Piston for an internal combustion engine and method for producing same

US4334507A · kind A · utility

Assignee

• Mahle GmbH · DE

Inventors

• Hans-Jurgen Kohnert · Winnenden, DE
• Walter Graf · Euerdorf, DE
• Ladislaus Jakl-Banka · Bad Marienberg, DE
• Manfred Rohrle · Laichingen, DE

Key dates

• Filing date: May 29, 1980
• Grant date: Jun 15, 1982
• Expiry date: May 29, 2000

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49261
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention provides a piston formed by casting a metal piston body under pressure around an insert, the body being made of aluminium or aluminium alloy and the insert being made of a porous layer having a thickness 20 to 50 times the pore diameter and completely filled with the piston body metal which projects from the body into the pores of the insert.