Anti-lock hydraulic control device

Details Anti-lock hydraulic control device Anti-lock hydraulic control device

1993-08-16

1994-06-14

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

188349, 303 975, 303111, 3031164, B60T 832

Patent

active

053204239

ABSTRACT:
An anti-lock hydraulic control device is composed of a front-wheel brake and rear-wheel brake for effecting brake control through a hydraulic system which is connected with a master cylinder and circulates hydraulic fluid; a front-wheel side control valve and rear-wheel side control valve between the master cylinder and front-wheel brake, and master cylinder and rear-wheel brake respectively; a reserve between the front-wheel side control valve and rear-wheel side control valve; a proportioning valve between the master cylinder and rear-wheel side control valve; and a pump connected to the reserve and provided with a discharge opening connected between the proportioning valve and the rear-wheel control valve. When anti-lock control starts, the pump operates and discharges hydraulic fluid to the rear-wheel side control valve, thus increasing rear-wheel brake fluid pressure, and so avoiding the problem of insufficient braking power in the rear-brakes during anti-lock control, and increasing braking efficiency.

REFERENCES:
patent: 4740039 (1988-04-01), Hattwig
patent: 5163743 (1992-11-01), Leppek et al.
patent: 5167441 (1992-12-01), Schonlau et al.
patent: 5242216 (1993-09-01), Miyawaki et al.

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