Method for Precharging a Low-Pressure Accumulator of a Motor Vehicle Braking System
AssigneeRobert Bosch GmbH
InventorAlexander Bareiss
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method for pre-filling a low-pressure storage device (14) of a motor vehicle braking system (17), having a changeover valve (8), a hydraulic pump (9), an outlet valve (13), and a low-pressure storage device (14) situated in a suction line of the hydraulic pump (9). The low-pressure storage device (14) can be pre-filled in a particularly simple and low-noise manner if the actuation of the foot brake pedal (1) is monitored using a sensor mechanism and, when there is an actuation, the changeover valve (8) is closed in order to lock in the braking pressure acting on the wheel brake (11), and at least one of the outlet valves is opened in order to release the braking pressure into the low-pressure storage device (14).
Claims11
1-10. (canceled)
A method for pre-filling a low-pressure storage device of a motor vehicle brake system including a valve situated between a brake master cylinder and a wheel brake, an outlet valve situated after the wheel brake, and the low-pressure storage device situated in a suction line of a hydraulic pump, the method comprising:
- building up a braking pressure through an actuation of a foot brake pedal;
- closing the valve in order to lock-in a braking pressure acting on the wheel brake;
- and
- opening the outlet valve in order to release a braking pressure into the low-pressure storage device.
A braking system for a motor vehicle, comprising:
- a valve situated between a brake master cylinder and a wheel brake;
- an outlet valve situated after the wheel brake;
- a hydraulic pump;
- a low-pressure storage device situated in a suction line of the hydraulic pump;
- and
- a control device for controlling the hydraulic pump and the valves, wherein the control device controls a pre-filling of the low-pressure storage device in which an actuation of a foot brake pedal is recognized by a sensor mechanism, and, in the case of an actuation, the valve is closed in order to lock-in a braking pressure acting on the wheel brake, and the outlet valve is opened in order to release a braking pressure into the low-pressure storage device.
Dependencies are inferred from the claim text.