MULTI-PART PISTON RING

摘要

The invention relates to a multi-part piston ring (1), comprising an at least one-piece spring carrier (8), which is provided with a joint region (4), and an at least one-piece spring element (3), which is positioned in a groove (9) provided in the region of the inner circumferential surface of the spring carrier, wherein the wall thickness (a) of the spring carrier is designed substantially uniform both in the region of the ends (5, 6) of the spring carrier facing the joint and in the back region (7) thereof. Between the back region and the joint ends, a pocket (2', 2'') is provided, which extends over a circumferential region (ß) of at least 60° and is created by local wall thickness reduction (a-b) of the spring carrier.