| 摘要 |
PURPOSE: A gas leakage alarm system for a CNG(Compressed Natural Gas) vehicle is provided to block up the leakage of gas by automatically detecting the leakage of gas depending on the pressure change in a fuel tank. CONSTITUTION: A gas leakage alarm system for a CNG vehicle comprises a fuel tank(201) for storing CNG, a fuel supply pipe(202) for supplying CNG to an engine, a pressure sensor(203) for sensing the pressure in the fuel tank, a temperature sensor(204) for sensing the temperature in the fuel tank, an ECU(Electronic Control Unit)(205) connected with the pressure sensor and the temperature sensor, and an alarm unit(206) for deciding the leakage of CNG by the signal of the ECU and corresponding to the pressure and temperature in the fuel tank and alarming of the leakage of fuel.
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