Compression piston ring for an internal combustion engine
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United States of America Patent
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Oct 30, 2018
Grant Date -
Sep 24, 2015
app pub date -
Mar 18, 2014
filing date -
Mar 18, 2014
priority date (Note) -
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Abstract
A compression ring for an engine piston includes an upper and lower face, and an inner face positioned between the upper and lower faces along an inner diameter of the ring. An outer face is positioned between the upper and lower faces along an outer diameter of the ring and is formed by a continuous curve along the axial direction of the ring. The continuous curve has first and second convex surfaces connected by a concave surface with each convex surface defined by first and second radii, respectively. A method of forming a piston compression ring includes machining an outer face of the ring to form a continuous curve along an axial direction of the ring, where the continuous curve has a first convex section and a second convex section connected by an intermediate section.
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