| 摘要 |
PURPOSE: A fuel shutoff device and method of an LPG vehicle is provided to prevent lowering of starting performance without waiting for a minute until residual fuel of a vaporizer is completely burned and the engine is stopped. CONSTITUTION: A fuel shutoff device and method of an LPG(Liquefied Petroleum Gas) vehicle comprises a vehicle motion state-detecting unit(100) of detecting the motion state of a vehicle changing according to a change of the motion state of a vehicle; an engine control unit(200); and a driving unit(300). The engine control unit outputs a predetermined control signal to receive a signal detected from the vehicle motion state-detecting unit, receives the state of a parking brake switch, neutral position of a gear lever, external temperature, the state of an ignition, and the angle of a crank, decides a state of engine idle state holding-condition satisfaction state if the ignition is off, performs off-control to a first and a second solenoid valve(310,320), outputs an ignition-off signal, and outputs a predetermined signal to perform off-control for engine control. The driving unit shuts off the first and second solenoid valve and delivers a predetermined radio signal of informing that ignition is normally off.
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