Classification of fuel filter
The fuel filter has three kinds of diesel filter, gasoline filter and natural gas filter. Its function is to remove harmful particles and moisture in engine fuel gas system, so as to protect oil pump, nozzle, cylinder liner, piston ring and so on, reduce wear and avoid blockage.
The structure of the diesel filter is roughly the same as that of the oil filter, and there are two kinds of commutative and rotating type. But the working pressure and oil temperature resistance are much lower than the oil filter, and the filter efficiency is much higher than that of the oil filter. The filter core of the diesel filter is mostly filter paper, and it also uses felt or polymer material. In addition to filtering the mechanical impurities in diesel oil, a diesel filter has an important function to filter water. The existence of water is very harmful to the diesel fuel supply system, and corrosion, wear, death and even worsening the combustion process of diesel oil. A diesel oil filter system in water is the main way of precipitation. Or a settling chamber in the lower part of the filter, or a special precipitator. No matter the sedimentation chamber in the lower part of the filter or the special precipitator, the water release valve is set up, and when the water is accumulated to a certain amount, the valve is opened and the water is released.
A carburetor type gasoline filter and EFI type, use the carburetor gasoline engine, gasoline filter in the inlet side of the pump, the working pressure is smaller, generally use the nylon shell, the outlet side of gasoline filter in EFI engine oil pump, high working pressure, usually made of metal. The filter core of the gasoline filter is mostly filter paper, and it also uses nylon cloth and polymer material.
The function of the fuel filter is to remove the solid impurities, such as iron oxide and dust in the fuel, to prevent the blockage of the fuel system (especially the nozzle). Reduce mechanical wear and tear, ensure the stable operation of the engine and improve the reliability.
The working principle of the fuel filter
There are all kinds of impurities in the general gasoline, and the oil tank will precipitate a certain amount of dirt for a long time, and the above reasons will affect the quality of gasoline. The effect of gasoline grid is to filter the above impurities. The gasoline in the fuel tank is filtered through the gasoline tank to reach the combustion chamber of the engine, and its cleaning purity can be effectively guaranteed.