OVAL-CYLINDER INTERNAL COMBUSTION ENGINE WITH SLIDING ROTOR Russian patent published in 2025 - IPC F02B53/00 F02B55/02 

FIELD: engines.

SUBSTANCE: invention can be used in propulsion engineering. Oval-cylinder internal combustion engine with sliding rotor consists of two cylinders (1), one central bulkhead with installed in it central part of shaft with bearing, two end bulkheads with inlet and outlet gas-dynamic openings. In bulkheads there installed are end parts of shaft with bearings and rotation gears of shutters of gas-dynamic openings. Two rotors divide cavities of cylinders into chambers of variable volume and have a frame with windows cut in it. Gas-dynamic dampers of inlet and outlet openings of end bulkheads having disk-like shape with external gearing and cut-out internal segment. Covers of end bulkheads are provided with gas inlet and outlet connection pipes and with holes for end parts of the shaft and external nozzles of end parts of the shaft, which are intended to drive auxiliary mechanisms. Cross-section geometry of inner cavity (w) of cylinder (1) is an ellipse. Inner cavity of each cylinder has two channels (c) for motion of rotor stops (5). In lower part of each channel there is oil supply hole (m) for lubrication of rotor stops. Cylinders (1) are interconnected by central web with hole to receive central part of shaft (2) with bearing. End bulkhead with inlet and outlet openings is installed at the end of each cylinder. In inner cavity of cylinder (1) there located is rotor dividing inner cavity of cylinder into two chambers of variable volume and engaged with central and end parts of shaft (2). Rotor allows combining rotary and sliding reciprocation relative to shaft axis (o). Rotor consists of frame (3) with openings (wr) and bulky straps (4). Rotor has stops (5) arranged in frame cutouts. Rotor frame accommodates flat replaceable straps. Composite shaft (2) consists of central and two end parts and rotational axis (o) shifted vertically relative to cylinder cross-section centre. Disk gates of gas-dynamic openings of the end bulkhead are engaged by means of gearing with the gear of the end part of the shaft and rotated making a complete revolution per two revolutions of the shaft. Said shutters have cutout segment. Tight cover of end bulkhead is installed on end bulkhead, which has hole for output of end part of shaft, as well as branch pipe (21) for inlet of fuel-air mixture and branch pipe (22) for exhaust of exhaust gases. Engine is equipped with removable tank (6) with cooling liquid. Nozzles of drive of auxiliary mechanisms are located on end parts of shaft, beyond covers of end partitions.

EFFECT: creation of a compact, simple engine consisting of a minimum number of parts.

1 cl, 5 dwg