Which of the following is NOT a function of the air intake system?

The air intake system is primarily responsible for managing the air entering the engine for combustion, which includes filtering air to ensure that harmful particles do not enter the engine and providing smooth airflow for optimal performance. The functions of filtering air for the engine and smoothing the airflow are crucial aspects of how the air intake system operates, as they directly affect the engine’s efficiency and performance.

While noise control can be a consideration in the design of an intake system, it is not a primary function of the air intake system itself. The collection of noise control measures is more related to the design of the exhaust system and engine components than to the intake function. Thus, the focus of the air intake system remains on air quality and flow rather than on sound management.