PISTON FOR AN INTERNAL COMBUSTION ENGINE
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United States of America Patent
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Issued Date -
Sep 17, 2015
app pub date -
Oct 8, 2012
filing date -
Oct 8, 2012
priority date (Note) -
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Abstract
A piston assembly for an internal combustion diesel engine having a piston diameter of 160 to 650 mm, includes a top part, a body part and a cooling gallery arranged as a hollow space there between, the top part defining, when installed in an engine cylinder, the piston side of a combustion chamber, and the body part having an aperture for a gudgeon pin, bosses for distributing forces, when in use, between the piston and the gudgeon pin. The body part has an interior, an outer surface including indentations defined by the outer surfaces of the bosses and an imaginary boundary of the cylinder of the engine. The interior side of the top part forms an inner cooling surface for piston cooling fluid to flow along and cool the central area of the top part, and the body part includes a conduit extending between the indentation and the cooling gallery.
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