What is the primary function of a turbocharger in an engine?

The primary function of a turbocharger in an engine is to increase the power of the engine. A turbocharger is designed to boost an engine's air intake, allowing for more fuel to be burned and thereby increasing the engine's overall output of power. This is achieved by utilizing exhaust gases to spin a turbine that draws in more air through a compressor. As a result, the engine can produce more horsepower without significantly increasing its size or weight.

While a turbocharger can also have secondary benefits, such as improving fuel efficiency by allowing smaller engines to achieve higher power outputs, its main purpose is to enhance the engine's performance. Other options may present benefits associated with turbocharged engines, but the enhancement of power is the core function that defines the purpose of a turbocharger.