Importance

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Abstract

For the control of the drive slip of a motor vehicle a first rotation rate sensor produces a first rotation rate signal corresponding to the rotation rate of the driven wheel or the output rotation rate of the change-speed gear. A second rotation rate sensor generates a second rotation rate signal corresponding to the rotation rate of a non-driven wheel. The friction clutch of the motor vehicle is engageable and disengageable through a controllable servo drive, and a control system controls the clutch in the release direction when the first rotation rate signal represents a rotation rate higher by at least a pre-determined difference value than the second rotation rate signal. The control system controls the clutch in the engagement direction when the rotation rates represented by the first and the second rotation rate signals differ by less than the pre-determined difference value. In order that the drive slip may be controlled even in movement-starting situations in which one of the drive wheels is stationary, a controllable blocking differential gear can be provided. The rotation rate of the internal combustion engine is controlled by a control system so that it does not exceed a pre-determined rotation rate value during the occurrence of the drive slip condition.

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First Claim