Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1990-08-01
1993-10-26
Graham, Matthew C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
B60T 832
Patent
active
052559637
ABSTRACT:
A known hydraulic vehicle brake system has an anti-skid valve assembly. By this assembly, the at least one wheel brake can be temporarily disconnected from the master brake cylinder and connected to one inlet of a return pump, which furnishes the quantities of pressure fluid flowing out of the wheel brakes both to a damper chamber and, via a damper throttle, to the master brake cylinder and/or the at least one wheel brake. The disadvantage is that all of the pressure fluid pumped by the return pump can sometimes reach the master brake cylinder, disagreeably moving the brake pedal in the direction of its outset position. This can annoy a driver and should be avoided. The improved vehicle brake system has a valve, which in anti-skid operation can be blocked, located between the damper throttle and the master brake cylinder and also has a bypass throttle bypassing the valve. As a result, during anti-skid operation, the brake pedal is not displaced to such an annoying extent.
REFERENCES:
patent: 3866983 (1975-02-01), Kondo
patent: 4027924 (1977-06-01), Kondo
patent: 4395073 (1983-07-01), Arikawa et al.
patent: 4640558 (1987-02-01), Nomura et al.
Altmann Rainer
Fees Hans-Joerg
Gutzeit Reinhard
Hellmann Harald
Jonner Wolf-Dieter
Graham Matthew C.
Greigg Edwin E.
Greigg Ronald E.
Robert & Bosch GmbH
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