Anti-skid brake control system having spool valves

Details Anti-skid brake control system having spool valves Anti-skid brake control system having spool valves

1995-02-07

1997-10-21

Graham, Matthew C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

3031161, B60T 832

Patent

active

056789017

ABSTRACT:
An anti-skid brake system to supply brake fluid to first and second wheel brakes of an automobile. There are first and second control valves to receive brake fluid from a master cylinder, and first and second bypass valves to receive the bypass flow from the first and second control valves, respectively. A pump receives the bypass flow from the bypass valves in an anti-lock mode and recirculates the brake fluid in the system. There is a release valve that is responsive to fluid pressure levels of the first and second control valves to selectively connect the first and second control valves to the master cylinder, in a manner that with one of the control valves in its anti-lock mode and the other control valve in its normal operating mode, the pump delivers brake fluid toward the control valve which is isolated by the release valve.

REFERENCES:
patent: 4986612 (1991-01-01), Arkawa
patent: 5385395 (1995-01-01), Volz
patent: 5397175 (1995-03-01), Matsunaga et al.
patent: 5403078 (1995-04-01), Farr

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