CYLINDER-PISTON GROUP OF INTERNAL COMBUSTION ENGINE WITH SLOTTED BLOWING Russian patent published in 2016 - IPC F02F1/22 F02F3/00 F02F5/00 F02F11/00 F16J9/12 

FIELD: engines and pumps.

SUBSTANCE: cylinder-piston group of internal combustion engine with slotted scavenging includes cylinder (1), in which there are inlet and outlet openings (3) and (4), opened by piston (6), first sealing ring (7) installed in annular groove of piston (6) and contacting with the sealed surface of cylinder (1), second sealing ring (8), interacting with the sealed surface of cylinder (1) and installed in annular groove of piston (6) at a distance from the first ring not less than the height of discharge opening (4), and longitudinal seals (11) and (12) contacting with the sealed surface of cylinder (1) in the area of partitions between blow and outlet openings (3) and (4) and installed in the depression (10) of the piston between first and second rings (7) and (8). In each piston depression there are at least two longitudinal seals (11) and (12) contacting with each other with their side surfaces. First seal (11) has at least one sealed groove where the first ring (7) is placed with possibility to seal non-cylindrical flat surfaces of the first ring (7) and sealed groove. Second longitudinal seal (12) has at least one sealed groove where the second ring (8) is placed with possibility to seal flat non-cylindrical surfaces of the second ring (8) and groove.

EFFECT: technical result consists in improvement of reliability of sealing assembly of cylinder-piston group both in annular and longitudinal sealing due to self-adjustment of each group of interacting sealing surfaces of various sealing system elements.

5 cl, 9 dwg