Invention Grant
US08770590B2 Oil control ring 有权
控油环

Oil control ring
Abstract:
An oil scraper piston ring includes a ring body having two radial outer running webs on the ring body, which are arranged one behind the other in relation to the run direction of the piston and are spaced apart from one another by an external depression. Each running web respectively has two scraper lips and a wear protection coating is provided on each scraper lip.
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