Suspension control system

Details Suspension control system Suspension control system

1990-09-18

1992-02-25

Marmor, Charles A.

Land vehicles

Wheeled

Running gear

280709, 280714, 13759612, B60G 1126

Patent

active

050907263

ABSTRACT:
A suspension control system for controlling the attitude of a vehicle has a hydraulic fluid supply source mechanism connected to a suspension unit of the vehicle through a hydraulic fluid supplying and discharging device for controlling the supply and discharge of hydraulic fluid to and from the suspension unit. The hydraulic fluid supply source mechanism includes a pump and a reservoir tank. The hydraulic fluid supply source mechanism further includes an unload line connecting a discharging port of the pump to the reservoir tank and an unload valve disposed in the unload line. The unload valve has an electromagnetic proportional valve and is controlled such that the current to be supplied thereto gradually increases and decreases when the valve is opened and closed, respectively.

REFERENCES:
patent: 4202250 (1980-05-01), Zeuner et al.
patent: 4276810 (1981-07-01), Zeuner et al.
patent: 4345736 (1982-08-01), Zeuner et al.
patent: 4658705 (1987-04-01), Maeda
patent: 4861068 (1989-08-01), McCabe

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