VARIABLE DAMPING FORCE TYPE HYDRAULIC SHOCK ABSORBER

Japanese Patent JPH01266014

A

PURPOSE:To make the riding comfortableness of a car compatible with its travelling steadiness even against continuous vibration by determining the rate of variation in hydraulic pressure on the each hydraulic pressure on compression and elongation sides in a variable damping force type shock absorber, and minutely varying the damping force according to the above-mentioned rate of variation. CONSTITUTION:Detecting means (a), (b) detect each hydraulic pressure on compression and elongation sides in a variable damping force type shook absorber respectively. Each output of the means (a), (b) is inputted into a controlling means C, which determines the rate of variation in the hydraulic pressure, and then computes control value to make the shock absorber turn into a fixed high damping force when the rate of variation has attained extreme value and a fixed low damping force when the rate of variation has lowered to a fixed value. After that, operating means (d), (e) vary the each damping force on the compression and elongation sides in the shock absorber according to the output of the controlling means C respectively. Thus the damping force can be minutely varied to make the riding comfortableness of a car compatible with its travelling steadiness even against continuous vibration.

JPH0577629	FLUID PRESSURE TYPE ACTIVE SUSPENSION
JP4834035	Role control system

KAKIZAKI SHINOBU
YAMAOKA FUMIYUKI
KIKUSHIMA SHIGERU
EMURA JUNICHI

JP9280088A

October 24, 1989

April 14, 1988

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ATSUGI UNISIA CORP

B60G17/015; B60G17/018; B60G17/019; F16F9/50; (IPC1-7): B60G17/10; F16F9/50

Teruo Aoki

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