Mahle International Gmbh

Sebastian Mangold

Thomas Hettich

Benjamin Schmieder

Frank Ehmann

Aziz Goezcue

A method for producing a piston for an internal combustion engine may include producing a piston upper part including a piston top, at least parts of a ring section, and at least part of a cooling channel, producing a piston lower part and closing the part of the cooling channel arranged in the piston upper part via an additive method, and finish-machining the piston. Finish-machining the piston may include producing at least one annular groove in a ring support for receiving a piston ring.

Method for producing a piston

A piston for an internal combustion engine including a piston crown and a combustion chamber recess recessed therein, the combustion chamber recess including a recess edge. The piston may also include a ring groove for receiving a piston ring. The piston may further include a cooling duct having a smaller spacing from the piston crown than that of a flank of the ring groove, the cooling duct defining a minimum spacing from the piston crown at a first location, and a minimum spacing from the combustion chamber recess at a second location. The cooling duct may have a rounded portion between the first location and the second location. The cooling duct may have a maximum spacing from the recess edge at a third location. The rounded portion may have a rounding radius defined at least at the third location that is greater than 4% of a piston diameter.

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Stuttgart, Germany

Sebastian Mangold