ROTARY DIESEL ICE Russian patent published in 2011 - IPC F02B53/08 F02B55/16 F02B3/06 F01C1/22 

FIELD: engines and pumps.

SUBSTANCE: proposed engine comprises stator with epitrochoidal bore to accommodate compressor rotor to perform planetary motion therein and engine rotor, both rotors being separated by a web. Said web has channel to communicated compressor with engine. Said rotors feature triangular section. Aforesaid channel made in said web communicates pressure chamber of compressor with after-suction chamber of the engine. Compressor rotor revolves in synchronism with engine rotor to outrun the latter. Shaft eccentric journals whereon compressor and engine rotors run are turned through 45-60 degrees relative to each other. Compressor rotor forces air into rotary engine via aforesaid channel to reach maximum pressure in compression stroke. Engine stator accommodates two fuel injectors. First injector, as seen along engine rotor rotation, serves to inject fuel charge during engine operating volume decrease. Second injector (for diesel fuel) serves to start and idle rotary engine.

EFFECT: increased compression ratio, higher efficiency, longer life.