Patent ID: 8911028
Filing Date: 2014-12-16
Classification: B60T

Abstract:
1. A method for operating a hydraulic braking system ( 1 ) for motor vehicles having an electrically controllable pressure provision device ( 3 ), having a hydraulic cylinder and piston arrangement, the piston of which can be driven by means of an electric motor, a high-pressure accumulator ( 2 ), a hydraulic line ( 11 ) extending between the pressure provision device ( 3 ) and the high-pressure accumulator ( 2 ), an electrically controllable shutoff valve ( 4 ) arranged in the hydraulic line for establishing and interrupting a hydraulic connection between the pressure provision device and the high-pressure accumulator, wheel brakes ( 5 , 6 , 7 , 8 ), which can be supplied with pressure medium via the hydraulic line by means of at least one of the pressure provision device ( 3 ) and the high-pressure accumulator ( 2 ), and an electronic control and regulating unit ( 9 ) for actuating the electrically controllable pressure provision device ( 3 ) and the electrically controllable shutoff valve ( 4 ) so as to regulate a hydraulic pressure which is provided by at least one of the pressure provision device ( 3 ) and the high-pressure accumulator ( 2 ), comprising the step of, if a pressure buildup in the hydraulic line is carried out by activating the pressure provision device ( 3 ), connecting the high-pressure accumulator ( 2 ) only temporarily during the pressure buildup by at least partial opening of the shutoff valve ( 4 ).