FIELD: engine building.
SUBSTANCE: invention relates to three-element oil scraper piston ring (2) with upper disk-like oil scraper ring (4), with lower disk-like stabilizing ring (6), as well as with circular expander (8), which has on inner side protrusions (10) passing in axial direction, and which is located between upper oil ring (4) and lower stabilizing ring (6), wherein protrusions (10) adjoin from the inside to inner side (14) of the oil scraper ring (4) or to inner side (16) of stabilizing ring (6), and wherein external radius (18) of oil scraper ring (4) is greater than outer radius (20) of lower stabilizing ring (6), so that difference 6 of radii of oil scraper ring (4) and stabilizing ring (6) takes place.
EFFECT: invention reduces losses for friction of internal combustion engine due to reduced friction created by oil scraper ring.
14 cl, 8 dwg
| Title | Year | Author | Number |
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RU2733910C2 |
