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US 12,650,096 B2Granted
System and method having an anti-polishing ring for a piston
AssigneeInnio Jenbacher GmbH & Co OG
InventorsRichard John Donahue, Wolfgang Fimml, Steinbjörn Jónsson
Life of this patent
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Abstract
A system includes a cylinder liner assembly configured to line a cylinder around a tight top land piston. The cylinder liner assembly includes a cylinder liner having an inner liner surface extending circumferentially about a central axis and an anti-polishing ring.
Claims20
A system, comprising:
- a cylinder liner assembly configured to line a cylinder around a piston, wherein the cylinder liner assembly comprises:
- a cylinder liner comprising an inner liner surface extending circumferentially about a central axis;
- and
- an anti-polishing ring coupled to the cylinder liner, wherein the anti-polishing ring comprises a tapered inner surface extending circumferentially about the central axis;
- wherein a radial distance spanning from an outer radial surface of a top land of the piston at a top end of the top land to the anti-polishing ring is less than 0.34% of a bore diameter of the cylinder;
- wherein a first axial height spanning from a bottom surface of the anti-polishing ring to a top end of the tapered inner surface is greater than half of a second axial height spanning from a top surface of a top ring groove of the piston to an additional top surface of the piston.
3 more elements
A system, comprising:
- a piston comprising a top land;
- a cylinder liner disposed about the piston and configured to line a cylinder, wherein the cylinder liner comprises an inner liner surface extending circumferentially about a central axis of the piston;
- and
- an anti-polishing ring coupled to the cylinder liner, wherein the anti-polishing ring comprises a tapered portion, and the tapered portion is configured to overlap the top land when the piston is disposed in a top dead center position;
- wherein a radial distance spanning from an outer radial surface of the top land at a top end of the top land to the anti-polishing ring is less than 0.34% of a bore diameter of the cylinder;
- wherein a first axial height spanning from a bottom surface of the anti-polishing ring to a top end of the tapered inner surface is greater than half of a second axial height spanning from a top surface of a top ring groove of the piston to an additional top surface of the piston.
3 more elements
A method, comprising:
- providing a cylinder liner comprising an inner liner surface extending circumferentially about a central axis;
- and
- providing an anti-polishing ring, wherein the cylinder liner and the anti-polishing ring are portions of a cylinder liner assembly configured to line a cylinder around a piston, wherein the anti-polishing ring comprises a tapered inner surface extending circumferentially about the central axis, wherein a radial distance spanning from an outer radial surface of a top land of the piston at a top end of the top land to the anti-polishing ring is less than 0.34% of a bore diameter of the cylinder, wherein a first axial height spanning from a bottom surface of the anti-polishing ring to a top end of the tapered inner surface is greater than half of a second axial height spanning from a top surface of a top ring groove of the piston to an additional top surface of the piston.
Dependencies are inferred from the claim text.