What is the primary role of an air intake system?

The primary role of an air intake system is to filter and deliver air to the engine. This system is crucial for the proper functioning of an internal combustion engine, as it ensures that the engine receives a clean supply of air mixed with fuel for combustion. By filtering out contaminants and particles from the air before it enters the engine, the air intake system helps maintain engine performance, efficiency, and longevity.

In addition to filtering, the air intake system also manages the volume of air entering the engine to ensure optimal fuel combustion. Without a properly functioning air intake system, the engine could experience reduced power output, higher emissions, and increased wear on engine components.

The other options do not represent the primary function of the air intake system. While the air intake may contribute to controlling emissions, this is not its primary role. Increasing engine temperature and providing noise reduction are also not direct functions of the air intake system.