Patent · US Active

Piston for an internal combustion engine and method for its production

US8813712B2 · kind B2 · utility

5Cited by

9References

7Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Karlheinz Bing · Prien am Chiemsee, DE
Michael T. Lapp · Bloomfield, US
Rainer Scharp · Leinfelden, DE
Michael Ullrich · Heubach, DE

Key dates

Filing date	Apr 18, 2011
Grant date	Aug 26, 2014
Priority date	—
Expiry date	Aug 9, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49252
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A piston for an internal combustion engine has a piston head, a piston skirt, and a circumferential recess configured between the piston head and the piston skirt. The piston has a piston base body and a piston ring element. The piston base body has a crown region of a combustion bowl and the piston skirt. The piston ring element has a piston crown, a wall region of the combustion bowl, a circumferential top land, and a circumferential ring belt with ring grooves. The piston ring element has a circumferential cooling channel between the wall region of the combustion bowl and the ring belt, closed with a closure element. The piston base body and the piston ring element have a circumferential joining seam in the region of the combustion bowl, by way of which seam they are non-releasably connected with one another.

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