Cylinder liner assembly having air gap insulation
AssigneeCaterpillar Inc.
InventorsBradley L. Morgan, James A. Subatch, JR., Michael James Pollard
Life of this patent
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Abstract
A cylinder liner assembly is disclosed for use with an engine. The cylinder liner assembly may have a liner with a hollow, generally cylindrical body extending from a top end to a bottom end along a longitudinal axis. The cylinder liner assembly may also have a seal disposed around the liner at the top end and an anti-polishing ring disposed within the top end of the liner. The anti-polishing ring may have an annular groove formed on an outer surface to provide an air gap between the anti-polishing ring and the liner. The annular groove may axially overlap at least a portion of the seal.
Claims20
A cylinder liner assembly, comprising:
- a liner having a hollow, generally cylindrical body extending from a top end to a bottom end along a longitudinal axis;
- a seal disposed around the liner at the top end;
- and
- an anti-polishing ring disposed within the top end of the liner, the anti-polishing ring having an annular groove formed on an outer surface to provide an air gap between the anti-polishing ring and the liner,
- wherein the annular groove axially overlaps at least a portion of the seal.
An anti-polishing ring, comprising:
- a hollow, generally cylindrical body;
- a single annular groove formed on an outer surface of the hollow, generally cylindrical body to provide an air gap around the anti-polishing ring;
- and
- a pair of feet disposed at opposing ends of the single annular groove.
An engine, comprising:
- a cylinder block at least partially defining a plurality of cylinder bores;
- a cylinder liner assembly disposed within each of the plurality of cylinder bores;
- and
- a water jacket formed between an annular wall of each cylinder liner assembly and a corresponding one of the plurality of cylinder bores,
- wherein each cylinder liner assembly includes:
- a liner having a hollow generally cylindrical body extending from a top end to a bottom end along a longitudinal axis, the liner having a flange having a block-engaging surface located an axial length from a top surface that is 25-60% of a length of the liner;
- a seal disposed around the liner at the top end;
- and
- an anti-polishing ring disposed within the top end of the liner, the anti-polishing ring including a single annular groove formed on an outer surface and centered axially with the seal, a first foot on a first end of the single annular groove, and a second foot on a second end of the single annular groove, wherein the single annular groove provides an air gap between the anti-polishing ring and the liner.
Dependencies are inferred from the claim text.