FUEL SUPPLYING DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To prevent an increase in a tank inner pressure by limiting the generation of evaporated fuel in a fuel tank and to reduce costs by simplifying the piping of a fuel supplying system in an internal combustion engine fuel supplying device. SOLUTION: A low pressure pump P1 is provided in a fuel passage 23 for interconnecting a fuel injection valve 1 and a fuel tank 22 and a high pressure pump P2 is provided between the low pressure pump P1 and the fuel injection valve 1. A high pressure regulator R2 is provided in parallel with the fuel injection valve 1 or in the downstream of the injection valve in order to adjust a fuel supplying pressure to the fuel injection valve 1 to a set pressure and a high pressure return passage r2 for returning a superfluous fuel passing through the high pressure regulator R2 to a fuel passage 23 between the high pressure pump P2 and the low pressure pump P1 is provided.