gear4DownShiftSpeeds[10] - Gear 4 Downshift Speeds (kph) SimRealVar Gear5DownShiftSpeeds[10] - Gear 5 Downshift Speeds (kph) SimRealVar Vel3 - Downstream Angular Velocity (rad/sec)
Outputs:	SimRealVar Torque3 - Downstream Torque (Nm) SimRealVar Vel1 - Upstream Velocity (rad/sec) SimRealVar CurrentGear - Current Gear (ND)
States:	SGearRatio - Gear Ratio (ND)
Dimensions:	None
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Realtime Technologies, Inc.

Realtime Technologies Inc. (RTI) specializes in real time multibody vehicle dynamics, and graphical simulation and modeling. We offer simulation software applications, consulting, custom engineering, software, and hardware development. Realtime Technologies’ customer base includes international, government and private entities. RTI was founded in 1998.