| 摘要 |
PROBLEM TO BE SOLVED: To provide cooling structure for a belt chamber of a motorcycle, in which increase in temperature in the belt chamber is suppressed, by taking a necessary and sufficient amount of outside air in the belt chamber to use the outside air for cooling each sections. SOLUTION: In the motorcycle, the belt chamber S accommodates a V-belt- type automatic transmission 21. The V-belt-type automatic transmission is constituted by winding an endless V-belt 40 between a driving pulley 38 disposed to a crankshaft 24 of an engine, and a driven pulley 39 disposed to a driven shaft arranged in parallel with the crankshaft 24. On outer faces of fixed sheaves 46 and moving sheaves of the driven pulley 39 (or at least an outer face of one of moving sheaves 42 of the driving pulley 38), a plurality of fins 46a, 47a are formed to constitute a plurality of cooling fans. These cooling fans take the outside air into the belt chamber S from the inside and outside of the belt chamber S. Accordingly, the cooling structure for the belt chamber of the motorcycle is provided. |
