Piston for internal combustion engine
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United States of America Patent
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-
Jan 5, 2016
Grant Date -
Sep 25, 2014
app pub date -
Mar 11, 2014
filing date -
Mar 21, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A piston for an internal combustion engine comprises a crown, a skirt section extending from the crown, and an oil ring groove. The piston further comprises a drain hole and a cooling channel. The drain hole extends from the oil ring groove to an inside space of the piston. The cooling channel is formed in the crown at a level above the oil ring groove, and arranged to covey a cooling oil. The cooling channel includes a channel segment which is located near the drain hole and which is formed to have a sectional shape avoiding the drain hole.
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