Method for operating a brake system of a motor vehicle, brake system, motor vehicle
AssigneeRobert Bosch GmbH
InventorsAndreas Reize, Dino Harrer, Stefan Epple
Life of this patent
Estimating the term…
Abstract
A method is provided for operating a motor vehicle brake system that includes an actuatable brake master cylinder, a hydraulic brake booster, and at least one brake circuit that has at least one hydraulically actuatable wheel brake and at least one hydraulic-pressure generator driven by electric motor. The method includes monitoring a state of actuation of the brake master cylinder is monitored, and, upon detecting a maximum state of actuation, activating the hydraulic-pressure generator to increase the hydraulic pressure adjusted by the brake master cylinder in the brake circuit.
Claims16
A method for operating a brake system of a motor vehicle, the brake system comprising an actuatable brake master cylinder, a hydraulic brake booster, and at least one brake circuit that each includes at least one hydraulically actuatable wheel brake and at least one hydraulic-pressure generator driven by an electric motor, the method comprising:
- monitoring a state of actuation of the brake master cylinder;
- and
- for each of the at least one brake circuit, upon detecting a maximum of the state of actuation, activating the respective hydraulic-pressure generator of the brake circuit to increase a hydraulic pressure adjusted by the brake master cylinder in the respective brake circuit;
- wherein the method includes either or both of the following features (a)-(b):
- (a) the maximum of the state of actuation, upon detection of which the activating of the respective hydraulic-pressure generator of the brake circuit is performed, is a maximum extension of a piston located in the brake master cylinder;
- and
- (b) the respective hydraulic-pressure generator at least one of:
- (i) is separate from the brake booster;
- (ii) is located in a line downstream of an outlet from a fluid chamber of the brake master cylinder;
- and
- (iii) includes a hydraulic pump, with a pressure accumulator of the brake system being arranged at a suction side of the hydraulic pump.
A brake system for a motor vehicle, the brake system comprising:
- an actuatable brake master cylinder;
- a hydraulic brake booster;
- at least one brake circuit that each includes at least one hydraulically actuatable wheel brake;
- and
- a control unit, wherein:
- the control unit is configured to:
- monitor a state of actuation of the brake master cylinder;
- and
- for each of the at least one brake circuit, upon detecting a maximum of the state of actuation, activate a respective hydraulic-pressure generator of the brake circuit to increase a hydraulic pressure adjusted by the brake master cylinder in the respective brake circuit;
- and
- the brake system includes either or both of the following features (a)-(b):
- (a) the maximum of the state of actuation, upon detection of which the activation of the respective hydraulic-pressure generator of the brake circuit is performed, is a maximum extension of a piston located in the brake master cylinder;
- and
- (b) the respective hydraulic-pressure generator at least one of:
- (i) is separate from the brake booster;
- (ii) is located in a line downstream of an outlet from a fluid chamber of the brake master cylinder;
- and
- (iii) includes a hydraulic pump, with the brake system further comprising a pressure accumulator arranged at a suction side of the hydraulic pump.
A motor vehicle comprising a brake system, the brake system comprising:
- an actuatable brake master cylinder;
- a hydraulic brake booster;
- at least one brake circuit that each includes at least one hydraulically actuatable wheel brake;
- and
- a control unit, wherein:
- the control unit is configured to:
- monitor a state of actuation of the brake master cylinder;
- and
- for each of the at least one brake circuit, upon detecting a maximum of the state of actuation, activate a respective hydraulic-pressure generator of the brake circuit to increase a hydraulic pressure adjusted by the brake master cylinder in the respective brake circuit;
- and
- the brake system includes either or both of the following features (a)-(b):
- (a) the maximum of the state of actuation, upon detection of which the activation of the respective hydraulic-pressure generator of the brake circuit is performed, is a maximum extension of a piston located in the brake master cylinder;
- and
- (b) the respective hydraulic-pressure generator at least one of:
- (i) is separate from the brake booster;
- (ii) is located in a line downstream of an outlet from a fluid chamber of the brake master cylinder;
- and
- (iii) includes a hydraulic pump, with the brake system further comprising a pressure accumulator arranged at a suction side of the hydraulic pump.
Dependencies are inferred from the claim text.