公开(公告)号：US20220220920A1

公开(公告)日：2022-07-14

申请号：US17570859

申请日：2022-01-07

Applicant: MATERION CORPORATION

Inventor： Andrew Tarrant ,  David TRICKER ,  Steffen MACK ,  David KRUS ,  Andrew RUZEK ,  Fritz GRENSING

IPC: F02F3/00 ,  B22D21/00 ,  C22C21/16 ,  C22C21/14 ,  F16J9/22

Abstract: The present disclosure relates to piston assembly comprising a piston having a circumferential groove and a ring groove insert within the circumferential groove of the piston. Particularly, the ring groove insert is a second material different from a first material of the piston. The second material has at least one of the following: a) a density from 90% to 120% of a density of the first material; b) a coefficient of thermal expansion (CTE) from 50% to 90% of a CTE of the first material; or c) a thermal conductivity greater than a thermal conductivity of the first material.