| 摘要 |
PURPOSE: To improve the cooling efficiency of the accessories of an engine by making the cooling system of a muffler and the cooling system of the engine independent separately. CONSTITUTION: In a snowmobile in which a muffler 44 and an engine 13 are provided in an engine room 12, and the muffler 44 is provided at the front side of a head pipe 14, while the engine 13 is provided at the rear side of the head pipe 14, the muffler 44 and the engine 13 are separated by a partition wall 50, so as to partition and form a muffler room 51 and an engine room 52. As a result, to the muffler room 51, the outer air is led in from the second and the third openings 47 and 48,' and exhausted from an exhaust port 54. And to the engine room 52, the outer air is led in from the first opening 46, and exhausted from an exhaust port 55. |
