INTERNAL COMBUSTION ENGINE WITH WIND EXHAUST DUCT AND VEHICLE MOUNTED WITH INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To increase the wind volume of the cooling wind flowing through a radiator and to enhance the cooling performance of a radiator by providing a wind exhaust duct using a crankcase of an internal combustion engine. SOLUTION: A cooling device 50 of the internal combustion engine E includes the radiator 52 arranged lateral to crankcases 23a, 23b, and the wind exhaust duct 70 for exhausting the cooling wind passed through the radiator 52 to the atmosphere. The wind exhaust duct 70 is arranged extending along a rotational axis of the crankshaft at upper portions of the crankcases 23a, 23b and an upper portion of a transmission case 16. COPYRIGHT: (C)2008,JPO&INPIT