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US 12,442,348 B2Granted
Piston for an internal combustion engine
AssigneeFederal-Mogul Nurnberg GmbH
InventorsRainer Weiss, Jens Lehmann, Michael Grabinger, Christian Lindner, Michael Scherer, Ralf Meske, Sven Ungermann
Life of this patent
Estimating the term…
Abstract
A piston for an internal combustion engine includes at least one annular groove in the piston material, preferably the first annular groove closest to the piston crown, which is configured such that, when viewed in cross-section, at least one elliptic curve and/or convex cubic spline is present between a lower flank of the annular groove and an upper flank of the annular groove.
Claims12
A piston for an internal combustion engine, comprising:
- at least one annular groove having an upper flank and a lower flank and configured such that, when viewed in cross-section, at least one portion of an ellipse is present between the lower flank of the annular groove and the upper flank of the annular groove.
Dependencies are inferred from the claim text.