Patent ID: 8857414

Claim:
A vehicle fuel supply system comprising: a flange mounted in the upper opening of a fuel tank; a fuel pump that takes in a fuel in the fuel tank through a strainer, boosts the pressure of the fuel in a pump flow path provided in the fuel pump, and discharges a pressurized fuel; a high-pressure filter that filters the fuel that has been discharged from the fuel pump; a pressure regulator that maintains within a predetermined range the pressure of the fuel that has been filtered by the high-pressure filter; a vapor discharge outlet that is provided in the pump flow path, has an opening at an outer surface of the bottom portion of the fuel pump, and discharges a vapor in the pump flow path to the fuel in the fuel tank through the opening; and a member that prevents the fuel in the fuel tank from flowing into the pump flow path when pressure loss of a strainer increases, wherein the member is provided at the outer surface of the bottom portion of the fuel pump, and has a vapor discharge outlet occlusion unit, and the vapor discharge outlet occlusion unit occludes the opening of the vapor discharge outlet when pressure loss of the strainer increases.