Method for the production of a piston for an internal combustion engine

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United States of America Patent

PATENT NO 9339898
APP PUB NO 20150101191A1
SERIAL NO

14576384

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Abstract

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A method for the production of a piston made of steel, for an internal combustion engine, in which the upper piston part is produced using the forging method, and the lower piston part is produced using the forging or casting method, and they are subsequently welded to one another. To simplify the production method and make it cheaper, the upper piston part is forged using the method of hot forming and of cold calibration, to finish it to such an extent that further processing of the combustion bowl and of the upper cooling channel regions can be eliminated.

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Patent Owner(s)

Patent OwnerAddress
MAHLE INTERNATIONAL GMBH70376 STUTTGART

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Berr, Gerhard Aspach, DE 8 47
Boczek, Sascha-Oliver Dielheim, DE 21 94
Mueller, Reiner Rottweil, DE 33 429
Scharp, Rainer Vaihingen, DE 82 522

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