Patent ID: 8567373

Claim:
A fuel supply apparatus, comprising: a fuel pump for supplying fuel reserved in a fuel tank to a fuel consumption unit; a pressure regulator for introducing therein the fuel to be supplied to the fuel consumption unit from the fuel pump and regulating the fuel to a set pressure, the pressure regulator being operative to change the set pressure of the fuel to a high set pressure and a low set pressure; and a set pressure changing unit for changing and controlling the set pressure of the pressure regulator into a desired set pressure selected from among the high set pressure and the low set pressure; the pressure regulator being operative by an operation fluid pressure to be introduced therein to regulate the fuel from the fuel pump to the high set pressure when the operation fluid pressure is lowered; the set pressure changing unit being operative to supply the operation fluid pressure to the pressure regulator based on the pressure of the fuel to be discharged from the fuel pump, and to allow the set pressure of the pressure regulator at the time of the fuel pump being stopped to be higher than the set pressure of the pressure regulator at the time of the fuel pump being operated.