Supercharger

An air compressor used to force more air into an engine than it can inhale on its own. The term is frequently applied only to mechanically driven compressors, but it actually encompasses all varieties of compressors-including turbochargers. Including:

• Roots
• Lysholm
• Centrifugal
• Crankcase

See also: Internal Combustion Engine, Turbocharger, Volumetric Efficiency.