What is the primary function of an air filter in an engine?

The primary function of an air filter in an engine is to trap dirt and debris from entering the engine. This is crucial for maintaining engine health and efficiency. The air filter ensures that only clean air enters the combustion chamber, which helps to prevent contaminants from causing wear to engine components, clogging intake valves, and obstructing the air intake system. Clean air is essential for optimal combustion, which ultimately affects engine performance and longevity.

When air is drawn into the engine, it mixes with fuel to create a combustible mixture. If this air contains dirt and particles, it can lead to inefficient combustion, reduced power output, and increased emissions. By effectively filtering this air, the air filter plays a key role in ensuring that the engine operates smoothly and reliably. Proper maintenance of the air filter is important, as a dirty or clogged filter can restrict airflow, leading to a decrease in performance and efficiency.