在汽車的千千萬萬個零部件中，空氣濾清器是一個極不起眼的部件，因為它不直接關系到汽車的技朮性能，但在汽車的實際使用中，空氣濾清器卻對汽車（特別是發動機）的使用壽命有極大的影響。一方面，如果沒有空氣濾清器的過濾作用，發動機就會吸入大量含有塵埃、顆粒的空氣，導致發動機氣缸磨損嚴重﹔另一方面，如果在使用過程中，長時間不給維護保養，空氣濾清器的濾芯就會粘滿空氣中的灰塵，這不但使過濾能力下降，而且還會妨礙空氣的流通，導致混合氣過濃而使發動機工作不正常。因此，按期維護保養空氣濾清器是至關重要的。
In the thousands on thousands of parts of automobile, air filter is a very inconspicuous part, because it is not directly related to the vehicle technical performance, but in the actual use of the automobile, air filter is on the car (especially the service life of the engine) has a great influence. On the one hand, if there is no air filter filtration, the engine will inhalation of dust containing air, particles, resulting in engine cylinder wear serious; on the other hand, if the use of process, long time not to maintenance, air filter element will be Zhanman dust in the air, which not only makes the filtering ability drops, but it will also hinder the circulation of air, causing the mixture too thick and makes the engine not working properly. Therefore, regular maintenance of the air cleaner is crucial.
空氣濾清器一般有紙質和油浴式兩種。近年來，由于紙質濾清器具有濾清效率高、質量輕、成本低、維護方便等優點，已被廣泛采用。紙質濾芯的濾清效率高達９９．５％以上，油浴式濾清器的濾清效率在正常的情況下濾清效率為９５－９６％。目前轎車上廣泛使用的空氣濾清器是紙質濾清器，又分為干式和濕式兩種。對干式濾芯來說，一旦浸入油液或水分，濾清阻力就會急劇增大，因此清潔時切忌接觸水分或油液，否則必須更換新件。
Air filters are generally with paper and oil bath type two. In recent years, due to the paper filter has high filtering efficiency, light weight, low cost, convenient maintenance and other advantages, has been widely used. Paper filter filtration efficiency can reach above 99.5%, the oil bath type filter efficiency in the case of normal filtration efficiency is 95 - 96%. Air filter widely used cars is a paper filter, and is divided into dry and wet two. The dry filter core, once immersed in oil or water, filtration resistance will increase sharply, so avoid contact with clean water or oil, or the new parts must be replaced.
清潔干式空氣濾清器時，應將濾芯拿到室外，用壓縮空氣從濾芯內側向外吹氣，同時轉動濾芯，并使吹管沿濾紙折痕方向移動，徹底吹掉濾芯中積存的灰塵。吹洗時，注意不要使吹管離濾紙太近，以免吹破濾紙﹔也不要用敲打濾芯的辦法來清除灰塵，這樣會使濾芯損壞或變形。濾芯外部的污物可以用干抹布擦去，濾清器殼體表面及密封安裝平面上的塵土，用干淨的濕抹布即可擦拭干淨。
Clean dry air filter, filter should be outdoors, use compressed air to blow air outwards from the filter inside, at the same time rotating filter, and the torch moving along the crease direction completely blown dust filter paper, filter in the accumulation of. Wash, pay attention not to make the torch too close to avoid blowing broken filter paper; filter paper, also do not use tap filter to remove dust, which will make the element damage or deformation. Filter external dirt may use a dry cloth wipe cleaner shell surface and seal installation plane of the dust, wipe clean with a wet cloth to clean.
清洗油浴式空氣濾清器時，先倒掉貯油盤內的污油積垢，用汽油清潔貯油盤、濾芯、外殼和空氣濾清器蓋后，在殼體與蓋的內表面涂上一層清潔的機油。濾芯應用干淨的機油浸潤后，再裝入殼體中，并按規定的高度在貯油盤中加入干淨機油。
Cleaning the oil bath air filter, the first dirty oil fouling drained storage tray, use of clean gasoline oil storage, filter, a shell and the air filter cover, the casing and the inner surface cover is coated with a layer of clean oil. Application of clean oil filter after the invasion, and then into the shell, and join the clean oil in storage in the oil pan in the prescribed height.