Hydraulic brake system

Details Hydraulic brake system Hydraulic brake system

1985-05-23

1987-03-03

Reger, Duane A.

Fluid-pressure and analogous brake systems

Pipeless valves

303 6C, B60T 826

Patent

active

046471146

ABSTRACT:
A hydraulic brake system for automotive vehicles comprises a master cylinder (4) with at least two working chambers (3,5) and comprising at least two brake circuits. A first brake circuit is in constant hydraulic communication with a first working chamber (3) of the master cylinder (4), while a second brake circuit is connected to the second working chamber (5) of the master cylinder (4). A pressure control valve (1) is inserted into the connection between the working chamber (5) and the second brake circuit, the valve enabling to take influence on the pressure in the second brake circuit in a predeterminable fashion. The pressure control valve (1) is switchable by a slip monitoring electronics (62) so that braking pressure control in the second brake circuit will take place exclusively in the event of failure of the brake slip control apparatus. Thereby, the pressure variation in the wheel brakes, which is performed in a known fashion by suitable change-over of solenoid valves, will not be influenced negatively by the pressure control unit (1) when the brake slip control apparatus is intact.

REFERENCES:
patent: 4494801 (1985-01-01), Ohmori et al.
patent: 4499543 (1985-02-01), Matsuda

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