Patent ID: 7523726

Claim:
An air-cooled V-shaped engine comprising an engine main body formed by projecting cylinders ( 3 ) from a crank case ( 2 ) obliquely upwardly in a left and right direction when seen from the front in a direction parallel to a crank-shaft center axis ( 1 ) and attaching a cylinder head ( 4 ) to a projecting end of each of the cylinders ( 3 ), a fan case ( 5 ) being attached to a forward portion of the engine main body, an air-blowing fan ( 7 ) being housed in the fan case ( 5 ), a central cooling-air passage ( 8 ) being formed between the left and right cylinders ( 3 ), ( 3 ) and between the cylinder heads ( 4 ), ( 4 ), cooling air produced by the air-blowing fan ( 7 ) being supplied to the central cooling-air passage ( 8 ), a throttle body ( 10 ) and a flow-dividing plate ( 9 ) being arranged in front of the central cooling-air passage ( 8 ), the flow-dividing plate ( 9 ) being provided in the fan case ( 5 ) at a position forwardly of the throttle body ( 10 ), the flow-dividing plate ( 9 ) having a bottom-plate portion ( 14 ) arranged at a position lower than the throttle body ( 10 ), the cooling air generated by the air-blowing fan ( 7 ) being divided into left and right side portions of the central cooling-air passage ( 8 ), wherein the fan case ( 5 ) has a ceiling wall a mid portion ( 11 ) of which is arranged just above the bottom-plate portion ( 14 ) of the flow-dividing plate ( 9 ), the ceiling-wall mid portion ( 11 ) of the flow-divided plate ( 9 ) being provided at a position higher than the throttle body ( 10 ) as well as mid side portions ( 12 ), ( 12 ) of the ceiling wall, conducted out of the mid portion ( 11 ) in the left and right direction.