Patent ID: 7174867
Filing Date: 2007-02-13
Classification: F01L,F02F

Abstract:
1. An air-cooled internal combustion engine for a vehicle, said engine comprising: a cylinder block having a plurality of cylinder bores disposed in parallel to each other, a cylinder head secured to an upper portion of said cylinder block, a crankshaft, two camshafts disposed in a parallel, juxtaposed relationship to each other so as to extend perpendicularly to a forward and backward direction of the vehicle at an upper portion of said cylinder head and positioned on front and rear sides of the engine relative to each other, a camshaft driving mechanism for transmitting rotational driving force of the crankshaft to said camshafts, and a substantially H-shaped cylinder head cover attached to said cylinder head and defining an air flow passage therein which extends between said camshafts, wherein a cooling space into which running wind can be introduced is formed below that one of said camshafts which is positioned on the front side of the engine, and wherein the cylinder head cover has an opening formed therein which interconnects said cooling space and said air flow passage.