FIELD: engines and pumps.
SUBSTANCE: invention can be used in internal combustion engines. The piston unit comprises an internal combustion engine piston ring (3) and the scraper ring (4), located in the piston bore (5). The scraper ring (4) is located under the compression ring (3). The total height of the compression and oil scraper rings (3), (4) is not less than their radial thickness. The gap in the oil ring lock (4) is located at 180° concerning the gap in the lock compression ring (3). The clearance between the compression surfaces of the inner diameters of rings and oil scraper (3). (4) and the bottom of the piston bore (5) is equal to the gap between the piston (2) and the cylinder wall (1). The embodiments of the piston unit are disclosed.
EFFECT: invention provides the removal of the gas-dynamic losses and improves the heat transfer between the piston head and the cylinder.
7 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2616686C1 |
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| PISTON SEAL OF INTERNAL COMBUSTION ENGINE | 2015 |
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| ICE SLEEVE ASSEMBLY OF INTERNAL COMBUSTION ENGINES | 2016 |
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RU2619001C1 |
| INTERNAL COMBUSTION ENGINE SLEEVE ASSEMBLY | 2016 |
|
RU2651694C1 |
| ICE PISTON SEAL | 2011 |
|
RU2447306C1 |
| PISTON SEAL OF INTERNAL COMBUSTION ENGINE | 2014 |
|
RU2576405C1 |
