A fuel supply device for a direct injection gasoline engine and start-up control method for a direct injection gasoline engine with the fuel supply device

摘要

A fuel supply device for a direct injection gasoline engine in which LPG is injected directly into a combustion chamber and a start control method for an LPDI engine with the fuel supply device, wherein the high pressure fuel pump receives fuel and compresses at a higher pressure than a pressure with which fuel has been supplied, wherein the high-pressure fuel rail stores and supplies fuel to a direct injector that injects fuel directly into a combustion chamber, the return line being connected to the supply line by the high-pressure fuel pump to form a low-pressure line, wherein an excess amount of fuel, the from the fuel tank to the high pressure fuel pump is allowed to return to the fuel tank, and wherein a first valve is disposed on the return line to control the flow rate of returning fuel.