Piston for internal combustion engine and for use in motor vehicle construction, has ring groove rounded in cross-section between piston base and compression ring

摘要

The piston has a ring groove (2) rounded in cross-section between a piston base (3) and a compression ring. The ring groove is incorporated with radius of 3 to 5 millimeters. The ring groove has a circular-section shaped cross-section with the radius in area of 3 to 5 millimeters.