FIELD: engines and pumps.
SUBSTANCE: piston groove 6 accommodates top scraper 3 and bottom scraper 5 with expansion flexible split ring 4 arranged there between and provided with grooves to communicate the cavity between cylinder wall 1 and outer diameter surface of ring 4 with bottom cavity of piston groove 5. Working surfaces of scrapers 3 and 5 are shaped to remove surplus oil from cylinder wall 1 solely in down motion of piston 2 while required thickness of hydrodynamic lube layer is formed on wall of cylinder 1.
EFFECT: minimum mechanical losses and oil consumption.
3 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ICE PISTON SEAL OIL SCRAPER | 2013 |
|
RU2535599C1 |
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| ICE OIL-SCRAPER RING | 2012 |
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RU2499901C1 |
| ICE PISTON SCRAPER | 2011 |
|
RU2458239C1 |
| CYLINDER-PISTON GROUP OF INTERNAL COMBUSTION ENGINE | 2008 |
|
RU2372508C1 |
