There are two kinds of air filter elements: one is dry and made of paper or organic materials. The other is wet, which is made of net wire.
Dry working principle: air enters the wind guide blades of the filter, which makes the air rotate at high speed to produce centrifugal force, and throws large and heavy impurities in the air to the filter shell, and falls out from below or exists in the filter. Small impurities in the air are filtered by the paper filter element and blocked outside the filter element. Clean air is sucked and utilized by the engine.
Wet working principle: the lower part of the wet filter is equipped with engine oil, and the filter screen is also stuck with engine oil. Air enters the wind guide blades in the filter, which makes the air rotate at high speed, producing centrifugal force and downward impulse. Air rushes into the engine oil, and most of the impurities in the air are stuck by the engine oil, and the remaining impurities are stuck by the netted filter element with stuck oil. Clean air is sucked and utilized by the engine.
Both filter elements should be cleaned and replaced regularly. Can't be blocked by impurities in the air. If there is congestion, the more serious the congestion, the more the engine power drops, the higher the fuel consumption, the higher the water temperature and the greater the wear.