Patent ID: 7341541
Filing Date: 2008-03-11
Classification: B60K,F16D,F16H,Y10T

Abstract:
1. A method to reduce backlash in a drive train of a four-wheel drive vehicle, the method comprising: receiving rotational parameters from sensors in the four-wheel drive vehicle; determining a torque reversal in the drive train based on the received rotational parameters; and sending a command signal to initiate engagement of a clutch pack in a transfer case of the drive train responsive to the determination; wherein when the torque reversal is greater in one of the front driveshaft of the drive train relative to the rear driveshaft of the drive train, or the rear driveshaft of the drive train relative to the front driveshaft of the drive train, the clutch pack engagement reduces the backlash in the drive train to backlash of the driveshaft with the smaller backlash.