Patent · US Active

Multi-part piston for an internal combustion engine and method for its production

US8161934B2 · kind B2 · utility

4Cited by

2References

11Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Rainer Scharp · Leinfelden, DE
Klaus Keller · Lorch, DE
Volker Weisse · Stuttgart, DE

Key dates

Filing date	Mar 17, 2009
Grant date	Apr 24, 2012
Priority date	—
Expiry date	Jun 17, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49252
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A multi-part piston for an internal combustion engine has an upper piston part with a piston crown, and a lower piston part with pin boss supports and pin bosses connected with the pin boss supports. The upper piston part and the lower piston part each have an inner and an outer support element, which elements delimit an outer circumferential cooling channel. The inner support elements delimit a cavity that is open toward the pin bosses. The cavity is provided with a separate cooling oil collector that has at least one cooling oil opening.

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