Forced INduction

Supercharging

• A supercharger is a mechanically driven air compressor that forces air into the combustion chamber to increase the engines power output. It is directly driven by the engine through a pulley system so it takes a substantial amount of power to make power. The amount of power that can be needed to drive the supercharger can be up to 20% of the engines power, but the power return from the added supercharger can be up to 50%.

• There are 3 main types of superchargers

  • Roots or blower style supercharger

    • Sometimes referred to as a “blower” style supercharger. The roots supercharger does not compress the air inside the charger its self, it just pulls the air in to be compressed inside the manifold. The power is available immediately at low RPMS since the amount of air in is dependent on the engines RPMS.

  • Centrifugal style

    • They look like a turbocharger but they are driven by the engine itself instead of the by the exhaust gasses. They preform best at higher RPMS but do not provide much boost at lower RPMS. They have a very high thermal efficiency with a smaller size.

  • Twin- screw style supercharger

    • Use two thread rotors to compress air as it turns. Since it uses an internal compression of the air there is high thermal efficiency.