| 摘要 |
PURPOSE: A system for controlling evaporative gas from fuel is provided to detect the leakage of evaporative gas using a low pressure sensor and a high pressure sensor. CONSTITUTION: A system for controlling evaporative gas from fuel comprises a fuel tank, a canister(20), an integrated tank sealing valve(100), pressure sensors(40,50) for low pressure and high pressure, and an electronic control unit. The integrated fuel tank sealing valve is formed by coupling the fuel tank sealing valve and the canister sealing valve. The pressure sensor for high pressure and low pressure measures the pressure inside the fuel tank. The electronic control unit diagnoses the leakage of the evaporative gas in the fuel according to the value from the pressure sensor for low pressure and high pressure during the stop of an engine.
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