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US 9,982,715 B2Granted
Sliding engine component
AssigneesMahle International GmbH, Mahle Engine Systems UK Ltd
InventorsRoger Gorges, John Carey, Anil Rathod
Life of this patent
Estimating the term…
Abstract
A sliding engine component may include a sliding surface including a plastics polymer-based composite layer disposed on a substrate. The composite layer may include a matrix of plastics polymer-based material. The plastics polymer-based material may have 0.1 to 20 percent by volume of liquid-filled microcapsules distributed throughout the matrix, and incidental impurities.
Claims29
A sliding engine component, comprising:
- a sliding surface including a plastics polymer-based composite layer disposed on a substrate, the composite layer including:
- a matrix of plastics polymer-based material including a polyimide-amide material and having distributed throughout the matrix:
- 0.1 to 20% volume of liquid-filled microcapsules;
- incidental impurities;
- and
- wherein the liquid-filled microcapsules include a shell of a polymeric material resistant to dissolution in a solvent system including at least one of a non-polar solvent and a polar aprotic solvent, wherein the shell of the liquid-filled microcapsules includes at least one of:
- (i) a functionalised exterior surface having at least one of a surface charge, a hydrophilic surface and a hydrophobic surface, and (ii) a coating providing a metalized exterior surface, and wherein the at least one of the functionalised exterior surface and the coating promotes suspension of the liquid-filled microcapsules within a solution of the composite layer prior to deposition of the composite layer onto the substrate.
4 more elements
A method of manufacturing a sliding engine component, comprising:
- providing a solvent, wherein the solvent includes at least one of a non-polar solvent and a polar aprotic solvent;
- adding a plastics polymer-based resin material and liquid-filled microcapsules to the solvent and intermixing the plastics polymer-based resin material and liquid-filled microcapsules to provide a solvent mixture, wherein the liquid-filled microcapsules include a shell of a polymeric material resistant to dissolution in the solvent;
- coating the solvent mixture onto a substrate to provide a plastics polymer-based composite layer on the substrate composed of a plastics polymer-based material matrix including from 0.1 to 20 percent volume of the liquid-filled microcapsules and incidental impurities distributed throughout the plastics polymer-based material matrix;
- and
- treating the solvent mixture so as to remove the solvent and consolidate the plastics polymer-based material matrix.
2 more elements
A sliding engine component, comprising:
- a plastics polymer-based composite layer disposed on a metallic substrate, the plastics polymer-based composite layer composed of a plastics polymer-based material matrix including from 0.1 to 20% volume of liquid-filled microcapsules distributed throughout the plastics polymer-based material matrix and incidental impurities;
- wherein the plastics polymer-based composite layer includes a first sub-layer and a second sub-layer overlaying the metallic substrate one on top of the other, the second sub-layer disposed between the metallic substrate and the first sub-layer;
- and
- wherein the liquid-filled microcapsules are embedded throughout the first sub-layer and the second sub-layer of the plastics polymer-based composite layer, and the first sub-layer has a different concentration by percent volume of the liquid-filled microcapsules than the second sub-layer.
1 more element
Dependencies are inferred from the claim text.