Anti-lock hydraulic brake system with hydraulically controlled i

Details Anti-lock hydraulic brake system with hydraulically controlled i Anti-lock hydraulic brake system with hydraulically controlled i

1990-10-05

1992-07-14

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303113TR, 303DIG1, B60T 840, B60T 1370

Patent

active

051297140

ABSTRACT:
An anti-lock hydraulic brake system is provided which includes a master brake cylinder (2) and a pump (16) and an inlet valve (12) and an outlet valve (14). The inlet valve (12) is a minimum element whose control compartments (12, 22) are interconnected through a throttle (19). Depending on the position of a piston (20), either the brake line (8) or the return line (13) is opened. The pump (16) feeds the brake lines during a brake slip control operation. When the outlet valve (14) is opened, a pressure gradient is caused at the throttle (19) which results in that the operating piston (20) is displaced. As a result, the brake line (8) is closed and the return line (13) is opened, thereby permitting pressure fluid to discharge from the wheel brake (10) into the supply reservoir (15).

REFERENCES:
patent: 4715666 (1987-12-01), Farr
patent: 4940295 (1990-07-01), Adachi et al.
patent: 4964680 (1990-10-01), Nokubo et al.

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