| 摘要 |
PURPOSE:To compensate flow path resistance in a water drip preventive intake passage of labyrinth construction, by providing fins onto a flywheel of a magneto, allowing the intake passage to front to the fins and using the fins as a supercharge fan. CONSTITUTION:Intake air of an engine 1 flows from a rear intake port 8 in an intake port passage 7, intake passage 11 and a silencer 12 to reach carburetor 13. Fins 6 are provided to a flywheel magneto 5 and the magneto 5 is positioned between the passages 7 and 11. The fin 6 forcibly feeds intake air to a passage 10 and operates as a supercharger. In this way, even if the intake passage becomes longer to increase flow path resistance, intake efficiency is not decreased. |
