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
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
4 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
5 Present Day Application 6 Stroke Animation
7 Intake and Compression 8 Combustion and Exhaust 9 Inner Workings 10 Exploded View 11 Engine in Action 12 Challenges Difficulties
Many moving parts
Gear ratios were very difficult to get right
Constraints started conflicting
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
Pieces needed to be continually adjusted to fit together properly
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
14 Thanks Ray
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