| 摘要 |
An air-cooled engine (10) is cooled by cooling air (Wi). The air-cooled engine (10) includes a cylinder block (33) and a cylinder head (28). The cylinder block (33) has cylinder cooling through-ducts (101, 102) capable of transmitting cooling air (Wi), on the periphery of a cylinder (26). The cylinder head (28) has a head-cooling through-duct (104) capable of transmitting cooling air (Wi). The cylinder--cooling ducts (101, 102) and the head-cooling duct (104) extend in a direction perpendicular to the axial line (109) of the cylinder (26), and are communicated with each other by means of communication channels (105, 105). ® KIPO & WIPO 2009
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