| 摘要 |
PROBLEM TO BE SOLVED: To provide an engine unit which further lowers a temperature in an engine housing part and lowers a temperature of intake air thereby maintaining high intake efficiency.SOLUTION: An air guide port 52g which opens to the rear side is provided at a rear end part of an engine housing part 52, and an exhaust port 52f which opens to the upper side is provided at an upper front end part of the engine housing part 52. A heat radiation part 54 which covers the exhaust port 52f is provided and a discharge port 54f which opens to the rear side is provided at the heat radiation part 54. An upstream end part of an intake air introduction part 20 is disposed above the rear end part of the engine housing part 52 and an intake port 23b formed at the upstream end part opens to the rear side. |
