Power plants – Pressure fluid source and motor – Pulsator
Patent
1984-06-26
1989-05-23
Look, Edward K.
Power plants
Pressure fluid source and motor
Pulsator
60418, 60431, 605471, 303 10, 303 11, F15B 700
Patent
active
048318264
ABSTRACT:
A hydraulic motor vehicle brake system with a master cylinder (61) and a hydraulic power booster (24) connected upstream of the master cylinder (61), in which a pressure medium pump (1) which may be driven by an electric motor is used for providing an auxiliary hydraulic energy. The drive of the pressure medium pump (1) may be switched on by a pressure accumulator (26) which in the unbraked operation of the automotive vehicle is permanently kept on a pressure level sufficient for an initial actuation of the brake. The pressure accumulator (26) is charged by means of a pressure control valve (7) in which a valve passage (15, 17) is operable by a hydraulic pressure in the booster chamber (23) of the power booster (24) such as to ensure that upon pressurization of the booster chamber (23) a connection will be locked between the pressure accumulator (26) and the power booster (24). The power booster (24) has a pedal-operable throttle valve, with the throttle valve being a double seat valve which in the brake's release position will lock a connection from the pump (1) to the booster chamber (23).
REFERENCES:
patent: 2945352 (1960-07-01), Stelzer
patent: 3712057 (1973-01-01), Aiki
patent: 3799300 (1974-03-01), Cochrane
patent: 4242867 (1981-01-01), Belart
patent: 4402554 (1983-09-01), Belart
patent: 4421361 (1983-12-01), Arikawa et al.
patent: 4477125 (1984-10-01), Belart
patent: 4490977 (1985-01-01), Fulmer
Belart Juan
Schuett Bernd
Stalheber Peter
Volkmar Werner
Alfred Teves GmbH
Look Edward K.
Raden James B.
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