What is the function of a car air filter?
2 Answers
The function of a car air filter is to filter out dust and impurities from the air. After installation, it prevents dust and impurities from entering the cylinder, thereby extending the engine's service life. Without an air filter, dust in the air would directly enter the cylinder, increasing wear on the engine valves, cylinder liners, and piston rings, and shortening the engine's lifespan. Not installing an air filter may improve engine air intake slightly, resulting in a short-term increase in power. When cleaning, avoid using water or oil; instead, use the tapping method or the blowing method. The tapping method involves gently tapping the end face of the filter element to dislodge dust, while the blowing method uses compressed air to blow clean from the inside out. However, the number of cleanings is limited, as over time the air filter's ability to filter air will decline.
The air filter acts as a cleaner in my car, filtering out impurities like dust, sand, and pollen from the air, allowing only clean air to enter the engine's combustion chamber. This directly improves fuel efficiency and horsepower. I've experienced the consequences of not replacing it on time – sluggish acceleration and a spike in fuel consumption. Later, I learned that a dirty filter restricts airflow, forcing the engine to work harder. Checking and replacing it regularly is simple. I make it a habit to pop the hood every 10,000 kilometers for a look, and if it's blackened or dirty, I replace it immediately. On dusty rural roads, I'm even more diligent to prevent particle wear on pistons and cylinders, extending the engine's life. Spending a few dozen bucks on this is far cheaper than engine repairs, reduces strange noises, and makes driving smoother. In short, this is basic maintenance – don't slack off.
