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US 12,078,122 B2Granted
Annular ring groove of a piston
AssigneeAi Alpine US Bidco Inc
InventorsRichard John Donahue, James Richard Zurlo
Life of this patent
Estimating the term…
Abstract
A power cylinder system for a reciprocating engine includes a piston configured to move within a cylinder of the reciprocating engine. The system also includes a groove extending circumferentially about the piston and configured to support a ring. An axially-facing surface of the groove has circumferential undulations at ambient temperatures that are configured to compensate for distortions to the groove caused by operation of the reciprocating engine.
Claims20
A method, comprising:
- providing a map of temperatures and/or distortions along a first ring groove of a piston at a temperature above an ambient temperature during operation of the piston;
- and
- providing an axial surface arrangement of first surface variations along the first ring groove of the piston based on the map, wherein the axial surface arrangement of first surface variations counteracts actual distortions during operation of the piston.
A method, comprising:
- forming an axial surface arrangement of first surface variations along a first ring groove of a piston based on a map, wherein the map indicates temperatures and/or distortions along the first ring groove of the piston at a temperature above an ambient temperature during operation of the piston, wherein the axial surface arrangement of the first surface variations counteracts actual distortions during operation of the piston.
A method, comprising:
- operating a system comprising a piston having a first ring groove;
- wherein, at an ambient temperature, the first ring groove has an axial surface arrangement of first surface variations based on a map, wherein the map indicates temperatures and/or distortions along the first ring groove of the piston at a temperature above an ambient temperature during operation of the piston;
- and
- wherein, at an operating temperature of the piston, the axial surface arrangement of first surface variations counteracts the distortions.
1 more element
Dependencies are inferred from the claim text.