Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1990-04-02
1990-10-16
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303119, B60T 832
Patent
active
049629751
ABSTRACT:
The invention relates to the braking of a motor vehicle. During periods when the anti-lock device is in operation, pressure pulses occur in the brake circuit. To prevent these pressure pulses from being transmitted to the master cylinder, a non-return valve (11) is arranged in the circuit so as to prevent any return of the brake fluid into the master cylinder during periods of anti-lock braking. The non-return valve (11) is closed as a result of the pressure of the fluid from the accumulator (24), itself fed by the pump (23) which is started up by the computer of the anti-lock device at the same time as the expansion of the brake fluid is controlled by the solenoid valve (16). At the end of the braking period when the petal (3) is released, the fluid in the brake circuit can return into the master cylinder via the line (28) and the non-return valve (12). The invention is used for eliminating pulses in the brake pedal during the periods when the anti-lock device is in operation.
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Bendix France
Butler Douglas C.
Decker Ken C.
Palguta Larry J.
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