| 摘要 |
PURPOSE: A solenoid unit for an LPG(Liquified Petroleum Gas) vehicle is provided to prevent reverse flow of fuel by mounting a reverse flow preventing valve, thereby preventing the leakage of the LPG and the fire due to the LPG leakage even tubes are damaged while a vehicle is running. CONSTITUTION: A solenoid unit for an LPG vehicle includes a block formed with a first oil channel(61) for passing liquid-phase fuel, a second oil channel(62) communicated with the first oil channel for passing gas-phase fuel, and a third oil channel(63) formed at a side where the first and second oil channels meet together and connected to a vaporizer, liquid-phase and gas-phase filter parts mounted at a side of the block to be communicated to the first to third oil channels for filtering impurities in the fuel, liquid-phase and gas-phase solenoid parts mounted at the other side of the block to be communicated with the first to third oil channels for blocking off or passing the flow of fuel, and a reverse flow preventing valve(70) mounted at a side of the block on the first or second oil channel for preventing the fuel of the first and second oil channels from reversely flowing toward the second and first oil channels, wherein the reverse flow preventing valve includes a housing(71) formed with channels(72) communicated with the first to third oil channels and a ball element(73) mounted in the channels for selecting either first or second oil channel.
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