Supercharger

In the recent time, you will rarely find vehicles using supercharger. Poor fuel economy is one of the most common disadvantages of this part. But, you will see automakers prefer supercharged engines for a high performance vehicle instead of turbocharger due to turbo lag. You need not to turn at high speed as like as a turbocharged engine. Now a day, you will find new designs of a supercharger, where automakers have improved fuel economy and reduced noise. Basically, superchargers are of two types, and these are as follows:

a. Spiral type super charger
b. Roots supercharger

a. Spiral Type Super Charger: You can also say it the G-type supercharger. When you see it closely, you will find it very similar to the letter “G”. It functions as a positive displacement air pump. When the engine of your vehicle is in operation, a displacer moves inside spirals and compresses the air to a certain pressure. Things could be made easier to you; this part work eccentrically and does not rotate to compress the air. Two eccentric shafts are used to avail this. The first shaft is known as the displacer shaft, which moves and supports the displacer. However, the other part aids to prevent the rotation of displacer. The main function of this displacer is to divide the compressed air in between inner and outer chambers.

 b. Roots Supercharger: You may find this type of supercharger very common in auto industries. This part contains two long rotors. Both rotors contain 2-3 lobes, and air gets trapped in between gaps of rotor lobes. You will also find your engine’s roots supercharger is driven by a chain or a belt.