Valve train for internal combustion engine

Details Valve train for internal combustion engine Valve train for internal combustion engine

2006-12-12

2006-12-12

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Cam

C123S090340, C508S291000, C508S487000

Reexamination Certificate

active

07146956

ABSTRACT:
A valve train for an internal combustion engine is comprised of a lubricating oil, and a camshaft which is made of an iron-based material and comprises a cam lobe and a camshaft journal. The camshaft slidingly moves on a counterpart thereof through the lubricating oil. A hard carbon film is formed on at least one of a sliding portion of the camshaft and the counterpart made of an iron-based material. A hydrogen amount of the hard carbon film is 10 atomic percent or less.

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