Automobile air filter knowledge and inspection and replacement steps

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　　carofair filterIt is equivalent to the human nose, and it is the first "checkpoint" for air to enter the engine. Its function is to filter out sand and some suspended particles in the air, so that the air entering the engine is relatively pure, so that the engine can work. normal.

From winter to spring, generally speaking, the air in spring will contain relatively more dust and sand.FilterClogging is easy to occur. At this time, the engine will have symptoms such as difficulty in starting, weak acceleration, and unstable idling. At this time, it is very necessary to clean the air filter. The normal operation of the air filter can avoid premature wear (abnormal) of the engine and maintain the best working condition.

The atmosphere contains three basic particulate pollutants with different densities, namely dust, residue and carbon particles. On open highways, the dust content is lower than in rural and built-up areas. In areas with high dust concentration, such as construction sites and wind-sand areas, the frequency of inspection and replacement of air filters is higher.

In expressways and traffic congested areas, because of the concentration of car emissions, the content of carbon particles in the air is significantly higher. For the inspection of the filter, you should carefully check the deep inside of the folds. You can often blow the filter element with high-pressure wind. Sometimes, the outside of the filter looks clean, but the inside is already very dirty and must be replaced immediately.

Air filter inspection and replacement cycle

It is not an exaggeration that the air filter can perform preventive maintenance on the engine. Before the intake air is mixed with fuel, the function of the air filter is to filter out dust, carbon particles, part of the water vapor and other impurities in the air to ensure that clean air enters the cylinder.

Theoretically, when every unit volume of fuel is burned, about 10,000 unit volumes of clean air are needed. In general, automakers recommend a replacement period of 48,000 km for normal maintenance of air filters, and routine inspections are performed every 24,000 km; the recommended replacement period for conservative maintenance is 24,000 km. Generally, the air filter of a car needs to be changed once every 20000km, and the air filter must be changed every 25000km. Generally, check once at 10,000km, and it is best to check once at 2,000km in spring.