Vehicle anti-lock braking system wherein output end of pump pass

Details Vehicle anti-lock braking system wherein output end of pump pass Vehicle anti-lock braking system wherein output end of pump pass

1995-02-08

1996-07-23

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

188349, 3031154, 3031161, 3031191, 303 975, B60T 832, B60T 862

Patent

active

055383343

ABSTRACT:
A vehicle anti-lock braking system having X-crossed two pressure application sub-systems connected to respective independent chambers of a master cylinder, each sub-system including a normally-open first shut-off valve in a front brake cylinder passage between the master cylinder and a front wheel brake cylinder, a series connection of a normally-open second shut-off valve and a proportioning valve disposed in a portion of a rear brake cylinder passage connected to the front brake cylinder passage and a rear wheel brake cylinder, a normally-closed third shut-off valve in a reservoir passage connected to the rear brake cylinder passage and a reservoir, a pump in a pump passage which is connected at one end to the reservoir and the other end to a portion of the rear brake cylinder passage between the proportioning valve and the rear wheel brake cylinder, and a controller for controlling the three shut-off valves.

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