Diesel filter
The structure of the diesel filter is roughly the same as that of the oil filter, and there are two types: replaceable and spin-on. However, its working pressure and oil temperature resistance requirements are much lower than those of oil filters, while its filtration efficiency requirements are much higher than those of oil filters. The filter element of diesel filter mostly uses filter paper, and some also use felt or polymer material.
Diesel filters can be divided into diesel water separators and diesel fine filters. The important function of the oil-water separator is to separate the water in the diesel oil. The presence of water is extremely harmful to the diesel engine fuel supply system, and corrosion, wear, and jamming will even worsen the combustion process of diesel. Due to the high sulfur content in Chinese diesel, when combustion occurs, it will even react with water to form sulfuric acid that corrodes engine components. The traditional way of water removal is mainly sedimentation, through the funnel structure. Engines with emissions above the National III level have higher requirements for water separation, and high requirements require the use of high-performance filter media.