Powertrain Component
Differential

  

Description:

 The differential component applies the gear ratio to the input torque Torque1 and splits the torque equally between Torque3 and Torque4.

Torque3 = Torque4 = Torque1*GearRatio/2

If the speed difference between Vel3 and Vel4 is greater than MinSpeedDiff an additional torque is applied:

Torque3 = Torque1/2 + TorqueTransfer * (Vel4-Vel3-MinSpeedDiff)
Torque4 = Torque1/2 - TorqueTransfer * (Vel4-Vel3-MinSpeedDiff)

The merged velocity Vel1 is calculated by averaging the input velocities and multiplying by the gear ratio.

Vel1=(Vel3+Vel4)*GearRatio/2

The positive direction of velocity and torque is arbitrary.
 
Inputs: SimRealVar Torque1 - Input Torque (Nm)
SimRealVar Vel3 - Input Angular Velocity (rad/s)
SimRealVar Vel4 - Input Angular Velocity (rad/s)
SimRealVar GearRatio - Gear Ratio (ND)
SimRealVar MinSpeedDiff - Minimum Speed Difference (rad/sec)
SimRealVar TorqueTransfer - Torque Transfer (Nm-s/rad)
 
Outputs: SimRealVar Torque3 - Split Torque (Nm)
SimRealVar Torque4 - Split Torque (Nm)
SimRealVar Vel1 - Merged Angular Velocity (rad/s)
 
States: None
 
Dimensions: None
 
 

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Realtime Technologies, Inc.
© Copyright 2004-2010 Realtime Technologies Inc. All rights reserved.

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.