What component removes dust particles from the air that would cause abrasion or harm to the engine?

• A. Air Cleaner
• B. Air Silencer
• C. Aftercooler
• D. Intercooler

Answer: (A)

The main idea here is protecting the engine from abrasive wear by cleaning the incoming air. Dust and debris drawn into the engine can scratch cylinder walls, piston rings, and bearings, reducing performance and lifespan. The air cleaner does exactly that: it filters out particles from the intake air so only clean air enters the combustion chamber, helping prevent abrasion and damage.

The other components don’t serve this purpose. An air silencer lowers intake noise but doesn’t remove dust. Aftercoolers and intercoolers are used to cool compressed air in turbocharged or supercharged systems, not to filter particulates.