Piston for an internal combustion engine and method for its production

US7921555B2 · kind B2 · utility

Assignee

• Mahle International GmbH · DE

Inventors

• Arnold Benz · Esslingen am Neckar, DE
• Helmut Kollotzek · Mutlangen, DE
• Markus Leitl · Winnenden, DE
• Sven Schilling · Bad Marienberg, DE
• Ernst Limbach · Winnenden, DE
• Josip Zvonkovic · Waiblingen, DE

Key dates

• Filing date: Dec 15, 2006
• Grant date: Apr 12, 2011
• Expiry date: Jan 4, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49274
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A piston for an internal combustion engine has annular cooling passage arranged in the vicinity of the piston crown and radially on the outside, which, in those regions of the pin bosses which lie close to the boss holes, has boss cooling passages which are connected to the cooling passage and are intended for improved cooling of the pin bosses.