Piston ring having a wear protection layer containing particles, method for production and use
AssigneeFederal-Mogul Burscheid GmbH
InventorsStefan Dürdoth, Anika Distelrath-Lübeck
Life of this patent
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Abstract
A piston ring for internal combustion engines is provided, having a surface comprising a wear protection layer of iron or an iron alloy applied to the surface, wherein the wear protection layer has cracks and the cracks have an average density of 10-160 cracks per mm of the wear protection layer, wherein the iron or iron alloy have incorporated therein 0.2-15% by weight, based on the total weight of the wear protection layer, of carbon particles and 0.2-15% by weight, based on the total weight of the wear protection layer, of solid particles other than carbon particles. Furthermore, a method for manufacturing a piston ring is provided.
Claims15
A piston ring for an internal combustion engine, comprising a wear protection layer of iron or an iron alloy applied to a surface of the piston ring, wherein the wear protection layer has cracks and the cracks have an average density of 10-160 cracks per mm of the wear protection layer, wherein 0.2-15% by weight, based on the total weight of the wear protection layer, of carbon particles and 0.2-15% by weight, based on the total weight of the wear protection layer, of solid particles which are not carbon particles are embedded in the iron or the iron alloy of the wear protection layer.
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Dependencies are inferred from the claim text.