| 摘要 |
PROBLEM TO BE SOLVED: To accurately control fuel injection quantity in a return-less type fuel supply device. SOLUTION: This device is provided with an injector injecting fuel toward an internal combustion engine, a reservoir tank storing fuel to be sent to the injector at predetermined pressure, an electric fuel pump 2 pressure-feeding fuel in the fuel tank 1 toward the reservoir tank according to pressure in the reservoir tank, a pressure-feed pipe 3 forming a fuel channel from the fuel pump 2 to the reservoir tank, a branch pipe 4 forming a return channel provided on the pressure-feed pipe 3, branching off the fuel channel and returning fuel delivered from the fuel pump 2 to the fuel tank 1, a restriction part 41 provided in the branch pipe 4 and reducing channel section area of the return channel, and a pressure regulator 42 provided in the branch pipe 4 and opening the return channel when pressure of fuel in the return channel gets to a predetermined release pressure or higher. COPYRIGHT: (C)2007,JPO&INPIT
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