FIELD: machine building.
SUBSTANCE: invention relates to propulsion engineering, particularly, to piston rings. Disclosed is a piston ring for an internal combustion engine comprising at least one recess provided on the side of a piston ring facing the combustion chamber and/or from the combustion chamber, wherein said at least one recess has a bottom profile varying in depth in the circumferential direction of the piston ring. Recesses are intended for arrangement of antifriction material.
EFFECT: technical result is reduction of friction surfaces wear.
15 cl, 5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PISTON RING WITH VARIABLE SURFACE LINE, WHICH CONTAINS THE HIGHEST POINT | 2013 |
|
RU2613793C2 |
| PISTON RING CONTAINING GROOVE AROUND RING CIRCUMFERENCE | 2015 |
|
RU2676826C2 |
| MULTI-ELEMENT OIL-CONTROL PISTON RING WITH REDUCED FRICTION | 2016 |
|
RU2720123C2 |
| TIRE TREAD | 2000 |
|
RU2246408C2 |
| PNEUMATIC TIRE | 2018 |
|
RU2742067C1 |
| AXIAL PISTON ROTARY ENGINE | 1995 |
|
RU2168035C2 |
| PISTON RING WITH GROOVE, WHICH HAS PERIODICALLY VARYING FORMS | 2013 |
|
RU2614313C2 |
| FLAT SPACER AND METHOD OF ITS MAKING | 2001 |
|
RU2273778C2 |
| TWO-COMPONENT OIL SCRAPER RING WITH RIBS EXERTING PRESSURE ON OIL | 2017 |
|
RU2727816C2 |
| PISTON FOR DOUBLE-STROKE DIESEL ENGINE WITH CROSSHEAD | 1998 |
|
RU2190773C2 |
