FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: variable capacity working chambers are formed by dividing members 4 of fixed disks 9 and partitions of cylinder 2 rigidly connected with turnable axle 8. With cylinder 2 and turnable axle being rocked, first gear 15 through toothed rack 19 provides reciprocation of rod 18 and frame 20 in vertical guides 16. Two camp 25 coupled mechanically with turnable axle 8 provided reciprocating motion of bearing supports 23 of intermediate shaft 22 in horizontal guides 17. Second gear 24 secured on intermediate shaft 22 comes periodically into engagement with additional toothed racks 21 found on inner surface of frame 20. Intermediate shaft 22 and second gear 24 rotate in one direction and transmit rotation to output shaft 3 through device for transmitting rotation between shafts with variable positions of axes of rotation, for instance, flexible shaft 26 or propeller shaft mechanism. EFFECT: enlarged operating capabilities. 3 cl, 4 dwg
