FUEL SUPPLY DEVICE

A fuel supply apparatus is designed to secure a high fuel pressure to enhance starting operation efficiency and to respond the requirements of low fuel consumption and power saving at the time of starting operation of a fuel consumption unit such as an internal combustion engine, and comprises a fuel pump 10 for supplying fuel reserved in a fuel tank 1 to an engine 20, a pressure regulator 30 for introducing therein the fuel to be supplied to the engine 20 from the fuel pump 10 and regulating the fuel at 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 40 for changing the set pressure of the pressure regulator 30 into a desired set pressure selected from among the high set pressure and the low set pressure, the set pressure changing unit 40 being operative to allow the set pressure of the pressure regulator 30 at the time of the fuel pump 10 being stopped to be higher than the set pressure of the pressure regulator 30 at the time of the fuel pump 10 being operated.