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:

The greater mass flow-rate provides more oxygen to support combustion than would be available in a naturally-aspirated engine, which allows more fuel to be provided and more work to be done per cycle, increasing power output.

See also: Compressor, Intercooler, Internal Combustion Engine, Normally Aspirated Engine, Turbocharger, Volumetric Efficiency.

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Subjects: Engines