FIELD: engine technology.
SUBSTANCE: invention relates to engine building. A two-stroke internal combustion engine contains a housing (1), a movable cylinder (2) having a head (3) and a bottom (4) mounted in the housing (1) with the possibility of reciprocating motion and connected to a motion conversion mechanism. The working piston (5) with the bottom (6) is installed inside the movable cylinder (2) with the possibility of moving with the movable cylinder (2) in opposite directions and forming a working chamber (7) between the bottoms (4, 6) of the working piston (5) and the head (3). The working chamber (7) has purge windows (8) and exhaust windows (9) made in a movable cylinder (2). Between the cylindrical surfaces of the working piston (5) and the movable cylinder (2) there is a gas distribution sleeve (10) with the possibility of closing the exhaust windows (9). Purge windows (8) are made in the gas distribution sleeve (10) and are located with the possibility of their closure by the working piston (5).
EFFECT: increase in the efficiency of the engine.
4 cl, 3 dwg
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