| 摘要 |
An engine has a fuel supply system comprising a fuel pump provided with valves for opening and closing a fuel suction hole and a fuel exhaust hole alternately, synchronously with a movement of an air supply push rod, a pipe connecting the fuel suction hole of the fuel pump and a fuel supply source to each other; and a pipe connecting the fuel exhaust hole of the fuel pump and a fuel injection device provided on an air supply port of the cylinder to each other, wherein a fuel is fed to the fuel injection device from the fuel pump owing to an upward movement and a downward movement of the air supply push rod caused by a rotation of the crankshaft; and the air supply valve is opened to inject the fuel.
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