The working principle of a truck air filter is mainly to provide clean air for the engine through iltration.
The air filter is usually composed of parts such as a housing and a filter element. When outside air enters the air filter, it first enters the inside of the filter housing through the air inlet. Then the air passes through the filter element. The filter lement is generally made of materials such as filter paper and non-woven fabric, which have fine pore tructures.
During the process of air passing through the filter element, impurity particles such as dust, sand grains, pollen, and soot in the air will be intercepted by the filter element and prevented from entering the engine. Only the filtered clean air can continue to flow to the engine's intake system and be mixed with fuel to perform work by burning inside the engine.