Patent · US Active

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

US9242317B2 · kind B2 · utility

2Cited by

8References

5Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Rainer Scharp · Leinfelden, DE
Peter Kemnitz · Leutenbach, DE
Michael Ullrich · Heubach, DE

Key dates

Filing date	Jan 24, 2014
Grant date	Jan 26, 2016
Priority date	—
Expiry date	Mar 30, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49254
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for producing piston for an internal combustion engine which has a piston head that has a circumferential cooling channel as well as a combustion bowl having a circumferential bowl wall that makes a transition into a piston crown by way of a bowl edge region. The combustion bowl is formed at least in part by a piston base body and the bowl wall is formed at least in part from an insert. The insert is connected with the piston base body by means of beam welding. A lower weld seam is configured in the bowl wall, which seam encloses an acute angle with the piston center axis (M) and ends in the lower half of the cooling channel. An upper weld seam runs from the cooling channel ceiling to the piston crown and is disposed centered or radially offset toward the outside, with reference to the clear width of the cooling channel.

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