ROTARY INTERNAL COMBUSTION ENGINE Russian patent published in 2002 - IPC

FIELD: transport engineering, power engineering. SUBSTANCE: proposed engine has rotors 3 and 4 with at least two pistons installed coaxially in housing 2, device connecting rotors 3 and 4 providing unidirectional movement of rotors with their stopping in turn. It includes also two groups 11 and 12 of irregular shape gear wheels and lock mechanism made in form of two groups 18 and 19 of plates. First group 11 of gear wheels and first group 18 of plates are mated with first rotor 3. Seconds groups 12 and 19 are mated with second rotor 4. Each group of gear wheels has first wheel 11A (12A) through which mating is done. Said wheel has at least one rim and one projection and smooth profile edge formed by two arcs. Each group of gear wheels has also one or two wheels with at least one gear rim and one smooth section of edge for rolling over projections of first wheel. Each group of plates has one or two plates 18B (19B) with incomplete circle form, one or several uniformly spaced cavities over circumference and one plate 18A (19A) for mating with rotor. Plate 18 (19A) has sections of edge similar in profile with sections of circumference on projecting parts of profile of plates 18B (19B). Gear wheels 11A and 12A and plates 18A and 19A are coupled by common axle of rotation, respectively. Plates 18B and 19B and coupled by gear wheels 11B and 12B and are intercoupled through connecting device. Gear wheels of group 11 and plates of group 18 are spatially orientated relative to each other with provision of synchronization of engagement period of gear wheels with no interaction period of plates, and period of rolling over of gear wheel projection with period of interaction of plates. Gear wheels of group 12 and plates of group 19 are also orientated in similar manner. Invention provides increase of power efficiency of engine owing to maintaining speed of piston closing under-chamber at zero or close to zero level over almost entire working stroke and intake stroke. EFFECT: improved efficiency of engine. 8 cl, 9 dwg