Patent · US Active

Piston for an internal combustion engine and cover ring for the cooling channel of the piston

US7387100B2 · kind B2 · utility

5Cited by

3References

20Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Rolf-Gerhard Fiedler · Wissen, DE
Rainer Scharp · Leinfelden, DE
Hans-Peter Wieland · Ditzingen, DE

Key dates

Filing date	Jul 12, 2006
Grant date	Jun 17, 2008
Priority date	—
Expiry date	Jul 31, 2026

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02F3/22
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A piston for an internal combustion engine has a piston head and a piston skirt spaced apart from the piston head by a ring-shaped recess. The piston has at least one pin bore for accommodating a piston pin. A ring-shaped circumferential cooling channel for a coolant is provided in the piston head, which channel is closed off by a cover ring that consists of at least two segments. At least one region of the cover ring projects at least partially into the clear opening of the at least one pin bore, in such a manner that the cover ring simultaneously forms the retaining element for the piston pin.

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