AMP - Aviation Maintenance Technician Powerplant Practice Exam

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What is the main function of an intercooler in a turbocharged engine?

To cool the engine oil before circulation

To increase the fuel flow to the engine

To cool the compressed intake air before it enters the engine

The main function of an intercooler in a turbocharged engine is to cool the compressed intake air before it enters the engine. When air is compressed by the turbocharger, its temperature rises significantly due to the laws of thermodynamics. This increase in temperature can lower the air density, leading to less oxygen entering the combustion chamber. An intercooler mitigates this by allowing the compressed air to cool down, which increases its density. Cooler, denser air means that more oxygen is available for combustion, enhancing engine performance, efficiency, and power output. This is particularly important in turbocharged applications, where maximizing the amount of oxygen-fuel mixture is crucial for achieving optimal power and efficiency.

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To prevent over-speed conditions

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