Hydraulic anti-skid braking sytems for vehicles

Details Hydraulic anti-skid braking sytems for vehicles Hydraulic anti-skid braking sytems for vehicles

1985-03-01

1988-01-26

Kashnikow, Andres

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

188181A, 303117, B60T 842, B60T 848

Patent

active

047213469

ABSTRACT:
In an hydraulic anti-skid braking system of the pump and de-boost type the position of the de-boost piston in the bore is determined by a volume of fluid trapped in a space by a dump valve. The dump valve operates in conjunction with a restrictor which, at least at pressures above a pre-set level, restricts the rate of release of fluid from the space when the dump valve is open. Decreasing the flow rate of the dump valve decreases the time period for each anti-skid cycle. The pump no longer has to pressurize to maximum (brake) from zero which reduces the amount of energy which otherwise would have been consumed in the re-application mode. In addition the rate of release of fluid at pressures below the pre-set level can be increased which is of particular advantage when the vehicle is travelling over surfaces having low co-efficients of friction.

REFERENCES:
patent: 3843211 (1974-10-01), Ingram et al.
patent: 3918768 (1975-11-01), Farr
patent: 4422695 (1983-12-01), Farr
patent: 4457563 (1984-07-01), Farr

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