Patent ID: 8181623
Filing Date: 2012-05-22
Classification: F02F,F05C,F16C,F16J,Y10T

Abstract:
1. A piston for an internal combustion engine, having at least two pin bores for accommodating a piston pin, the bores having a cylindrical inside contour, wherein the bores are provided with a coating comprising a resin with solid lubricant particles embedded in the coating, wherein the coating forms at least one geometric deviation from the cylindrical inside contour of the pin bores; wherein the inside surface of the bores is provided with a coating by means of rotation atomization with a coating tool, the coating being a thermally cured resin with solid lubricant particles embedded therein; wherein the at least one geometric deviation is formed by a stress relief pocket, ovality or shaped bore, and wherein the at least one geometric deviation from the cylindrical outside contour is configured by varying the amount of the resin with solid lubricant particles given off by the coating tool and/or by varying an advance of the coating tool.