Patent ID: 7823684

Claim:
A power unit for a motorcycle, comprising: an internal combustion engine including a crankcase composed of an upper case half body and a lower case half body joined together at a split face and rotatably supporting a crankshaft with an axial line located on the split face; and a continuously variable transmission including a belt wound around a drive pulley receiving power transmitted from the crankshaft and around a driven pulley; wherein the crankcase is provided with a partition wall that separates between a crank chamber housing the crankshaft and a continuously variable transmission chamber housing the continuously variable transmission; wherein an axial line of the crankshaft and respective axial lines of the drive pulley and the driven pulley are each located at a corresponding one of apexes of an imaginary triangle on a view projected on a plane perpendicular to the axial line of the crankshaft; and wherein an axial line of a downside-located pulley, of the respective axial lines of the drive pulley and the driven pulley, is located on the split face.