PISTON TWO-STROKE INTERNAL COMBUSTION ENGINE Russian patent published in 2021 - IPC F02B29/00 F15C1/16 

FIELD: engine building.

SUBSTANCE: invention relates to the field of engine building, namely to a two-stroke internal combustion engine, and can be used in vehicles, household machines and power engineering. The proposed two-stroke piston internal combustion engine contains a crank chamber (1), a connecting rod (2), a piston (3), a cylinder (4), a purge channel (5), an exhaust channel (6), an inlet channel (7), a spark plug ( 8), a combustion chamber (9), a check valve in the form of a curved tube (10) with pairs of inclined plates (11), which are directed towards the axis of the cylinder (4) and are inclined to the axis of the tube (10) at an angle of 30-60 degrees. The connecting rod (2) is mounted on the crankshaft (12). During the downward stroke of the piston (3), the volume of the chamber (1) decreases, the pressure in it increases, and the air-fuel mixture from it through the channel (5) enters the cylinder (4), displacing the remaining exhaust gases from it through the channel (6). The movement of this mixture into the inlet pipe is prevented by plates (11) in the curved tube (10). After the piston (3) reaches the bottom dead center, it moves up, compresses the air-fuel mixture in the cylinder (4) and reaches the top dead center position, when all the compressed air-fuel mixture is in the combustion chamber (9). During the upward movement of the piston (3), a vacuum is created in the chamber (1) and the fuel-air mixture through the tube (10) with the plates (11), which practically do not resist the flow, fills the chamber (1). At the end of the stroke of the piston (3), a high voltage is applied to the spark plug (8) upward, a spark flashes on its electrodes, the air-fuel mixture burns out with the formation of hot gases under high pressure. These gases press on the piston, which, under their action, goes down, and the cycle repeats.

EFFECT: increased efficiency, reliability and service life at high speed.

3 cl, 8 dwg