Control device for an at least partially four-wheel-driven motor vehicle

A control device for an at least partially four-wheel-driven motor vehicle, having a control unit which variably distributes driving torque of a drive unit as a function of operating conditions to primary driving wheels, which are permanently connected with the drive unit, and to secondary driving wheels which, if required, can be connected by way of a transfer clutch with the drive unit, wherein the control unit determines a desired clutch torque which is to be set by an actuator device at the transfer clutch;

• wherein the vehicle speed is an operating condition;
• wherein, when the desired clutch torque is determined, at least one defined high-speed range is taken into account:
• wherein a speed-range-related clutch torque assigned to the defined high-speed range is defined as a maximally permissible limit torque;
• and
• wherein a differentiation is made between a defined speed-related starting range, a defined speed-related normal range and the defined high-speed range, and wherein a speed-range-related clutch torque assigned to the starting range, a speed-range-related clutch torque assigned to the normal range and a speed-range-related clutch torque assigned to the high-speed range are defined.