| 摘要 |
PCT No. PCT/EP88/00295 Sec. 371 Date Sep. 15, 1989 Sec. 102(e) Date Sep. 15, 1989 PCT Filed Apr. 8, 1988 PCT Pub. No. WO89/09701 PCT Pub. Date Oct. 19, 1989.A height adjustment system for a vehicle including a solenoid valve arrangement that controls air flow to and from an air spring of an air suspension arranged between a vehicle body and a wheel axle, a sensor unit for determining a height between the vehicle body and the wheel axle and a velocity of vertical movement of the vehicle body relative to the wheel axle, and a control unit that controls operation of the solenoid valve arrangement in accordance with the velocity of vertical movement of the vehicle body relative to the wheel axle as well as a comparison between threshold height values and the distance between the vehicle body and the wheel axle. The air suspension may also be provided with an oscillating damper of substantially constant damping characteristics, such as a shock absorber.
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