Piston for an internal combustion engine and method of manufacturing the piston

US12331697B2 · kind B2 · utility

Assignee

• Mahle International GmbH · DE

Inventors

• Stephan Koerner · Petershöfe, DE
• Daniel Martinez

Key dates

• Filing date: Jun 27, 2024
• Grant date: Jun 17, 2025
• Expiry date: Jun 27, 2044

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02F2200/00
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A piston for an internal combustion engine with a piston crown having an outer surface and with a thermal management layer. The thermal management layer contains a functional layer. The functional layer in turn contains a functional layer matrix, wherein the functional layer matrix includes polysiloxane and hollow spheres embedded in the functional layer matrix. The thermal conductivity of the functional layer is in the range of 0.2 to 2 W/(m*K) and the heat penetration coefficient of the functional layer is in the range of 400 to 1200 J/(K*m2*s½).