FIELD: machine building.
SUBSTANCE: device comprises oil scraper ring and radial expander in piston groove, and inside piston - plate with tabs, which pass through openings in piston and are connected to expander. In plate along its axis there is an opening, and along its edge there is a weight installed in the form of ring. Rocker rod is located inside weight. Under action of inertia force weight moves together with plate along piston axis, and by means of tabs and expander it acts at oil scraper ring. Rod moves in plane of rocker swinging inside weight. In plate there is a round hole, and a round weight is fixed along its edge, inside of which there is a rocker rod.
EFFECT: improved reliability of sealing.
5 dwg
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