Process for producing a piston for an internal combustion engine and piston for an internal combustion engine
AssigneeFederal-Mogul Nurnberg GmbH
InventorsArnd Baberg, Frank Thomas Hugo Dörnenburg, Klaus Lades
Life of this patent
Estimating the term…
Abstract
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 (20) 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 (20).
Claims8
A method for producing a piston (10) for an internal combustion engine, in which a groove is worked into a cast piston blank, proceeding from a combustion chamber cavity (20), in a largely radial direction and is subsequently closed to form a cooling channel (16).
The method according to one of the preceding claims,
- characterized in that further a radial groove is incorporated, proceeding from the outer side of the piston (10), and filled with material (14), and an annular groove (12) is worked out of this.
A cast piston (10) for an internal combustion engine, which comprises between the cooling channel (16) and a combustion chamber cavity (20) a closure (18) attached after the casting and the processing.
Dependencies are inferred from the claim text.