1. The air filter element selected must match the power, economy and reliability of the original engine.
　　(1) the air chlorine flow in the technical parameters of the filter element with rated air intake should be greater than the rated air intake of the engine.
　　(2) filtration materials have requirements on thickness, tensile resistance, original intake resistance and filtration accuracy. Imported diesel requires air filtration accuracy of 5 micron, domestic diesel engines should also be less than 20 micron. The filtration accuracy of high efficiency filter paper is 2 microns, 30 microns for ordinary imported filter paper and 80 microns for domestic filter paper.
　　(3) filter element performance test:
　　(1) flow-resistance (pressure drop) test to determine air flow pressure loss (flow-resistance or flow-pressure adit curve).
　　(2) the original filtration efficiency test can calculate the dust collection efficiency of the filter element, and the dust removal rate of the normal filter element should be more than 99%.
　　(3) dust storage capacity test and cumulative efficiency test filter element dust accumulation too much cause blockage, air intake resistance increases. When the engine power decreases by 5% or fuel consumption increases by 5%, the intake resistance is a limit. When this value is reached, the filter element must be cleaned or replaced. During the test, the weight of ash accumulated when the intake resistance or pressure drop reaches 7 -- 46kPa is the dust storage capacity of the filter element, and the filtration efficiency during this test is the cumulative efficiency.
　　(4) original air intake resistance test air intake resistance 9 rated air flow through the filter element at the inlet and outlet pressure difference) should not exceed 3.2kPa, but also the power will decline, the engine will smoke.
　　This article is organized by dongguan oneness filtration technology co., LTD