Piston for internal combustion engine has cavity wall consisting of reinforcement ring formed from oxidation-resistant material of low thermal conductivity

摘要

The piston (10) has a base body (11) and a piston ring element (12). Its combustion cavity (18) has a wall (19) passing via a cavity edge region (27) into the piston head (26). The cavity wall, at least in the edge region, consists of a reinforcement ring (20) formed from oxidation-resistant material of low thermal conductivity.