The car air filter is to filter out the air entering the combustion chamber of the engine without particles and impurities to ensure that the engine intake is clean. There is a lot of dust suspended in the air. The main component is silica, which is a harder substance than metal. Installing an air filter can reduce the wear of cylinders, pistons, piston rings and other parts.

The main function of automobile air filter is:
1. Filter impurities in gasoline to reduce engine loss. The air filter element, when the gasoline is burned, the clean gasoline and the clean air are mixed together, and when burned, the fuel can exert its maximum effect. In most places, the air quality is poor, and the air filter element is more important. The air filter element is what we often call the air filter;
2. If the air filter has not been replaced at the end of the maintenance period, it will become more difficult to inhale the engine. If the oil and gas are not mixed in place, carbon deposits will increase, thereby increasing fuel consumption;
3. The function of gasoline filter is self-evident, which is to filter out impurities in gasoline. Most of today's cars use electronic injection, the oil pressure is relatively high, and the filters are basically all wrapped up. If the gasoline filter element is dirty and the oil is not flowing smoothly, the fuel injection volume will drop and the power will be insufficient. However, if the vehicle wants to maintain power, the driver needs to increase the accelerator, the fuel injection volume increases, and the air intake volume increases. As a result, the ratio of fuel injection volume to air intake volume cannot reach an average state.