Patent ID: 7255358

Claim:
An air suspension system for a vehicle, comprising: a first line provided between an air tank and an air spring; a first valve, an air drier, a compressor to discharge pneumatic air towards the air tank, a second valve, and an air spring-opening/closing valve, which are sequentially provided in the first line; and second and third lines provided between the first valve and the second valve, wherein when applying air pressure, air in the air tank is supplied from the air tank to the air spring through the first valve, the second line, the second valve, the compressor, the air drier, the first valve, the third line, the second valve, and the air spring-opening/closing valve, and when releasing the air pressure, air in the air spring is transmitted and then contained in the air tank through the air spring-opening/closing valve, the second valve, the compressor, the air drier, and the first valve.