PISTON RING WITH VARYING APEX LINES

摘要

The invention relates to a piston ring (1) with an outer running surface (3), two flanks (5, 6) and an inner circumferential surface (7). The running surface (3) has a profile. The profile of the running surface is essentially convexly spherical (10) and has an apex (B1). The axial position of the apex (B1) varies periodically in the circumferential direction.