Piston for internal combustion engines, especially diesel engines

US5605126A · kind A · utility

Assignee

• Alcan Deutschland GmbH · DE

Inventors

• Lothar Hofmann · Burgkunstadt, DE
• Rudolf Schwarz · Alzenau, DE
• Andreas Deuber · Nürnberg, DE
• Karl-Heinz Obermeier-Wagner · Nürnberg, DE

Key dates

• Filing date: Feb 6, 1996
• Grant date: Feb 25, 1997
• Expiry date: Feb 6, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A piston for diesel engines is made of a toughness-increasing aluminium alloy containing copper, nickel, silicon, magnesium, iron and manganese. The use of this material, which can conventionally be chill-cast, and by implying special dimensions, provides a piston which, despite its relatively light construction, provides the utmost security against cracking in the stressed regions, e.g. the piston boss or the combustion chamber recess.