Patent · US Active

Piston for an internal combustion engine

US8181623B2 · kind B2 · utility

3Cited by

11References

10Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Peter Kemnitz · Leutenbach, DE
Klaus Keller · Lorch, DE

Key dates

Filing date	Jun 8, 2011
Grant date	May 22, 2012
Priority date	—
Expiry date	Jun 8, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49249
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A piston for an internal combustion engine has at least two hub bores for holding a piston pin. The hub bores are formed with a cylindrical inner contour and are provided with a coating comprising a resin with solid lubricant particles embedded therein. The coating forms at least one geometric deviation from the cylindrical inner contour of the hub bores. A method for producing a piston of the type, includes producing bores with a cylindrical inner contour and applying a coating medium comprising a resin with solid lubricant particles embedded therein to the inner faces of the bores by a coating tool, such that the resulting coating forms at least one geometric deviation from the cylindrical inner contour of the hub bores.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.