| 摘要 |
A compressor (3) and a tank (5) are connected by a replenishment passage (6), and a first check valve (8) is provided between the ends of the replenishment passage (6). The tank (5) and air suspensions (1, 2) are connected by a supply and discharge passage (9), a supply and discharge switching valve (10) is provided between the ends of the supply and discharge passage (9), and suspension control valves (11, 12) are provided between the supply and discharge switching valve (10) and the air suspensions (1, 2). The supply and discharge switching valve (10) and the suction port (3C) of the compressor (3) are connected by an air discharge passage (13), and an air-discharge-passage opening and closing valve (14) is provided between the ends of the air discharge passage (13). To lower a vehicle height, air within the air suspensions (1, 2) is conducted to the suction port (3C) of the compressor (3) through the air discharge passage (13), compressed by the compressor (3), and then replenished into the tank (5). |
