Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Patent
1999-03-26
2000-06-20
Lo, Weilun
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
123 9034, 123196A, 1231933, F02F 124, F02D 1300
Patent
active
060764929
ABSTRACT:
A variable valve timing mechanism for an internal combustion engine wherein the camshaft is supported at one end by a combined bearing and valve body member that is detachably connected to the supporting engine body. The connection is such that fluid from the engine lubricating system can be delivered to this body and distributed by a control valve mounted in it. This simplifies machining of the engine body and permits a more compact, lower cost construction without sacrificing any function. The control valve is mounted in a bore that is accessible through the side of the cylinder head and is actuated by a servo motor mounted on the exterior of the cylinder head to provide a compact, rigid and easily serviced assembly.
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Lo Weilun
Yamaha Hatsudoki Kabushiki Kaisha
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