Valve lifter for internal combustion engine
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United States of America Patent
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-
N/A
Issued Date -
May 12, 2005
app pub date -
Aug 10, 2004
filing date -
Aug 11, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A valve lifter for an automotive internal combustion engine. The valve lifter includes a main body formed of one of an aluminum alloy and an iron-based alloy as a base material and having a top surface and a side surface which are respectively in slidable contact with opposite members in presence of at least one of a lubricating oil and a lubricant. Additionally, a hard carbon thin film is formed on the main body to cover the top surface and the side surface, the hard carbon thin film containing hydrogen atom in an amount of not more than 1 atomic %.
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