Hydraulic anti-lock multicircuit brake system, for motor vehicle

Details Hydraulic anti-lock multicircuit brake system, for motor vehicle Hydraulic anti-lock multicircuit brake system, for motor vehicle

1991-09-16

1993-02-23

Oberleitner, Robert J.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

B60T 834

Patent

active

051884356

ABSTRACT:
A hydraulic brake system for motor vehicles equipped with an anti-lock and traction control device and with brake pressure reduction at the rear axle. The brake system has valve assemblies for brake pressure modulation, which are associated with brake lines, and a pump for pumping pressure fluid, drawn from wheel brakes, into a brake line. A bypass line beginning at the brake line and leading to the wheel brakes of the rear axle is equipped with spring-loaded check valves. On the inlet side, the pump is connected to the bypass line for aspirating pressure fluid from a master brake cylinder. On the inlet and outlet sides of the pump, there is one multiposition valve each in the bypass line and in the brake line, with switching positions for opening and blocking the applicable line. The two multiposition valves are in the open position when without current, while multiposition valves of the valve assemblies disposed toward the wheel brakes in the brake lines are switched to the blocking position when without current. The brake system is particularly suitable for motor vehicles, such as passenger cars and light utility vehicles.

REFERENCES:
patent: 4636009 (1987-01-01), Tsuru et al.
patent: 4824183 (1989-04-01), Uchida et al.

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