PISTON ENGINE OF TWO-CYLINDER DESIGN Russian patent published in 2023 - IPC F02B41/04 F02B75/02 

FIELD: engine building.

SUBSTANCE: four-stroke reciprocating internal diesel combustion engine is proposed, containing cylinders 1, 2 with pistons 5, 6 connected to the crankshaft 18, an air supply system and a gas distribution mechanism with a camshaft 13 and with inlet 7, 8 and outlet 11, 12 valves, a fuel system with high pressure pump 15. The engine contains a pre-compression cylinder 1, a main cylinder 2 and a regenerator 14 for heating the air passing from the pre-compression cylinder 1 to the main cylinder 2 due to the heat of the outgoing combustion products. Cylinders 1 and 2 of the engine are made with the same piston stroke and different volumes. In the working chamber of the main cylinder 1, the air from the pre-compression cylinder 1 is compressed, fuel is injected through the nozzle 17, fuel is burned, and the combustion products are subsequently expanded to atmospheric pressure.

EFFECT: improved organization of the engine operating cycle with the achievement of the self-ignition temperature of the fuel at a lower air pressure value; increasing the thermal and effective efficiency of the engine; reducing the noise level from the engine and reducing the emission of harmful substances with exhaust gases.

1 cl, 11 dwg, 2 tbl