Patent ID: 7197386
Filing Date: 2007-03-27
Classification: B60K,B60W

Abstract:
1. A control system for a vehicle with at least part-time four-wheel drive, having a control unit which detects or determines quantities proportional to wheel speeds of all wheels and a vehicle speed, and by means of which a driving torque of a drive unit can be variably distributed to primary driving wheels, which are permanently connected with the drive unit, and to secondary driving wheels which, if required, can be connected with the drive unit, wherein, for the distribution of the driving torque, a clutch torque of a transfer clutch arranged between the drive unit and the secondary driving wheels is set by the control unit, and the control unit is further developed such that the clutch torque is increased if a defined difference is detected between a wheel speed of a single wheel and the vehicle speed, or if a defined difference is detected between wheel speeds of wheels of only one vehicle side.