Importance

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Abstract

A control device for operating a road-coupled all-wheel drive vehicle, includes at least one electronic control unit, at least one first electric drive motor as a primary motor assigned to a primary axle and at least one second electric drive motor as a secondary motor assigned to a secondary axle. The control unit has a torque-limiting module which, if an expected change of the all-wheel drive factor is detected which can lead to a transition from single-axle operation to dual-axle operation on the basis of a defined signal that runs ahead the filtered driver's request signal, the torque limits for the individual target torques of the electric drive motors can be preset in a sudden manner according to the predetermined changed all-wheel drive factor before the individual target torques per se are set.

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First Claim