The Project

This Project aims to create a Toyota Limo that no longer reflects as a taxicab... but because of limited funds, this project will be trying to spend as little as possible by buying replicas or used goods .. This project is only done in free time and weekends ..there is no target such as max speed, horsepower, and with no deadline ..

Sunday, July 10, 2011

Twin-screw Superchargers


twin-screw supercharger
Photo courtesy Superchargers Online
Twin-screw supercharger
A twin-screw supercharger operates by pulling air through a pair of meshing lobes that resemble a set of worm gears. Like the Roots supercharger, the air inside a twin-screw supercharger is trapped in pockets created by the rotor lobes. But a twin-screw supercharger compresses the air inside the rotor housing. That's because the rotors have a conical taper, which means the air pockets decrease in size as air moves from the fill side to the discharge side. As the air pockets shrink, the air is squeezed into a smaller space.
twin-screw supercharger
Twin-screw supercharger
This makes twin-screw superchargers more efficient, but they cost more because the screw-type rotors require more precision in the manufacturing process. Some types of twin-screw superchargers sit above the engine like the Roots supercharger. They also make a lot of noise. The compressed air exiting the discharge outlet creates a whine or whistle that must be subdued with noise suppression techniques.

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