| 摘要 |
PURPOSE:To improve the posture-retaining performance of an automobile, by providing automobile height sensors for the air suspension units of all wheels and controlling the wheels independently of one another and by effecting air feed before air discharge when air feed/discharge signals are produced for plural wheels. CONSTITUTION:The ascent or descent signals of automobile height sensors for air suspension units A-D, which last longer than a time set by a timer T1, are entered into a controller 5. When the ascent signals are entered into the controller 5, the solenoid valve L1 of a reserve tank 3 is opened and the ascent signals are transmitted through OR circuits OR3-OR6 to open suspension air feed/discharge solenoid valves L3-L6. When the descent signals are entered into the controller 5, a solenoid valve L2 is opened. When the ascent and the descent signals are simultaneously generated, the ascent signal is applied prior to the descent signal by AND circuits AND7-AND10 to cause downward displacement after upward displacement. A proper posture is thus always maintained. |
