Active suspension system with fail-safe system capable of automa

Details Active suspension system with fail-safe system capable of automa Active suspension system with fail-safe system capable of automa

1990-08-30

1991-08-27

Rice, Kenneth R.

Land vehicles

Wheeled

Running gear

36442405, B60G 1126

Patent

active

050428330

ABSTRACT:
An active suspension system is provided with a fail detector for detecting failure of control system which includes sensors, control unit, control valves and so forth. Fail-safe operation is taken place by closing a fluid circuit across a working chamber in a suspension system disposed between a vehicular body and a road wheel and a pressure control valve for adjusting the fluid pressure in the working chamber, and by adjusting the fluid pressure in the closed circuit substantially at a predetermined neutral pressure. The system further includes a vehicular driving condition monitor for monitoring vehicular driving condition. When faulty condition of the control system is cured or terminated, active suspension control is resumed at a timing when the vehicular driving condition monitor detects a predetermined vehicular driving condition stable enough for permitting resumption of active suspension control.

REFERENCES:
patent: 4821191 (1989-04-01), Ikemoto et al.
patent: 4827416 (1989-05-01), Kawagoe
patent: 4830397 (1989-05-01), Watanabe et al.
patent: 4852906 (1989-08-01), Buma et al.

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