Patent ID: 11898494
Assignee: GENERAL ELECTRIC COMPANY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A gas turbine engine defining an axial direction, the gas turbine engine comprising:
a combustion section including a liner extending between a forward end and an aft end generally along the axial direction, the liner at least partially defining a combustion chamber;
a structural member positioned in or around at least a portion of the combustion section;
a piston ring configured to extend around the aft end of the liner; and
a piston ring holder including a first end and a second end, the piston ring holder attached to the structural member at the first end and positioned proximate to the piston ring at the second end, the piston ring holder further including:
a first portion comprised of a first metal material having a first coefficient of thermal expansion, αH1, and
a second portion comprised of a second metal material having a second coefficient of thermal expansion, αH2, the first coefficient of thermal expansion, αH1, being different than the second coefficient of thermal expansion, αH2,

wherein the piston ring holder has a unitary non-separable configuration between the first portion and the second portion, and
wherein the piston ring holder is free of ceramic materials.