What is the function of an air filter?

The function of the air filter is to filter out tiny impurities in the air, preventing them from entering the engine combustion chamber and affecting engine operation. An air filter is a type of filter, also known as an air filter cartridge, air cleaner, or air filter, mainly used for air filtration in engineering vehicles, automobiles, agricultural vehicles, laboratories, sterile operating rooms, and various precision operating rooms. Symptoms of a dirty car air filter include: 1. Using an excessively dirty air filter while driving can cause insufficient air intake for the engine, resulting in incomplete fuel combustion; 2. This can lead to unstable engine operation, reduced power, and increased fuel consumption. Therefore, it is crucial to maintain the cleanliness of the car's air filter; 3. A dirty air filter can cause insufficient oxygen, leading to incomplete combustion, resulting in black smoke and a large amount of accumulated black engine oil inside the cylinder, causing loss of lubrication.