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.
Claims13
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 a different type of particle than the carbon particles are embedded in the iron or the iron alloy of the wear protection layer.
Dependencies are inferred from the claim text.