Cooled multi-component piston for internal combustion engines

US5357920A · kind A · utility

Assignee

• Mahle GmbH · DE

Inventors

• Peter Kemnitz · Leutenbach, DE
• Gotthard Stuska · Fellbach, DE
• Wolfgang Bierkant · Memmingen, DE

Key dates

• Filing date: Jun 10, 1993
• Grant date: Oct 25, 1994
• Expiry date: Jun 10, 2013

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05C2201/0448
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A cooled multi-component piston is provided in which the hollow annular space in the piston head for the cooling oil is closed off underneath. This is achieved with a sheet-metal ring with a collet which fits in a recess in the piston-ring wall, the sheet metal ring being biased via a retaining clip against the shaft bush.