Thrust vectoring internal combustion engine

This is rotary engine which uses reciprocating action of piston for compression to retain high compression ratio.Two phase compression increases compression ratio. It uses special type of multipurpose front dwell bilaterally driven scotch yoke actuator..

1. Reciprocating Rotary Engine
Dr. Ravi Shankar Gautam
[email protected]
(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 Compression Ignition 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
->Reciprocratingaction 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 coming through a bent nozzle
produces a rotatorymotion
Fighter planes
vertical lifts using thrust vectoring

8. Advantages
•Exhaust of gas do 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 (Rotatorymotion)
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 rearwardlyextended
-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 Operation chamber (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

14. Front
Side
Rear Side

15. Flywheel
Nozzle
Seal
Solenoid

16. cyl2
cyl1
Nozzle
Seal
Ignition Chamber

17. Nozzle

18. FPC

20. Scotch Yoke Actuator
Salient features
•bilaterally operated multi purpose scotch yoke
•bilaterally operated slot (bipartitionedslot)
•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
•bipartitionedslot
left right sub-slots
•bilateral crank-pin set
ball bearing with pin
each pin engages one sub-slot

22. •Yoke rod
-continuous rod 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
-front yoke rod support, (YRS1)
-rear yoke rod support (YRS2)
Advantages
-No torsionaltwisting
-rotational force distributed over larger space
-lesser sideward thrust and hence lesser friction

24. Multi-Slot-Scotch-Yoke Actuator(Configuration)
•Two pins -moving in yoke slot in opposite direction
•Two Cranks -rotate in opposite direction

28. Multi-Slot-Scotch-Yoke Actuator(function)
-Suction & Compression
-Rotation ->Translation
-Reciprocratingmotion
-Passage of compressed fuel from
compression chamber to ignition chamber

29. Multi-Slot-Scotch-Yoke operation mechanism
-Coupling between 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 Supply and 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)

33. Ignition
chamber
PIN
CRANK
YOKE
Fu
el
val
ve
Spark
Plug
YOKE
Slot

34. Improvement for high torque
(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

35. Single-Exit Nozzle (straight)

36. Single-Exit Nozzle (curved)

37. Single-Exit Nozzle

38. Multi-Exit Nozzle

39. Thank You