| 摘要 |
PURPOSE:To provide a fuel feed device in which a fuel discharge quantity can be increased while maintaining pump capacity at low temperature. CONSTITUTION:This fuel feed device 1 feeds fuel from a fuel tank to a fuel injection device by fluctuation of a diaphragm 18 due to pressure variation in a crank case. It is formed with a first and a second damper chambers 10, 11 between a membrane 6 defining a part of each chamber 7, 8 on the fuel suction side and the fuel discharge side and a cover body 4. These damper chambers 10, 11 can be communicated to the outward through a piping 30, and a solenoid valve 31 is provided on the piping 30. The solenoid valve 31 is made ON so as to cut off the damper chambers 10, 11 from the outward, when the engine speed reaches a decided speed, or when the temperature in the damper chambers 10, 11 reaches a decided temperature. |
