FIELD: machine engineering.
SUBSTANCE: piston unit comprises a compression ring (3) and (4) and oil scraper rings (5), (6), (10) and axial expansion ring (11) located in the piston bore (7). According to Embodiment 1 on the surface of the inner diameter of the upper compression ring (3), which may be made of a heat-resistant bronze with minimal friction relative to steel or cast-iron cylinder liner is installed expander (9), which is fixed in an annular groove (8) formed in the bottom piston bore (7) at the level of its upper flange.
EFFECT: invention eliminates the gas-dynamic losses, provides effective heat transfer between the piston head overheated and cooled cylinder and cylinder wall forms on the minimum required the thickness of the oil film.
8 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PISTON UNIT OF THE INTERNAL COMBUSTION ENGINE | 2016 |
|
RU2616686C1 |
| PISTON SEAL OF INTERNAL COMBUSTION ENGINE | 2015 |
|
RU2582538C1 |
| ICE PISTON SCRAPER RING | 2011 |
|
RU2447307C1 |
| PISTON UNITS OF INTERNAL COMBUSTION ENGINE (VERSIONS) | 2015 |
|
RU2613478C1 |
| OIL-REMOVING PISTON UNIT FOR INTERNAL-COMBUSTION ENGINE | 2016 |
|
RU2625419C1 |
| OIL-REMOVING PISTON UNIT FOR INTERNAL-COMBUSTION ENGINE | 2016 |
|
RU2619001C1 |
| PISTON SEAL OF INTERNAL COMBUSTION ENGINE | 2015 |
|
RU2582384C1 |
| ICE PISTON SEAL OIL SCRAPER | 2013 |
|
RU2535599C1 |
| INTERNAL COMBUSTION ENGINE SLEEVE ASSEMBLY | 2016 |
|
RU2651694C1 |
| ICE SLEEVE ASSEMBLY OF INTERNAL COMBUSTION ENGINES | 2016 |
|
RU2624376C1 |
