METHOD FOR INSPECTING THE LEAKAGE OF THE FUEL EVAPORATING GAS AND THE FUEL VAPOR PRESSURE

摘要

According to an embodiment of the present invention, the present invention is capable of improving the reliability of drive ability, the warm-up of engine temperatures, and the operation of a vehicle by preventing the use risk of similar gasoline by setting a normal steam pressure range of vehicle fuel since the temperature of steam pressure is corrected by attaching a temperature sensor to the inside of a fuel tank and using an evaporating gas leakage sensing system of On-Board Diagnostic System (OBD-II) attached to the vehicle. The method includes a step of forming negative pressure by reducing pressure of a fuel tank system to predetermined pressure (P).