| 摘要 |
PROBLEM TO BE SOLVED: To achieve miniaturization of a two-cycle engine of cylinder fuel injection type by reducing the number of component items of the fuel supply system and driving a high-pressure fuel pump using a ring-shaped member for joining crank journals. SOLUTION: From an injector 21, fuel is injected into each cylinder of a two-cycle engine, and a high-pressure fuel pump 24 to supply the fuel to the injector 21 is driven directly by a crankshaft 3. The crankshaft 3 is formed by press-fitting a plurality of crank journals into a joining ring 54, and a plunger 25 of the pump 24 is contacted with a cam face 63 formed on the outside surface of the ring 54, and the pump 24 is driven by the ring 54.
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