FIELD: engines and pumps.
SUBSTANCE: top oil-scraper ring 3 and bottom oil-scraper ring 6 are fitted in piston groove 7. Expansion ring 4 is arranged between said top and bottom rings and has radial grooves 5 to communicate cavity arranged between cylinder wall 1 and OD surface of ring 4 with bottom cavity of piston ring 7. Note here that total angle of inclination of said rings 3, 6 and 4 makes at least 10 degrees.
EFFECT: higher power, longer life, decreased consumption of fuel and oil.
2 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| OIL WIPER PISTON DEVICE FOR INTERNAL-COMBUSTION ENGINE | 2013 |
|
RU2535514C1 |
| OIL-REMOVING PISTON UNIT FOR INTERNAL-COMBUSTION ENGINE | 2016 |
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RU2619001C1 |
| ICE PISTON SEAL OIL SCRAPER | 2013 |
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| ICE PISTON SCRAPER RING | 2011 |
|
RU2447307C1 |
| ICE OIL PISTON DEVICE | 2014 |
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| PISTON UNITS OF INTERNAL COMBUSTION ENGINE (VERSIONS) | 2015 |
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RU2613478C1 |
| ICE PISTON SCRAPER | 2011 |
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RU2625419C1 |
| PISTON SEAL OF INTERNAL COMBUSTION ENGINE | 2015 |
|
RU2582538C1 |
| BUILTUP PISTON RING | 1998 |
|
RU2145018C1 |
