Piston with oil cooling passage and method of construction thereof
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United States of America Patent
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Jun 23, 2015
Issued Date -
N/A
app pub date -
Jul 19, 2013
filing date -
Jul 20, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A piston for an internal combustion engine and method of construction thereof are provided. The piston includes a piston body having an upper combustion surface and an annular cooling gallery surrounding an undercrown region. An outer wall depends from the upper combustion surface. An annular ring belt region is formed in the outer wall adjacent the upper combustion surface. The ring belt region has at least one ring groove formed therein. At least one oil passage extends from the at least one ring groove to the cooling gallery. The oil passage has a first portion depending radially inwardly from the ring groove and a second portion ascending radially inwardly from the first portion to the cooling gallery.
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