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Turbocharging

A technology combination that is becoming popular in gasoline engines is GDI coupled with turbocharging. A turbocharger is a turbine and compressor (an air pump) attached to the exhaust system. The hot high velocity exhaust gases turn the turbine blades. The turbocharger’s compressor uses this wasted energy of the exhaust system to pressurize the incoming air. When the air is forced and compressed into the combustion chamber, it provides more air for combustion. This process is called forced induction. When an engine does not have forced induction, it is called a naturally aspirated engine. With more air, more fuel can be used to provide a “boost” of power when needed. A smaller GDI turbo engine can replace a larger traditional engine without sacrificing performance.