| 摘要 |
PROBLEM TO BE SOLVED: To improve cooling efficiency of fuel and to easily secure arrangement space. SOLUTION: This engine for propeller is provided with a fuel supply system B for supplying fuel to each cylinder at an engine arrayed with each cylinder in the longitudinal direction. The fuel supply system B is provided with a delivery pipe 46 distributing fuel to an injector 51 injecting fuel, to supply fuel to the delivery pipe 46 by driving a fuel pump 43 via fuel supply passages 42, 45, vapor separators 44 are disposed on the fuel supply passage 42, 45 to return excessive fuel from the delivery pipe 46 to the vapor separators 44 via a fuel return passage 47. In this case, the engine is provided with a fuel cooling device C for cooling fuel on the fuel supply passage 42, 45, and/or the fuel return passage 47.
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