Diesel filters, filter harmful impurities in the engine combustion system to clean diesel for normal engine operation.

The function of diesel filters
The main function of a diesel filter is to filter out impurities in diesel and protect components such as the oil pump and nozzle in the fuel system. The oil pump nozzle is a precision component of the engine. Diesel fuel that has not been filtered through a filter can cause blockage in the oil pump and nozzle, reducing engine efficiency and increasing fuel consumption. Diesel filter with water filtration function. Water causes significant damage to the engine, leading to rusting, damage to the cylinder piston rings, and more seriously, cylinder pulling. Diesel filters, based on the different densities of water and fuel, use fluid flow control technology to separate water and achieve the effect of filtering water through the filter. Diesel filters, mainly obtained through sedimentation
In addition to water, there are separation components such as filters inside the filter. For diesel engines with emission requirements of Class III or above, most of them use high-pressure common rail fuel systems, and the filter elements are mostly made of filter paper.

Working principle of diesel filters
The working principle of diesel filters is similar to oil filters, but the difference is that diesel filters do not have bypass valves or check valves.

Main indicators of diesel filter standards:
Spin on fuel filter, the original filtration efficiency of the filter is ≥ 90%, and it can filter out particles of more than 5um; Filter water separation efficiency ≥ 90%;
The rotary filter should undergo a sealing test, and under the action of a pressure of 0.40MPa, the time should not be less than 1 minute. No oil leakage is allowed in all sealing and sealing parts.
Automotive diesel filter, with oil-water separation function, is mainly used to filter out water in diesel, reduce fuel injector failures, and extend the service life of the engine.