Inventors:
Shin Nomura - Yokohama, JP
Takahiro Miura - Yokohama, JP
Makoto Kano - Yokohama, JP
Yutaka Mabuchi - Yokohama, JP
Takahiro Hamada - Yokohama, JP
Miki Murakami - Huntington Beach CA, US
Assignee:
Nissan Motor Co., Ltd. - Yokohama
International Classification:
F01L 1/04
US Classification:
123 906, 123 9034, 508291, 508487
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.
