Patent · US Active

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

US8528206B2 · kind B2 · utility

12Cited by

4References

5Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Rainer Scharp · Leinfelden, DE
Gerhard Berr · Aspach, DE
Sascha-Oliver Boczek · Dielheim, DE
Reiner Mueller · Rottweil, DE

Key dates

Filing date	Apr 18, 2011
Grant date	Sep 10, 2013
Priority date	—
Expiry date	Dec 5, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49261
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method for the production of a piston (1) made of steel, for an internal combustion engine, in which the upper piston part (3) is produced using the forging method, and the lower piston part (4) 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 semi-hot forming, to finish it to such an extent that further processing of the combustion bowl and of the upper cooling channel regions can be eliminated.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.