Patent ID: 8181614

Claim:
An internal combustion engine, comprising a cylinder head; an exhaust system; a head cover cooperating with said cylinder head for forming a valve motion chamber; a reed valve for controlling supply of secondary air to the exhaust system; said reed valve being disposed on said head cover; a cam cap fastened to said cylinder head; and a valve motion control apparatus disposed in said valve motion chamber, said valve motion control apparatus comprising: a camshaft; and a main enlarged member extended towards said camshaft for forming a reed valve chamber for accommodating said reed valve therein; said main enlarged member being integrally provided on said head cover at a location at which said reed valve is disposed; wherein said cam cap includes a recessed portion formed thereon; and wherein said recessed portion in which a portion of the main enlarged member is inserted is provided on the cam cap fastened to said cylinder head so as to cooperate with said cylinder head for rotatably supporting said camshaft.