Patent ID: 7913662

Claim:
An engine with a cylinder disabling mechanism comprising: a crankcase of a motorcycle engine; a cylinder block mounted on an upper portion of the crankcase and including a plurality of cylinders with pistons disposed respectively therein; a cylinder head mounted to an upper portion of the cylinder block; a cylinder head cover mounted to an upper portion of the cylinder head; combustion chambers defined between a lower surface of the cylinder head and upper surfaces of the pistons; engine valves disposed in the cylinder head on intake and exhaust sides of the combustion chambers; a valve operating device disposed between the cylinder head and the cylinder head cover, for opening and closing the engine valves; an engine valve disabling mechanism for disabling opening and closing movement of the engine valves in response to hydraulic pressure; an oil pump disposed in a lower portion of the crankcase, for supplying the hydraulic pressure to the engine valve disabling mechanism; and a hydraulic pressure control valve for controlling the supply of hydraulic pressure to the engine valve disabling mechanism depending on a vehicle operating state; wherein a pipe for delivering working oil from the lower portion of the crankcase to the hydraulic pressure control valve is disposed on a front surface of the engine.