| 摘要 |
PURPOSE: An improving device of an ignition performance in an LPI(Liquefied Petroleum Injection) vehicle and a method thereof are provided to prevent the fuel rarefaction by raising the fuel pressure and preventing the gasification of fuel. CONSTITUTION: A fuel tank(5) embeds a fuel pump in a fuel system to supply fuel to an injector(9) in a combustion chamber of an engine(2) to be connected with an intake system(1). A supply line(6) supplies the pumped fuel to the combustion chamber by connecting the fuel tank with the injector. A return line(7) returns the remaining fuel from the injector to the fuel tank after stopping the engine. A regulator(8) controls the fuel pressure at the supply or the returning of the fuel through an ECU(Electronic Control Unit)(4) at on/off of an ignition switch(3) by installing in the lines(6,7). A solenoid valve(10) raises the fuel pressure on the lines by installing in the return line and isolating the returning passage at the fuel supply through the ECU. Thereby, the reduction of the ignition performance by the fuel rarefaction is prevented by preventing the gasification of remaining fuel.
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