Cooling channel piston for an internal combustion engine and method for the production thereof
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United States of America Patent
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Jul 16, 2013
Grant Date -
Oct 1, 2009
app pub date -
Jun 21, 2007
filing date -
Jul 7, 2006
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Abstract
A method for producing a one-piece, lightweight piston consisting of steel and having a small compression depth (S) forms piston with at least one cavity in a shaft aperture region. A piston blank is produced in a first step using a forging or casting method. To form a cooling channel between an annular region and a combustion chamber recess an annular section is formed in one piece onto the wall of a cooling channel in the vicinity of the piston base. The joint produced between the annular section and an outer wall of the cooling channel is sealed by welding.
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