Federal-mogul Burscheid Gmbh

Oliver Nickisch

Fabian Ruch

Nigel Gray

A piston ring with improved wear properties has a running surface, an upper ring flank, a lower ring flank, and an inner surface. The piston ring has a radius R, and wherein in a radial section, a running surface contour includes an upper region, a central region, and a lower region. The upper region of the running surface contour has a curvature radius R, which lies between the ring radius R and infinity. The central region of the running surface contour has a curvature radius R, which lies between the ring radius R and infinity. The lower region has a curvature radius R, which is smaller than the ring radius R.

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Burscheid, Germany

Oliver Nickisch