Patent ID: 8079330

Claim:
A multicylinder engine for a motorcycle, said engine installed on the motorcycle having a parking stand disposed on one side thereof, said multicylinder engine comprising: a plurality of cylinders; a cylinder head having an oil passage and an air-bleeding hole formed therein; said air-bleeding hole formed in an upper portion of said cylinder head and operatively connected with said oil passage so as to be in fluid communication therewith, said air-bleeding hole extending upwardly from the oil passage and configured to release air from the oil passage outwardly therethrough and into a valve chamber above said cylinder head; an intake valve and an exhaust valve disposed in the cylinder head for each of said plurality of cylinders; the intake valve and the exhaust valve being selectively openable and closable during engine operation; a valve actuation mechanism comprising a hydraulically-operated valve pausing mechanism configured to hold at least one of the intake valve and the exhaust valve of at least one of said plurality of cylinders in a suspended state, wherein said at least one of the intake valve and the exhaust valve is held closed, depending on the operational state of the engine; a hydraulic-pressure control device for controlling hydraulic pressure of the valve pausing mechanism; wherein said valve actuation mechanism controls operation of said intake valve and said exhaust valve, and said oil passage is configured and arranged for introducing working oil to the valve pausing mechanism from the hydraulic-pressure control device; and wherein said air-bleeding hole formed in the cylinder head communicates with a portion of the oil passage located at a highest level in the oil passage when the motorcycle is parked in an inclined state using said parking stand.