Federal-mogul Nurnberg Gmbh

Frank Thomas Hugo Dörnenburg

Klaus Lades

Arnd Baberg

In a process for producing a piston for an internal combustion engine, a groove is worked into a cast piston blank proceeding from a combustion chamber cavity () in a largely radial direction and then closed to form a cooling duct. A cast piston for an internal combustion engine has a closure which is fitted after the casting and the machining between the cooling duct and a combustion chamber cavity ().

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Lauf, Germany

Frank Thomas Hugo Dörnenburg