Hydraulic brake circuit for motor vehicle, having a dual circuit

Details Hydraulic brake circuit for motor vehicle, having a dual circuit Hydraulic brake circuit for motor vehicle, having a dual circuit

1988-08-18

1989-08-01

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303 10, 303 92, 303116, 303119, 303 842, 303111, 188151A, B60T 826, B60T 1718

Patent

active

048529524

ABSTRACT:
The circuit according to the invention is provided with a wheel anti-lock device of the type with independent control of the front wheels and control of the back wheel brakes by way of the pressure in the brake associated with the back wheel having the lowest resistance to skid. It comprises a safety device protecting the normal functioning of the circuit against escapes from the release valves (18, 18', 18") of the isolation-release electrovalves (11, 11', 11") and against the failure of a single pump (28) which resupplies the circuit directly from the reservoir (3) of the tandem master cylinder (2). A pressure regulator (7) avoids reactions on the brake pedal (2). The circuit may be applied to an anti-locking brake circuit having increased compactness and reliability.

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patent: 4779935 (1988-10-01), Kuwana et al.
patent: 4796957 (1989-01-01), Wakata et al.

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