Land vehicles – Wheeled – Running gear
Patent
1990-02-28
1994-06-07
Rice, Kenneth R.
Land vehicles
Wheeled
Running gear
280703, 280840, B60G 1704
Patent
active
RE0346284
ABSTRACT:
In order to ensure riding comfort and driving stability in an automotive suspension system, the nature of the effect of the damping force generated by the suspension system is observed. When the damping characteristics of the suspension system are too hard, resulting in amplification of vibrations in the suspension system, the damping characteristics are softened to ensure satisfactory riding comfort. Therefore, according to the present invention, an automotive suspension system has variable damping characteristics which depend on the nature of the damping force produced in response to bounding and/or rebounding motion of the vehicle so as to optimize damping characteristics to achieve both riding comfort and driving stability. In the preferred embodiment, a suspension control system uses the vibration frequency of a sprung mass and the relative speed between the sprung mass and an unsprung mass as control parameters representing the nature of damping force.
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Fujishiro Takeshi
Kaneko Takanobu
Takahashi Sadahiro
Nissan Motor Company Limited
Rice Kenneth R.
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