Piston for a reciprocating-piston internal combustion engine

US10502158B2 · kind B2 · utility

Assignee

• MAN Truck &Bus AG · DE

Inventors

• Thomas Malischewski · Heilsbronn, DE
• Jürgen Ritter · Nuremberg, DE

Key dates

• Filing date: Feb 15, 2017
• Grant date: Dec 10, 2019
• Expiry date: Jun 3, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02F2003/0061
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The present disclosure relates to a piston for a reciprocating-piston internal combustion engine, comprising a piston head and a piston barrel, wherein the piston head has an encircling ring belt with at least one ring groove for a piston ring and has, in the region of the ring belt, an encircling cooling duct. The cooling duct extends from the ring belt as far as a wall of the piston barrel in order to increase an oil film temperature of the oil film in the cylinder liner between the piston barrel and cylinder and to thereby reduce the piston barrel friction.