Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1988-04-15
1989-05-23
Kashnikow, Andres
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
60591, 303113, 303115, 303119, B60T 1310, B60T 1500
Patent
active
048324175
ABSTRACT:
A brake system having a master brake cylinder with at least one brake chamber, for at least one brake circuit, and a brake booster. The brake booster communicates via a servo pressure line with a reservoir or a pump for supplying pressure fluid, and a pressure reduction valve is incorporated into the servo pressure line. This pressure reduction valve has a connection on the other end, via a pressure line, to at least the one brake circuit. The pressure reduction valve can assume three switching positions. In a first position at normal brake pressure, the servo pressure line is open between the brake booster and the reservoir and/or pump. If a predetermined pressure is exceeded, the servo pressure line is closed, in a second position. If a further threshold pressure value is also exceeded, then the servo pressure line is connected to a return line, so that the brake booster can be bled.
REFERENCES:
patent: 3877756 (1975-04-01), Inada et al.
patent: 4641894 (1987-02-01), Belart
Kehl Georg
Siegel Heinz
Graham Matthew C.
Greigg Edwin E.
Kashnikow Andres
Robert & Bosch GmbH
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