Land vehicles – Wheeled – Running gear
Patent
1991-03-20
1992-11-03
Rice, Kenneth R.
Land vehicles
Wheeled
Running gear
280714, B60G 1126
Patent
active
051601621
ABSTRACT:
An automotive shock absorber producing a variable damping force. The absorber comprises a cylinder, a piston slidably fitted in the cylinder, two hydraulic chambers partitioned from each other by the piston inside the cylinder, a passage permitting the two chambers to communicate with each other, a rotary valve capable of varying the area of the passage, an acceleration sensor fitted in the cylinder, and an electronic control unit (ECU). The ECU controls the rotary valve according to the acceleration detected by the sensor which includes a vibrating diaphragm and a piezoelectric device.
REFERENCES:
patent: 4880086 (1989-11-01), Knecht et al.
patent: 4936423 (1990-06-01), Karnopp
patent: 4973854 (1990-11-01), Hummel
Aoyama Mutsuro
Hirao Kouji
Mouri Naoki
Aisin Seiki Kabushiki Kaisha
Rice Kenneth R.
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