Air filter related to the engine power , economy , intake noise , diesel smoke . According to statistics, motor vehicles and construction machinery engine early wear , about 70% of the air cleaner , air cleaner filter efficiency and lifetime of wear and tear on the engine plays a decisive role .
    Particles suspended in the air as dust , in size range of approximately 1-1000 ¦Ìm, if the wind is low , the size is larger than 200 ¦Ìm and less than 1¦Ìm particles of dust , wear little effect on the engine because of the dust particles larger than 200¦Ìm promoter in floating in the air is not easy , rapid sedimentation . Greater than 200 ¦Ìm and smaller than 1¦Ìm of dust particles on the wear of the engine is small. Note If greater than 200 ¦Ìm particle friction difficult to enter and less than 1¦Ìm dust particles but also in the friction within the film . Auto air filter processing is intended primarily for air 1-200¦Ìm particles. From the perspective of filtered air filter , the dust particles are divided into three : (A) Class ,1-5 ¦Ìm, (B) ,5-30 ¦Ìm, (C) Class ,30-200 ¦Ìm, (A) Class particle too small , general inertia oil bath or swirl tube difficult to filter , (B) with a high efficiency particle air filter class is easy to filter. Type (C) particles , generally strainers can be separated out . Air dust composition, particle distribution , physical and chemical properties, dust concentration , geography, climate and other factors vary, depending on the situation in China , the three northern regions vast territory, large sand dust , wind strong season spanning long periods , air dust concentration 0.001-1.0g / m3, the main component of air dust hard abrasive , followed by organic and calcium, aluminum , iron , and other oxides.
    Calculation showed that: when the air filter is not installed , the amount of dust 2.5g / m3 state, the engine speed 1800r/min , the tank engine the dust sucked into the cylinder up to 4kg / h, resulting in engine wear quickly , test results shows a tank with diesel engines in the dust content of 3g / m3 dirt road just driving 15-20h, the engine will be damaged due to wear .
     Therefore, in order to improve the degree of purification of the engine intake air , reducing mechanical wear and extend the life of the engine , must be installed in the engine intake air filter reliable and effective .

Keyword:The role of automotive engine|xtskygroup

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