CONROD-FREE INTERNAL COMBUSTION ENGINE Russian patent published in 2025 - IPC F02B75/32 

FIELD: machine building.

SUBSTANCE: invention can be used in internal combustion engines. Conrod-free internal combustion engine comprises housing (1), two cams shaped to truncated cone (4) with closed wavy grooves on their surfaces. Two cylinder blocks (5) are located symmetrically to each other relative to cone (4) base plane. Each block (5) has at least one cylinder (6). Pistons (7), pushers (8) with transfer heads (9) and guides (11) of pushers (8) are located in cylinders (6). There are power supply, ignition, gas distribution, exhaust and power take-off systems. Engine is equipped with covers of guides, two oil pumps, two bearing assemblies (3) and axle (2) of cams. Truncated cones (4), in the form of which the cams are made, are hollow. At least two closed wavy grooves with irregular wave length and height are made on the inner surface of the cones. Grooves have truncated sphere profile in cross section, with which transfer balls (10) and transfer heads (9) of pushers interact. On the surfaces of transmitting heads (9) facing cone (4) there are at least two grooves having a truncated sphere profile, which interact with the other part of transfer balls (10). During engine operation, pressure of expanding gases through piston (7) and pusher (8) presses on transfer head (9), which through transfer ball (10) presses on groove wall, as a result, on cone (4) and axis of cams (2) torque is generated.

EFFECT: reduction of loads acting on elements of mechanism for conversion of reciprocating movement of piston into rotary movement of axis of cams.

7 cl, 7 dwg