system in water is the main way of precipitation, there are diffusion cone, filter screen and other separation components inside the diesel precipitator.

More than three of China's emissions requirements, diesel engines using high-pressure common rail fuel system, in addition to the use of filter paper.Oil water separator has other functions, such as pre heating of the fuel to prevent the wax, filter impurities and so on.

Working principle of diesel oil filter

The working principle of the diesel oil filter is similar to that of the oil filter, and the difference is that there is no bypass valve and check valve for the diesel oil filter. 

Automotive diesel filter with oil and water separation function, the main role is to remove the water in the diesel oil, in order to reduce the fault of the nozzle, to extend the service life of the engine.

Main index of diesel oil filter standard

Spin on fuel filter filtration efficiency is more than 90%, it can filter out particles of more than 5um;

Water separation efficiency is more than 90% (for example, meiruier filter pl420 the separation efficiency is 93.3%);

Screw filter should be sealed test, under pressure 0.40MPa, time is not less than 1min, the sealing parts and sealing parts are not allowed to leak oil.

Meiruier filter paper main characteristics

1.     Air permeability（△P127Pa）:≥85L·m2·S

2.     Mean pore size：≤45um

3.     Bursting strength：≥300kPa