Analysis of Filter Classification and Core Functions: How the Vehicle's "Protective Mask" Works
Dec 30,2025
Automotive filters are mainly divided into four categories: air filters, oil filters, fuel filters, and cabin air filters, each responsible for filtering different systems. The air filter is located at the front end of the engine intake system, filtering dust and particles from the air to ensure clean air enters the cylinders and prevent engine wear. The oil filter is installed in the lubrication system to filter out metal debris, carbon deposits, and other impurities from the oil, maintaining oil cleanliness. The fuel filter removes water and gums from the fuel, protecting precision components such as fuel injectors. The cabin air filter effectively blocks pollutants like pollen and PM2.5, ensuring indoor air quality. All types of filters require regular replacement; otherwise, issues such as reduced engine performance, increased fuel consumption, or poor cabin air quality may arise.
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