| 摘要 |
PURPOSE:To secure a proper suspension function all the time irrespective of a variation in a road state by controlling the feed and exhaust of working fluid to a suspension on the basis of spring vertical acceleration in the suspension and springing and unsprung vertical relative displacement. CONSTITUTION:An air suspension unit 1 is installed between a body side member 2 and an axle support member 3, and an auxiliary damper 1a is installed in this unit 1. And, in the unit 1, there are provided with a sensor 4, which detects relative displacement in both vertical directions between both these members 2 and 3, and another sensor 5 which detects vertical acceleration of a car body, and each detection signal is inputted into a control unit 6. On the other hand, there is provided with a valve 7 which controls suction and exhaust to the unit 1, while each of high and low pressure air tanks 8 and 9 is interconnected to the unit 1 via this valve 7. And, on the basis of these detection signals, suction-exhaust quantity to the unit 1 is calculated, and the valve 7 is controlled for its opening or closing according to this calculated result. |
