METHOD FOR PRODUCING A COOLING-DUCT PISTON AND ASSOCIATED PISTON
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United States of America Patent
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Issued Date -
Aug 28, 2014
app pub date -
May 3, 2012
filing date -
May 4, 2011
priority date (Note) -
Abandoned
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Abstract
A method for producing a cooling-duct piston for an internal combustion engine, composed of a piston upper part and a piston lower part, wherein the piston upper part is detachably connected to a piston lower part and a cooling duct is formed in the region between the piston upper part and the piston lower part which is charged with coolant via at least one inlet opening during the operation of the cooling duct piston and out of which coolant flows again via at least one outlet opening. In a first step, the piston upper part is detached and separated from the piston lower part, and subsequently a ring, which has at least on discharge opening, is fastened to the inlet opening and finally the piston upper part and the piston lower part reconnected. The cooling duct can be charged with coolant via the inlet opening. A cooling duct piston for an internal combustion engine is also disclosed.
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