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What is supercharger in car?

Updated: 4/28/2022
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13y ago

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Superchargers are basically air compressors driven by the crankshaft of the engine. There are two basic types;

Centrifugal - Centrifugal superchargers are similar to the intake side of a turbocharger driven by a gearbox instead of the engine's exhaust. In order to keep the compressor from over-revving, they are geared to operate at their speed limits near the redline of the engine. As a result, they aren't going fast enough to produce reasonable HP gains at lower RPMs; they are very "peaky".

Roots Blower - Old-school airscrews that draw in a fixed volume of air per engine revolution. They make the engine behave like a larger displacement version of itself. At higher RPM, the efficiency of the Roots blower decreases, but at low- and mid-RPMs, where most street cars are driven on a daily basis, they are the best option for moderate HP gains.

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Q: What is supercharger in car?
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What is a electric supercharger?

An electric supercharger is essentially an electric motor run off a car's alternator driving a high speed fan which attempts to force more air into a car's air intake. The idea is the same as a turbocharger or supercharger, the more air and fuel forced into the combustion chamber the more power that will be developed by the engine. The only difference between a turbocharger or supercharger and the electric supercharger is that the electric supercharger is limited by how much power the car's battery and alternator can supply whereas a turbocharger and supercharger is limited by the amount of power the engine can supply which is significantly greater in comparison.


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depending on the size of the supercharger.. 30% to 40%


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Can a turbocharger and supercharger be used at the same time?

Yes. If the engine is built to handle enough boost. Volkswagen makes a production car with a twincharger (supercharger and turbocharger). The supercharger helps cancel out the turbo lag at low rpms


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