Oil filter cartridge AO1301/D13145 supplied by Huayu

Oil filter cartridge AO1301/D13145 supplied by HuayuUsed to filter out impurities in fuel, also known as oil-water separator and diesel fine filter, belonging to microporous paper filter element, etc. Fuel filters are all filter type filters. In the early days, gasoline filters had several types of filter elements, including metal plate gap type, metal mesh type, nylon cloth type, porous ceramic type, etc.

There are several types of filter elements for diesel filters, including cylindrical felt type, nylon cloth type, cotton yarn type, etc. These filter elements have good performance and long service life, but they generally have disadvantages such as low filtration efficiency, complex structure, high cost, and inconvenient maintenance, and have gradually been phased out.

Oil filter cartridge AO1301/D13145 supplied by HuayuFunction:

Most car engines are internal combustion engines, mainly using two types of fuel: gasoline and diesel. As fuel, there must be certain requirements for the quality and cleanliness of the fuel. Due to refining and processing reasons, the finished fuel contains a certain amount of impurities, moisture, and gum. The function of a fuel filter is to filter out these impurities in the fuel and supply clean fuel to the engine. If the fuel filter is poor, impurities in the gasoline can easily block the small holes in the carburetor, causing the carburetor to malfunction and the combustible mixture to become lean; The impurities in diesel entering the fuel injection pump can accelerate the wear of precision components and cause a decrease in pump oil pressure. If moisture and gum in the fuel enter the cylinder, it will cause poor combustion of the combustible mixture and reduce the power of the engine. Gasoline filters generally have only one stage and are installed between the gasoline tank and the gasoline pump or between the gasoline pump and the carburetor. Due to the presence of three precision components in the diesel engine supply system, there is a high requirement for the cleanliness of diesel, and the high content of gum in diesel. To improve filtration efficiency, diesel filters generally have two or even more stages, divided into diesel coarse and fine filters, also known as oil-water separators and diesel fine filters. They are installed between the diesel tank and the fuel transfer pump, as well as between the fuel transfer pump and the fuel injection pump. Some diesel engines also have sedimentation cups to settle water and impurities in the diesel.

Type:

Both gasoline and diesel filters commonly use microporous paper filter elements, which are treated with phenolic resin and made into foldable cylindrical filters. They have the advantages of good passing performance, high filtration efficiency, simple structure, low cost, and easy maintenance.

Filtering mechanism:

The filtration mechanism of filters can be divided into two types: interception filtration and adsorption filtration. When the filtration efficiency is not high, such as for particles over 30 microns, the basic particle diameter is larger than the pore size of the filter material, which belongs to typical interception filtration. However, for particles below 5 microns, the diameter is smaller than the pore size of the filter material, which belongs to adsorption filtration. Adsorption filtration is mainly used for high-performance diesel filters and is applied in diesel engines with electronic control common rail systems.