Fluid pressure type active suspension having variable performanc

Details Fluid pressure type active suspension having variable performanc Fluid pressure type active suspension having variable performanc

1990-08-30

1991-12-03

Rice, Kenneth R.

Land vehicles

Wheeled

Running gear

280 91, 180142, B60G 1126

Patent

active

050694758

ABSTRACT:
A fluid pressure type active suspension in a vehicle such as an automobile having a four wheel steering means, including a fluid pressure type actuator provided between the vehicle body and each wheel, working fluid supply and exhaust means for supplying and exhausting a working fluid to and from each actuator, vehicle height detection means for detecting vehicle height of a portion of the vehicle body corresponding to each wheel relative to the wheel, and a control means for controlling the working fluid supply and exhaust means according to control parameters including a vehicle height detected by the vehicle height detection means, wherein the control means is adapted to modify the control of the working fluid supply and exhaust means in accordance with whether a front to rear wheel steering angle ratio of the four wheel steering means is in a same phase region or an opposite phase region so that the vehicle height is controlled to be higher or lower or the rolling control is suppressed less or more according to whether the front to rear wheel steering angle ratio is in the opposite phase region or in the same phase region, respectively.

REFERENCES:
patent: 4717173 (1988-01-01), Sugasawa et al.
patent: 4789935 (1988-12-01), Buma et al.
patent: 4853860 (1989-08-01), Achenbach
patent: 4973080 (1990-11-01), Ikemoto et al.
patent: 4979115 (1990-12-01), Takahashi
patent: 4999777 (1991-12-01), Schussler et al.

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