Control system for four-wheel-driven motor vehicle, has control unit and control device designed such that coupling torque is increased when pitch of vehicle does not exceed preset pitch threshold value during application of brake signal

摘要

The system has a control unit (8) and an auxiliary control device (10) detecting or determining speeds of wheels and/or a motor vehicle speed (Vfzg). A coupling torque (Mksoll) of a transmission clutch (1) that is arranged between a drive unit (9) and front wheels (4, 5) is adjusted by the control unit and device. The control unit and device are designed such that the coupling torque is increased when a pitch (N) of the vehicle does not exceed a preset pitch threshold value, and the vehicle speed falls below a speed threshold value during application of a brake signal (B).