Variable valve timing arrangement

Details Variable valve timing arrangement Variable valve timing arrangement

1999-04-26

2000-03-07

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Lubrication

1231933, 123196M, F01C 2104, F01L 1344

Patent

active

060326298

ABSTRACT:
Two embodiments of VVT mechanisms for internal combustion engines. The VVT mechanisms are hydraulically operated by the engine lubricating oil through control passages formed in the forward-most bearing portion of the camshaft. However, spaced on both sides of these control passages, there are provided lubricant supplies to the forwardmost and rearward most ends of the forward bearing surfaces of the camshaft so as to provide good lubrication, particularly in the more highly loaded forwardmost portion thereof.

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