Piston for e.g. modern high power diesel internal combustion engine, has edge region comprising greater transition radius in direction parallel to piston pin axis than in another direction perpendicular to piston pin axis

摘要

The piston (1) has a combustion chamber bowl (5) and a piston pin axis (11). An edge region connects the combustion chamber bowl with a piston head (4). The edge region is provided with a transition radius (9) between the piston head and the combustion chamber bowl. The edge region comprises a greater transition radius in a direction parallel to the piston pin axis than in another direction perpendicular to the piston pin axis.