| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooling structure of a small air-cooled engine.SOLUTION: In an air-cooled engine, an engine body is formed of a cylinder and a crankcase, and a muffler is attached to an exhaust port of the cylinder. The air-cooled engine has: a cooling fan at least at one end of a drive shaft; a fan case housing the cooling fan; a cylinder cover housing the cylinder and forming a cylinder cooling chamber; a first muffler cover covering at least a part of the muffler with a gap; and a second muffler cover covering at least a part of the first muffler cover with a gap. A muffler cooling chamber is formed by the first muffler cover and the second muffler cover, and a part of the cooling wind generated by the cooling fan is supplied to the muffler cooling chamber. In the air-cooled engine, the cooling wind is supplied to at least one of a first space between the muffler and the first muffler cover and a second space between the first muffler cover and the second muffler cover. |
