System for controlling active suspensions of a vehicle

Details System for controlling active suspensions of a vehicle System for controlling active suspensions of a vehicle

1990-06-18

1992-09-01

Chin, Gary

Boots, shoes, and leggings

280707, 280840, B60G 1700

Patent

active

051445590

ABSTRACT:
In a system for controlling active suspensions of a motor vehicle, having fluid suspensions for the respective wheels, a lateral acceleration sensor, control valves for the respective suspensions, and a controller for adjusting the control valves to charge and discharge a fluid into and out of the fluid suspensions so as to control the vehicle attitude, a shut-off valve is provided between each control valve and each fluid suspension. The shut-off valve is normally open to enable the control of the vehicle attitude in an active state. When the detected lateral acceleration of the vehicle during a turn exceeds a set reference lateral acceleration, an active-passive changeover circuit delivers a shut-off signal to each shut-off valve thereby to close the shut-off valve, whereby all the fluid suspensions are sealed so that the suspension system becomes a passive state. This enables the elimination of the excessive peformance of the active suspension system and makes the suspension units smaller and less costly, reducing energy consumption.

REFERENCES:
patent: 4999777 (1991-03-01), Schussler et al.
patent: 5015009 (1991-05-01), Ohyama et al.
patent: 5033770 (1991-07-01), Kamimura et al.
patent: 5042833 (1991-08-01), Kawabata
patent: 5042834 (1991-08-01), Yonekawa et al.
patent: 5044661 (1991-09-01), Kawabata
patent: 5044662 (1991-09-01), Kawabata
patent: 5066041 (1991-11-01), Kindermann et al.
patent: 5080392 (1992-01-01), Bazergui

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