What is the function of a car's air filter?
2 Answers
The functions of a car's air filter are: 1. To ensure the air conditioning filter fits tightly against the housing, preventing unfiltered air from entering the cabin; 2. To separate dust, pollen, grinding particles, and other solid impurities from the air; 3. To prevent the car windows from fogging up, ensuring clear visibility for the driver and safe driving; 4. To maintain clean air in the passenger compartment and prevent bacterial growth. Generally, a car's air filter should be replaced once a year or every 15,000 kilometers. The replacement method is as follows: 1. Remove the damping rods on both sides of the glove box; 2. Take out the glove box to reveal a black rectangular panel, then pry it open and remove the clips; 3. Take out the old air filter; 4. Install the new air filter.
When I first started driving, I was also curious about what an air filter was. Later, during driving lessons, I learned that the main function of an air filter is to filter the air drawn into the engine, keeping dust, sand, and debris out to protect the delicate internal components of the engine. Imagine if dust went straight in—it would wear down the piston rings and cylinder walls, and over time, the engine would fail. After regularly changing the air filter in my car, I noticed the engine ran more smoothly and fuel consumption dropped significantly. Once, I got lazy and skipped replacing it, and the engine shook badly during acceleration while fuel consumption increased. The mechanic reminded me that a dirty air filter restricts airflow, leading to incomplete combustion, which not only wastes fuel but also affects performance. He suggested following the maintenance manual and checking or replacing it every 10,000 kilometers or so, especially on dusty roads. Don’t underestimate this part—proper maintenance can extend the engine’s lifespan and save you from major repairs.
