Patent ID: 6019439
Filing Date: 2000-02-01
Classification: B60T

Abstract:
A method of operating an anti-lock automotive vehicle brake system for driving stability control and/or traction slip control which includes a pneumatic brake force booster that is operable irrespective of the driver's wish and a master brake cylinder connected downstream of the brake force booster and having its pressure chambers connected to wheel brakes associated with the individual vehicle wheels by way of an ABS hydraulic unit including return pumps and low-pressure accumulators, wherein, upon commencement of the control, the brake force booster has achieved its maximum attainable boosting force irrespective of the driver's wish, and the desired wheel braking pressures are adjusted by way of the ABS hydraulic unit, wherein, at the end of the control, the independent actuation of the brake force booster will be deactivated only after the vacuum volume of the brake force booster has been reset to the value it had at the commencement of the control by returning the pressure fluid discharged from the wheel brakes to the low-pressure accumulators.