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Thrust vectoring internal combustion engine
- 1. Reciprocating Rotary Engine Dr.Ravi Shankar Gautam ravishankargautam@gmail.com (Thrust vectoring Ignition Chamber) Indian Patent No. 201821027867
- 2. Overview •Ignition chamber rotates -Compressed fuel is ignited -> ignited gas exiting through transversely oriented nozzles cause -> rotation of ignition chamber •Flywheel - coaxially mounted ignition chamber
- 3. Challenges •Fuel Suction CompressionIgnition into/inside rotating Ignition chamber •Nozzle operation close/open of Nozzles of rotating Ignition chamber
- 4. Overcome challenges • Converting(part of) rotation of ignition chamber ->Reciprocrating action of piston ->Fuel suction and compression and passage of compressed fuel into ignition chamber Apparatus used Multipurpose bilaterally operated front dwell scotch yoke actuator
- 7. Example Garden Sprinkler: Water comingthrough a bent nozzle produces a rotatory motion Fighter planes vertical lifts using thrust vectoring
- 8. Advantages •Exhaust of gasdo not require extra stroke •Half rotation of flywheel one combustion •Two phase compression - reduces traversal distance of scotch yoke required for higher compression ratio - Reduces the length of ignition chamber required for higher amount of fuel - lesser weight of ignition chamber
- 9. Thrust vectoring Engine(parts) Front Side (Rotatory motion) Ignition Chamber Flywheel Ignition spark plug Rear Side (Fuel suction supply & Compression) : Auxiliary Compression chamber Scotch Yoke operation chamber Front Piston chamber Scotch-Yoke actuator Scotch-Yoke operation mechanism
- 10. Ignition Chamber (IC) Enclosure:Two Coaxial cylinder Capped at front end - transversely oriented coupled nozzle - Nozzles with open/close valve: Single Exit on each side - Internal cylinder rearwardly extended - cam gear (crown gear with rearward teeth) mounted - rearward extension of internal cylinder - flywheel gear coaxially mounted front end
- 11. Auxiliary Compression chamber(ACC) •cylindrical enclosure radius greater than ignition chamber •rear side – fuel inlet (popette) valve connected to fuel source •Rear piston plate of scotch yoke actuator Nozzle & its operation Nozzle seal - solenoid operated – annular cylindrical shutter - Annular cavity
- 12. •Scotch Yoke Operationchamber (SOC) Enclosure: rectangular enclosure - Between auxiliary compression chamber and ignition chamber - Yoke slot (bipartitioned) - bilateral Crank-Pin set(s) of scotch yoke actuator (operating yoke slots) - Scotch yoke operation mechanism (bilateral Cam follower gears operating Crank-Pin set(s)) - Support rods of scotch yoke (Front and Rear support rods)
- 13. Front piston chamber(FPC) •Cylindrical tube coaxial to ignition chamber •Front side of SOC •Front piston plate of scotch yoke actuator •Spark plug
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- 20. Scotch Yoke Actuator Salientfeatures •bilaterally operated multi purpose scotch yoke •bilaterally operated slot (bipartitioned slot) •front dwell yoke slot (time for fuel combustion exiting through nozzle generation rotation force) •double action - piston plates on both ends of yoke •Passage for compressed gas - piston plates with hole at center mounted with pressure valves - Yoke is continuous rod with longitudinal hole - Yoke passes through yoke slots
- 21. Scotch Yoke Actuator(SYA) Parts and Assembly •bipartitioned slot left right sub-slots •bilateral crank-pin set ball bearing with pin each pin engages one sub-slot
- 22. •Yoke rod - continuousrod passing through yoke slot - longitudinal passage hole along its length •Piston plates - front and rear end of yoke rod - hole mounted with pressure valve - valve opening into and out of yoke rod passage - rear piston plate in ACC - front piston plate FPC (Ignition chamber)
- 23. •Support rods - frontyoke rod support, (YRS1) - rear yoke rod support (YRS2) Advantages - No torsional twisting - rotational force distributed over larger space - lesser sideward thrust and hence lesser friction
- 24. Multi-Slot-Scotch-Yoke Actuator (Configuration) •Twopins - moving in yoke slot in opposite direction •Two Cranks - rotate in opposite direction
- 28. Multi-Slot-Scotch-Yoke Actuator (function) -Suction & Compression - Rotation ->Translation - Reciprocrating motion - Passage of compressed fuel from compression chamber to ignition chamber
- 29. Multi-Slot-Scotch-Yoke operation mechanism -Couplingbetween Cam Gear (IC) and Scotch-Yoke Actuator - Cam follower gear left and right side SOC - Cam axis connect cam follower gear to crank gear - operate crank gear (which in turn operate yoke slot)
- 30. •Coupling between rotatorymotion of Ignition chamber and Scotch yoke actuator -> convert rotation to reciprocating motion of piston -> Fuel Suction/Compression/Supply/Compression
- 32. Fuel Suction Supplyand Compression Two Phase Compression •Compression chamber (Rearward motion of scotch yoke) •Ignition chamber (Forward motion of scotch yoke) •Fuel Suction in Compression chamber (Forward motion of scotch yoke) •Fuel Supply to Ignition chamber (Rearward motion of scotch yoke)
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- 34. Improvement for hightorque (Indian patent 201821035766) •Nozzles with open/close valve: multi-section seal •Single-internal-Multi-outer-Exit - single outlet in internal cylinder of IC - branch into multi outlet at outer cylinder of IC
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