| 摘要 |
PURPOSE:To improve output of an engine by way of heightening combustion efficiency by communicatively connecting the other opening end of an air intake passage to an air intake port of the engine through a water removing mechanism. CONSTITUTION:When outside air is introduced into a first air room part 9a of an air room 9 from outside through an outside air introduction port 6 of a hull 1, the outside air in the first air room part 9a is introduced to a second air room part 9b through an opening part 11 of a wall member 10, and thereafter it is introduced into the inside of an outside air introduction pipe 19 through an opening end 19a. The outside air introduced to the outside air introduction pipe 19 is supplied to an air intake port 18 of a carburetor 14 through a separator 20 and a silencer/flame arrester part 21. At this time, when the outside air and water are not separated inside of the air room 9, water enters the outside air introduction pipe 19 with the outside air and flows into the separator 20, the outside air and water are separated by the separator 20. Consequently, only the outside air from which water is separated is supplied to the air intake port 18 of the carburetor 14, and combustion efficiency is improved. |
