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Quasi-turbine- The very efficient rotary engine in Mechanical field.


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The next generation rotary engine- Mechanical engineering.

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Quasi-turbine- The very efficient rotary engine in Mechanical field.

  1. 1. QUASI-TURBINE THE NEXT GENERATION ROTARY ENGINE Presentation by: Rajnish Bhusal Smriti Jha - Department of Mechanical Engineering, Reva ITM, Bangalore.
  2. 2. • ENGINES TODAY! • Reciprocating • Rotary Intake Compression Ignition Expansion Exhaust Energy Overview of Piston Engine Superior in past 2 centuries Combustion occurs intermittently 4 stroke Piston makes positive torque only 17% of time and drags 83% of time Many reciprocating parts Problem in Balancing of engine Higher hydrocarbon emissions Pollution
  3. 3. Rotary Engine (Wankel Engine) • three-sided symmetric rotor • No reciprocating parts • Has problem in rotor sealing • Very slow combustion • Poor emissions Major Problem Pollution Not Used often
  4. 4. Quasi-Turbine (QURBINE) – Introduced by Dr. Gilles Saint- Hilaire – Uses rotor and housing design CONSTRUCTION Two types of quasiturbine engine model • Quasiturbine Model without Carriages • Quasiturbine Model with Carriages
  5. 5. QURBINE WITHOUT CARRIAGES • An oval housing • Four sided rotor • Inlet and exhaust port • Spark plug
  6. 6. QURBINE WITH CARRIAGES • Modifications for allowing Photo-detonation • 4 carriages • Each carriage consist 2 wheels • Each blade has a filler tip and traction slots • A pivot forms the end of each blade
  7. 7. Working of Quasi-turbine Motion of rotor Shape of housing • Sequentially arranged Four Strokes Suction- Charge Pushes the rotor forward and starts its rotation Compression- Volume of chamber formed is too small tremendous compression Combustion- Ignition Complete combustion Tremendous Energy Continuous combustion Exhaust Rotor gets closer and away from housing Compression and Expansion High compression ratio
  8. 8. • Combustion Modes in Engines and Quasi-Turbine • If you ask a chemist: “ What may be the best method of combustion?” • Answer would be: “ Photo-detonation” Four Types of Internal Combustion Engines Homogenous Fuel-air Mixture Heterogeneous Fuel-air Mixture Spark-ignition Type I Gasoline Engine Type II Gasoline Direct-injection (GDI) Engine Pressure-heated Self- ignition Type IV Photo-detonation Engine Type III Diesel Engine
  9. 9. Photo-detonation in QT • Possess Best attributes of the gasoline and diesel engine • Tremendous compression fuel self-ignites. • Employs homogeneous charge + compression ignition. Homogeneous Charge Compression Ignition • Rapid increase in Compression temperature • The combustion is then driven by the intense radiation in the chamber. • Complete combustion of the fuel, leaving behind no hydrocarbons
  10. 10. Why Quasi-turbine is only Compatible for PD? Research Best mode of Combustion Photo-detonation Extremely High Compression Ratio Requires Reciprocating Engine Knocking
  11. 11. Pecularities of Qurbine • Lets see what happens when comparing a 50cc four-stroke piston engine with a QT 50cc Quasiturbine at the same rpm. Both engines have 50 cc maximum chamber volumes. The piston engine will intake 50cc every 2 revolutions, while the Quasiturbine intakes 8 chambers x 50cc = 400cc in 2 revolutions. The Quasiturbine will intake 8 times more chambers and fuel-mixture, and produces something like 10 times more power. Zero Vibration Less Noisy Less Pollution Continuous Combustion with lower temperature Better torque continuity and acceleration Compatible with Hydrogen
  12. 12. Limitations • Construction of rotor is bit difficult. • Differential thermal expansion or contraction in copper and aluminum material lead to some incidences of leakage.
  13. 13. APPLICATIONS • High power-to-weight ratio Aircrafts • No vibration Chainsaws, Snowmobiles, Parachutes, light boats • Air Compressors, Supercharger • Racing Cars, Pneumatic Engines • Steam Vehicle
  14. 14. Conclusion • Problems in developing next generation piston engine • Several hundred million dollars can be saved in research spending • This world requires more energy sector industry than computer industry • Qurbine is the ideal motor for vehicles with Zero Vibration Lighter Less noisy More efficient Less pollutant (meets the Kyoto Protocol) • What else we want!! SO LETS PONDER ON IT!!!
  15. 15. THANK YOU!!! And Welcome to Post Piston Engine Era