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
- the axial length (L) of the bearing surface leg (8) varies in the circumferential direction.
Dependencies are inferred from the claim text.