CONTROL DEVICE FOR POSTURE OF VEHICLE

Japanese Patent JPS6478911

A

PURPOSE:To rapidly cope with the occurrence of abnormality by operating the output liquid pressure of a pressure control valve which is necessary for obtaining the target condition of a vehicle posture and comparing the operated value with an actual output liquid pressure to detect the abnormality of the pressure control valve. CONSTITUTION:Various input informations such as the loading of goods, acceleration/ deceleration, cornering, etc., are inputted into a controller 2, and the output liquid pressure of a pressure control valve 3 which is necessary for obtaining the defined target condition of a vehicle is operated by a posture control operating means 6 to operate a posture variable means 1 via a normal time signal generating means 8 and the pressure control valve 3. The actual output liquid pressure from the pressure control valve 3 is compared with a target output liquid pressure by an abnormality judging means 7 and, judging to be abnormal when the difference is above a defined valve, an abnormality signal is outputted from a generating means 9 to forcedly control to be a defined pressure by means of a safety mechanism 4, while similarly controlling the output liquid pressure of the other normal pressure control valve to obtain a balanced posture. Thereby, it is possible to rapidly judge and cope with the abnormality of a pressure control valve.

KOMATSU KOICHI
YOKOTA TADAHARU

JP23669687A

March 24, 1989

September 21, 1987

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ATSUGI MOTOR PARTS CO LTD

B60G17/00; B60G17/015; B60G17/056; G05B9/02; (IPC1-7): B60G17/00; G05B9/02; G05D1/08

Yoshinori Hirata (1 person outside)

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