12-12-2012, 06:01 PM
Wankel Rotary Engine
1Wankel Rotary.ppt (Size: 5.67 MB / Downloads: 82)
-It was designed by German engineer Felix Wankel in 1954.
- It is extremely lightweight and small as compared to piston engines with similar power output.
-Due to its light weight it is used in aircraft and nowadays in cars.
A rotary engine is an internal combustion engine,
which works in a completely different way than the conventional piston engine.
In a piston engine, the same volume of space
alternately does four different jobs -- intake, compression , combustion and exhaust.
Where as in a rotary engine all these four jobs happens in its own part of the housing.
Advantages of rotary engines
The Power to weight ratio is superior than piston engines.
Smooth power flow and high RPM.
No Seizure at high temperature.
Vibration is very less due to no reciprocating parts.
Qualities of rotary engine
It 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.
There are only about three moving parts creating less friction and less possibility for error
summary
The Wankel Rotary engine is still a promising piece of technology.
The main drawback of it is that they are not as fuel efficient as piston engine.
Still car manufacturer company “Mazda” continues to spend money on the concept with the hope of improving its fuel efficiency.
It is a Good example of thinking outside the box .
Also it informs engineers that there are alternatives to the conventional four stroke cylinder engine.