Automotive suspension control system utilizing variable damping force shock absorber
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United States of America Patent
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-
Jun 11, 1996
Grant Date -
N/A
app pub date -
Dec 24, 1992
filing date -
Dec 26, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A suspension control system for an automotive vehicle is provided. This suspension control system comprises variable damping force shock absorbers and a control unit which controls the shock absorbers to assume damping force characteristics in a range between preselected higher and lower damping coefficients. The control unit is operable to provide a control parameter indicative of bouncing motion of a vehicle body based on sprung vertical speed to determine a damping coefficient against the bouncing motion. When the control parameter is greater than a threshold value, the damping coefficient is modified to a lower value, while when the control parameter is less than the threshold value, the damping coefficient is modified to a higher value. With this damping coefficient modification, the bouncing motion is suppressed effectively while assuring passenger comfort.
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