Two-part oil control ring having axial stabilization and twist compensation
AssigneeFederal-Mogul Burscheid GmbH
InventorsFABIAN RUCH, DIRK BARENREUTER
Life of this patent
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Abstract
The present invention relates to a two-part oil scraper ring, which comprises an L-shaped base body and an axial stabilization element. The L-shaped base body has a ring flank leg, which is pressed against a piston ring groove flank by the axial stabilization element, and a bearing surface leg, on which a scraping web is arranged. A twist compensation is attained by means of a suitable selection—and in particular variation—of hearing surface leg length, ring flank leg length and axial position of the scraping web.
Claims18
A two-part oil scraper ring comprising axial
- stabilization, comprising a base body (4) comprising an essentially L-shaped cross section, which has a bearing surface leg (8) and a ring flank leg (10), which together form two legs of the L-shaped cross section, and
- an axial stabilization element (6), which is arranged so as to bear at least partially on the ring flank leg (10),
- wherein a scraping web (12) is arranged so as to be located externally on the bearing surface leg (8),
- wherein the stabilization element (6) is elastic in the axial direction, and
- wherein an axial length (L) of the bearing surface leg (8) is smaller than an overall axial height (H) of the two-part oil scraper ring, wherein
- axial length (L) of the bearing surface leg (8) varies in the circumferential direction.
The two-part oil scraper ring according to claim 9, wherein the twist of the base body (4) varies in the circumferential direction, wherein the twist is stronger on the ring back (14) than on the joint ends (16).
Dependencies are inferred from the claim text.