LPG vehicle gas leak prevention device

摘要

The present invention relates to a gas leakage preventing device for LPG vehicle, the ignition switch 11, the crankshaft position sensor 12, the supplementary power supply 13 and the ignition coil (6) of the engine is connected, the ignition switch (11) When the crankshaft rotation signal of the crankshaft is received from the crankshaft position sensor 12 in the OFF state, the electronic control unit receives current from the supplemental power supply 13 and applies the ignition coil 6 to maintain the ignition state ( 10); And a fuel supply pipe 9 connected to the electronic control unit 10 and installed in the vaporizer 1 and extending from the vaporizer 1 to the mixer 3 as soon as the ignition switch 11 is turned OFF. Fuel supply blocking means for blocking the fuel supply (20); characterized in that it comprises, LPG remaining in the fuel supply line connected from the vaporizer to the mixer to prevent the leakage to the outside to prevent air pollution.