Patent ID: 7971566
Filing Date: 2011-07-05
Classification: F02B,F02F,Y02T,Y10T

Abstract:
1. A piston for an internal combustion engine, having a combustion bowl provided in the piston crown, which bowl has a circumferential undercut, whereby the bowl edge that connects the undercut with the piston crown alternately has rounded, and sharp-edged bowl edge regions wherein the circumferential bowl edge makes a transition, along its entire circumference, into a planar circumferential surface, which in turn makes a sharp-edged transition into the undercut, along its entire circumference and wherein the circumferential bowl edge has a total of two rounded bowl edge regions that lie opposite one another in the piston pin axis, and a total of two sharp-edged bowl edge regions that lie opposite one another perpendicular to the piston pin axis.