Method and apparatus for pressure control

Details Method and apparatus for pressure control Method and apparatus for pressure control

1994-04-21

1995-10-03

Oberleitner, Robert J.

Fluid-pressure and analogous brake systems

Speed-controlled

Pulse frequency or time period controlling pressure rebuild

303159, 36442602, B60T 858

Patent

active

054546290

ABSTRACT:
Methods for brake pressure control in a vehicular antilock brake system wherein brake pressure is restored to within a window of peak brake pressure after a reduction in pressure in response to a forced departure during vehicle braking. In a preferred embodiment, the pressure reduction is adaptively controlled. The vehicle has a plurality of wheels and each wheel has brake. The method includes increasing brake pressure at a wheel so as to attain a prereduction peak brake pressure, and initiating a pressure reduction mode of operation wherein brake fluid flows from the brake of the wheel. The method also includes restoring the brake pressure at the wheel to the desired brake pressure after termination of the pressure reduction mode of operation without making actual brake pressure measurements.

REFERENCES:
patent: 4209203 (1980-06-01), Brearly
patent: 4985839 (1991-01-01), Dominke
patent: 5150299 (1992-09-01), Fujioka

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