Diesel fine filter definition
The diesel fine filter is a diesel fine filter designed for two-stage filtration of diesel engines. It is combined with a diesel oil-water separator to form a two-stage filtration. The oil water separator is used to filter the water in the diesel oil, and the diesel fine filter is the fine particles in the diesel oil.
The diesel fine filter is the main filter in the two-stage filtration, and it is also the last line of defense for impurity filtration. It has high requirements for filtration efficiency and service life. At present, for the diesel heavy truck of the national standard, the filtration efficiency of particles of 3-5 micrometers is as high as 98.6%, the filtration efficiency of particles of 5-10 micrometers or more is 99.8%, and the filtration efficiency of particles above 10 micrometers is required by 99.9%. While ensuring high filtration efficiency, it also needs to meet small flow resistance to ensure reliable operation of the engine and sufficient power.