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Wankel engine

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  • 1. THE WANKEL ENGINE
  • 2. Wankle Engine History Cylinder is Rotary Engine Part of The Wankle Engine Chalenges & Difficulties
  • 3. WHY THE WANKEL?  To further our modeling skills  Obtain a better understanding of the workings of the rotary engine and the thermodynamic cycles that go on within  Transmission was also a challenging piece of machinery  Good example of thinking outside the box  To inform people that there are alternatives to the conventional four stroke cylinder engine
  • 4. HISTORY  Designed by German engineer Felix Wankel in 1954  Manufactured mainly by Mazda, currently used in Mazda RX-8  Extremely lightweight and small when compared to engines with similar power output  Used in a lot of aircraft  Main disadvantage is fuel inefficiency
  • 5. CYLINDER VS ROTARY ENGINES  Uses pistons to regulate intake and exhaust of fuel and gas.  All four strokes, intake compression, combustion and exhaust occur in same cylinder.  Pistons continually reverse direction creating more wear and tear on the engine  Bad power to weight ratio in comparison  Lower rev limit  Has a spinning rotor that creates three separate chambers and regulates the inflow and outflow of gasses.  Each chamber draws in air and fuel, is compressed, ignited and combusted then expelled creating power while at the same time forcing the other two chambers to do the same.  Rotors move in a continuous direction making it smoother  Only about three moving parts creating less friction and less possibility for error
  • 6. PART OF THE WANKLE ENGINE  Intake  Compression  Ignition/Combustion  Exhaust
  • 7. INTAKE AND COMPRESSION
  • 8. COMBUSTION AND EXHAUST
  • 9. WANKLE ANIMATION
  • 10. INNER WORKINGS
  • 11. EXPLODED VIEW
  • 12. ENGINE IN ACTION
  • 13. CHALLENGES & DIFFICULTIES  Transmission • Many moving parts • Gear ratios were very difficult to get right • Constraints started conflicting  Engine • Measurements for rotor pieces and rotor housing were difficult to obtain • Some pieces needed to be generated by equations • Interference between housing and rotor was an issue • Inserting gear constraints between all moving parts was difficult to get right  Assembly • Pieces needed to be continually adjusted to fit together properly
  • 14. SUMMARY  The Wankel Rotary engine is still a promising piece of technology  Mazda continues to spend money on the concept with the hope of improving its fuel efficiency  There are also several other types of rotary engines that run on various types of fuel  We utilized and furthered all the skills taught to us in ProE class including assembly, constraints, sweeps, blends, gear connections, animations

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