| 摘要 |
PURPOSE: A device for control air pressure of tire is provided to maintain the tire pressure depending on the operation state of a vehicle by automatically controlling the air pressure of tire. CONSTITUTION: A device for control air pressure of tire comprises air pressure sensors(9,10), discharge solenoid valves(11,12) for exhaustion, an air pump(13), an injecting solenoid valve and a control circuit. The air pressure sensor detects the pressure of a plurality of tires. The discharge solenoid valve discharges the air of a plurality of tires. The air pump generates the air injected in a plurality of tires. The injecting solenoid valve injects the air which is generated from the air pump to a plurality of tires. The control circuit controls is the discharge solenoid valve, the injecting solenoid valve and air pump according to the air pressure of the tire. The control circuit controls the air pressure of tire by the proper level.
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