Control system in a four-wheel-drive motor vehicle and method for control

A control system in a four-wheel-drive motor vehicle for distributing drive forces at least of a drive of the motor vehicle to wheels of first and second axles of the motor vehicle, comprising:

• a drive force distribution unit for distributing the drive forces to the first and second axles;
• rotational speed sensors for sensing a rotational speed of the first and second axles and/or of the wheels of the motor vehicle,
• a master control unit which is connected to a distribution control unit and to the rotational speed sensors and to a vehicle communication system,
• wherein the distribution control unit is mounted on the drive force distribution unit and performs adjustment both to a setpoint torque and to a setpoint rotational speed, and in doing so determines a transmission ratio to the drive forces which are to be distributed to the first and second axles as a function of travel and in a switchable fashion, wherein the transmission ratio is determined on the basis of a ratio between an actual torque and the setpoint torque when operating in a torque control mode or between the rotational speed and the setpoint rotational speed when operating in rotation rate control mode.