Active suspension system with hydraulic circuit having line pres

Details Active suspension system with hydraulic circuit having line pres Active suspension system with hydraulic circuit having line pres

1990-03-27

1991-12-31

Rice, Kenneth R.

Land vehicles

Wheeled

Running gear

280709, B60G 2106

Patent

active

050766066

ABSTRACT:
An active suspension system includes a hydraulic circuit associated with a pressure control valve for adjusting fluid pressure in a working chamber of an active cylinder. A variable orifice is provided between a control portion of the pressure control valve and the working chamber. The variable orifice is operated to provide a first full path area while a line pressure in a supply line for feeding pressurized fluid to said pressure control valve is higher than a predetermined pressure level and a second restricted path area when the line pressure is lower that the predetermined level.

REFERENCES:
patent: 4702490 (1987-10-01), Yamaguchi et al.
patent: 4848790 (1989-07-01), Fukunaga
patent: 4865348 (1989-09-01), Hano
patent: 4903983 (1990-02-01), Fukushima

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