Which system is primarily responsible for mixing air with fuel in an engine?

The intake system is primarily responsible for mixing air with fuel in an engine. This system plays a crucial role in the overall functioning of the engine, as it draws in the air necessary for combustion and mixes it with fuel, typically provided by the fuel injection system or carburetor.

The air-fuel mixture is essential for efficient combustion, which powers the engine. This mixture is then directed into the combustion chamber where it is compressed and ignited, thus producing the energy needed to propel the vehicle.

In contrast, the exhaust system is responsible for expelling the combustion gases from the engine after the fuel has been burned, while the cooling system regulates the engine temperature to prevent overheating. The ignition system is responsible for initiating the combustion process by creating a spark that ignites the air-fuel mixture. Each of these systems has a distinct function, but it is the intake system that specifically facilitates the mixing of air and fuel.