Control valve for vehicle anti-lock brake system

Details Control valve for vehicle anti-lock brake system Control valve for vehicle anti-lock brake system

1987-05-22

1989-05-09

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

188181R, 303 61, 303 68, 303119, 303DIG4, 303110, B60T 858

Patent

active

048283355

ABSTRACT:
A control valve for an anti-lock brake system includes a one-piece valve body having an inlet opening in one end and an outlet opening in an opposite end. The valve body is provided with four other openings extending into the body and defining separate associated chambers for respectively receiving an isolation valve assembly, a pressure differential switch assembly, a dump valve assembly and an accumulator assembly. The inlet, outlet, and the four internal chambers are connected by appropriate internal passageways. The control valve is used to selectively hold, dump, or reapply brake fluid pressure to selected wheel brakes to prevent lock-up of the associated wheels.

REFERENCES:
patent: 4668023 (1987-05-01), Every et al.
patent: 4673226 (1987-06-01), Every et al.

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