Robert Boschgmbh

Anatoly Malkin

Ralf Kinder

Timo Haible

Wadim Henning

Mike Huff

Sabrina Lutz

In order to test a function in a pressure generating module of a hydraulic vehicle power brake system, it is provided to generate a brake pressure using a power brake pressure generator and subsequently hydraulically to separate a pressure regulating module from the pressure generating module by closing connection valves or hydraulically to separate wheel brakes from the pressure generating module by closing inlet valves, so that no brake fluid flows into the wheel brakes during the function test, which would reduce the brake pressure in the pressure generating module and negatively affect or prevent the function test.

Method for testing a function in a hydraulic vehicle power brake system

A method for operating a hydraulic braking system, which includes at least one actuatable actuator for generating a hydraulic brake pressure using brake fluid. A first leakage loss of the brake fluid in the braking system is ascertained as a function of a volume of a pressure chamber of the actuator at a starting pressure at the beginning of a braking process and the volume of the pressure chamber when the starting pressure is reached at the conclusion of the braking process. A second leakage loss of the braking fluid is continuously calculated while the braking process is carried out. The first leakage loss is compared to the second leakage loss for the plausibility check after a braking process was carried out.

Method and control unit for operating a hydraulic braking system, braking system, and motor vehicle

A method for operating a brake system of a motor vehicle. The brake system includes a master brake cylinder operable by a user and a pressure generator driven by an electric motor, for generating a hydraulic system pressure, and includes at least one hydraulically operable friction brake. On the inlet side, the at least one friction brake is assigned a proportioning valve acted upon by the system pressure, to adjust a hydraulic actuating pressure for the friction brake. The pressure generator is given a setpoint value for carrying out a testing operation. The setpoint value is selected so as to be smoothed by a logistical growth function.

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Stuttgart, Germany

Anatoly Malkin