INTERNAL COMBUSTION ENGINE "NORMAS" N 51 STEALTH DRONE Russian patent published in 2023 - IPC F02B41/02 

FIELD: internal combustion engines.

SUBSTANCE: invention can be used in internal combustion engines. A two-stroke internal combustion engine is characterized in that the prefabricated housing is assembled from modules (01) with a working stroke and with the ability to operate on kerosene-gas oil fractions, modules (02) with continued expansion of exhaust gases and a rotation synchronization module with power take-off units. The rotation synchronization module includes a number of spur gears and a chain sprocket (25), mounted respectively with an interference fit on the shafts (05), (06) to enable the transmission of torque with a higher frequency of synchronous rotation and on the air shafts perpendicular to each other. kerosene turbine with introduced elements of the conical differential (21). One axis of the conical differential (21) is the axis of the mirror image of the coordinate grid with the center of (00) symmetry, the only element of the mosaic of which is a convex pentagon, the internal angles of which are 90, 105, 135, 60 and 150 degrees, and three of the five sides of which are equal half of the fourth side. The diameter of the pistons and cylinders, taking into account the necessary clearances, is equal to the length of one of the three equal sides of this convex pentagon. To increase the degree of compression of the air entering the cylinders and the conversion of the internal combustion engine to fuel of kerosene-gas oil fractions, semi-cylindrical backstage with a block of built-in check valves and with the ability to perform a limited rectilinear reciprocating movement are introduced. Immediately after 90° rotation of the shafts from TDC, continued expansion of the exhaust gases occurs. The piston, moving by inertia in modules (01) with a working stroke, has not yet come up with the possibility of changing the motion vector to the opposite one. Synchronous and more uniform rotation of the shafts is ensured both by the presence of inertial cheeks, and by the fact that the working strokes, as well as other cycles in the cylinders of the corresponding modules (01), (02) are not performed at the same time, but have the possibility of 180° rotation of these shafts alternate sequentially. The synchronization module ensures the transmission of torque with a higher rotational speed to the propellers, including those of the air-kerosene turbine. The air-kerosene turbine has the ability to turn 90° with the screw up, as well as to return to its original position. To reduce the thermal diffusivity of the surface of the piston bottoms and the body of the cylinder covers, they are made by co-sintering with their reinforcement with plates with perforated holes. The inclination of the plates to the surface that is in contact with the combustion zone is equal to the angle of 90°.

EFFECT: providing the maximum possible torque and in the implementation of the uniformity of rotation on the output power take-off shafts.

2 cl, 4 dwg