Brake control systems

Details Brake control systems Brake control systems

1997-12-23

1999-08-17

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

3031161, 3031191, 180197, B60T 832

Patent

active

059382961

ABSTRACT:
A brake control system includes in a main circuit connecting a master cylinder and a wheel cylinder a normally-open OUT-side gate valve and a fluid-pressure control valve comprising inlet and outlet valves. The system also includes a main pump for discharging brake fluid within a reservoir to the fluid-pressure control valve, and an auxiliary pump for discharging brake fluid to the suction side of the main pump. A normally-closed IN-side gate valve is arranged in an auxiliary suction circuit. A bypass circuit is arranged in parallel with the auxiliary pump, and a circulation solenoid valve is arranged therein. After finishing stabilizing control, a control unit opens the OUT-side gate valve and closes the IN-side gate valve, and opens the circulation solenoid valve during a predetermined period of time.

REFERENCES:
patent: 5015043 (1991-05-01), Resch
patent: 5407257 (1995-04-01), Iwata

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