FUEL LEAK PROTECTION METHOD IN LIQUEFIED PETROLEUM INJECTION SYSTEM USING LIQUEFIED PETROLEUM GAS

摘要

A fuel leak protection method for a vehicle using an LPG liquid high pressure injection system is provided to prevent a fuel leakage due to the fuel leaked during soaking of the vehicle by interrupting a cut off solenoid valve when the fuel of an injector is leaked. A fuel leak protection method for a vehicle using an LPG liquid high pressure injection system includes the steps of: confirming whether a message is received from a can system(S103); confirming whether a battery voltage is over a minimum voltage for opening a cut off solenoid valve during a cranking operation according to the reception of the can message; confirming whether the cranking operation is started according to the existence of the voltage; and opening the cut off solenoid valve after the opening delay time of the cut off solenoid valve elapses according to the cranking operation(S104).