What is the primary purpose of an intake system?

• A. to supply the cylinders with a large volume of air for combustion and scavenging
• B. to cool the engine
• C. to filter oil
• D. to mix fuel with air

Answer: (A)

The intake system’s job is to deliver air to the engine so combustion can happen. It brings in outside air, filters it, and routes it through the throttle body and intake manifold into the cylinders. In engines that use scavenging, this airflow also helps push exhaust out and fill the cylinders with fresh air for the next cycle. So, the primary purpose is to supply the cylinders with a large volume of air for combustion and scavenging. The other options describe tasks handled by different subsystems (cooling, lubrication, or fuel mixing), not the main role of the intake path.