The Wankel rotary engine is a changed kind of internal combustion engine, which operates with a rotor of three triangular shapes rather than regular pistons. It is much different to normal engines, which are mostly used in most vehicles, as it provides smooth power, compact size and a reduced number of moving parts.
Imagine the sound and the feel of a car engine. Most engines are pushed by vibration and noise as they move up and downwards. But what would happen should an engine operate smoother, lighter and simpler? And this is what the Wankel rotary engine provides.
This engine is an invention of a German engineer by the name Felix Wankel, who substituted the normal piston movement with a rotating one. It might appear to be a mere design, but internally, it does all the same functions as a normal engine, just in a totally different manner. Let us deconstruct it in a manner that would make sense.
Wankel Rotary Engine: What is a Wankel?
A Wankel engine is an internal combustion engine in which the rotor is triangular and rotates in an oval chamber. Rather than the movement of the pistons up and down, the rotor turns around and produces power.
To put it simply, it converts fuel power into motion through rotation, as opposed to reciprocation.
Main Parts of the Wankel Engine
There are its main components, which you need to know to understand how it works:
- Rotor- It is a triangle-shaped component that spins around like a piston.
- Housing Oval chamber within which the rotor turns.
- Eccentric Shaft– transforms rotor movement into useful output.
- Apex Seals -Close the rotor edges to avoid leakage.
- Intake/ Exhaust Ports- Let air-fuel in and gases out.
These components cooperate with each other accordingly, so the engine does not seem so noisy and is more balanced.
How the Wankel Engine Works
The Wankel engine is similar to a normal engine in that it is a continuity of the four steps.
Intake
The rotor generates an empty space which draws in air and fuel into the chamber.
Compression
As the rotor is rotating, it squeezes the mixture in a smaller area.
Combustion
The mixture is ignited by spark plugs, which exert a pressure that propels the rotor.
Exhaust
The gases burned are forced through the exhaust port.
Here’s the interesting part:
All this occurs simultaneously in various engine parts. This is why the delivery of power is smooth and flowing.
The reason why Wankel Engines are different
The Wankel engine does not have to stop and restart, as is the case with piston engines, but instead turns in a single direction. This creates:
- Less vibration
- Smoother performance
- Increased power output for its size.
It is almost like the spinning wheel to a bouncing ball.
Advantages of the Wankel Engine
The current engine was popular primarily due to the following peculiar advantages:
- Lighter and smaller than piston engines.
- Fewer moving parts, hence mechanical complexity.
- Courser and arguably vibration-free usage.
- High power-to-weight ratio
- Small size, can fit in small areas.
It became popular in sports cars and racing due to these features.
Wankel Engine Disadvantages
Although it is designed smartly, it has several disadvantages, which restrict its application:
- Low fuel efficiency as compared to piston engines.
- Increased emissions because of partial burning.
- Oil consumption is higher
Maintenance problems with the seals of the apex seals occur.
The impossibility of meeting the modern environmental standards
It is these issues that primarily make Wankel engines not as common as they used to be. The existence of Wankel Engines in the modern world is rare because of the following reasons.
Wankel engines do not dominate these days, although they are innovative. The biggest reasons include:
- Low thermal efficiency
- High fuel consumption
- Problems with emission control.
- Closing problems within the engine.
The modern engines have become much better in that they are efficient and eco-friendly as compared to rotary engines.
Wankel Engine has been used in the following ways
In special applications, such as where compact dimensions and smooth running are important, Wankel engines are still in use even today:
- Sports and racing cars
- Aircraft engines courtesy of lightweight construction.
- Cycles and miniature automobiles.
- Electric vehicles have range extenders.
- Go-karts and watercraft.
They do not necessarily take over the market, and still have niche applications.
Wankel vs Reciprocating Engine
To make this clearer, here is a mere comparison:
Wankel engines run in a circular motion, whereas piston engines run in an up-and-down motion.
- They are not complicated with the number of parts.
- They are more comfortable yet less fuel-saving.
- Piston engines are more efficient for long-term usage.
Wankel rotary engine is among the most innovative concepts in automotive engineering. It questions the established engine operation and presents the innovation of how a complex system can be simplified.
Although it does have drawbacks, the fact that it performs smoothly and was designed compactly still makes it special. It is not an engine; it is a whole new manner of thinking power, and movement.
FAQs
The difference with a Wankel engine?
It operates on a rotating triangular rotor rather than the pistons, so that it is smoother and compact.
Why is it not popular in the modern world?
The reasons are mostly due to low fuel economy, increased emissions, and sealing problems.
Is a Wankel engine more powerful?
It is true, it has a high power-to-weight ratio, which means that it is more powerful in its size.
Which was the most engine-intensive company that used Wankel engines?
The most renowned manufacturer that achieved success in the application of Wankel engines in automobiles is Mazda.
Is there a potential that Wankel engines will be resurrected?
Chances do exist, in particular where the range extenders of e-vehicles, where the efficiency requirement is not equal.
Disclaimer: This paper is educational and informative in nature. Although all has been done to ensure that the information is correct and easily understood, the technical specifications and the real-life working performance might be different in relation to the design, use and any other changes brought about by technological developments.
Also Read:
Piston in Engine Explained: Working, Parts, Types And Common Problems Guide
16 Types of Measuring Tools and Their Uses in Engineering and Construction
Wankel Rotary Engine Explained: Working, Parts, Advantages And Uses
