High quality excavator cotton picker diesel filter 129907-55801

Fuel filter classification

1. Diesel filter

The structure of the diesel filter is roughly the same as that of the oil filter, and there are two types: replaceable and spin-on. However, its working pressure and oil temperature resistance requirements are much lower than those of oil filters, while its filtration efficiency requirements are much higher than those of oil filters. The filter element of diesel filter mostly uses filter paper, and some also use felt or polymer material.

Diesel filters can be divided into two types:
(1), diesel water separator
The important function of the diesel water separator is to separate the water in the diesel oil. The presence of water is extremely harmful to the diesel engine fuel supply system, and corrosion, wear, and jamming will even worsen the combustion process of diesel. Engines with emissions above the National III level have higher requirements for water separation, and high requirements require the use of high-performance filter media.

(2), diesel fine filter
The diesel fine filter is used to filter the fine particles in the diesel oil. The diesel engine with emissions above the national three is mainly aimed at the filtration efficiency of 3-5 micron particles.
2. Gasoline filter
Gasoline filters are divided into carburetor type and EFI type. For gasoline engines using carburetors, the gasoline filter is located on the inlet side of the fuel pump, and the working pressure is low. Generally, nylon shells are used. The gasoline filter is located on the outlet side of the fuel transfer pump and has a high working pressure, usually with a metal casing. The filter element of the gasoline filter mostly uses filter paper, and some also use nylon cloth and polymer materials.

Because the combustion method of the gasoline engine is different from that of the diesel engine, the overall requirements are not as harsh as the diesel filter, so the price is cheap.
3. Natural gas filter
Natural gas filters are widely used in metallurgy, chemical industry, petroleum, papermaking, medicine, food, mining, electric power, urban, household and other gas fields. The gas filter is an indispensable device on the pipeline for conveying the medium. It is usually installed at the inlet end of the pressure reducing valve, pressure relief valve, positioning valve or other equipment to eliminate impurities in the medium and protect the normal operation of the valve and equipment. Use, reduce equipment maintenance costs.

fuel filter action
The function of the fuel filter is to remove the iron oxide, dust and other solid impurities contained in the fuel to prevent the fuel system from being blocked (especially the fuel injector). Reduce mechanical wear, ensure stable engine operation and improve reliability.

Why change the fuel filter
As we all know, gasoline is refined from crude oil through a complex process, and then transported to various refueling stations through special routes, and finally delivered to the owner’s fuel tank. In this process, impurities in gasoline will inevitably enter the fuel tank, and in addition, with the extension of use time, the impurities will also increase. In this way, the filter used to filter the fuel will be dirty and full of dregs. If this goes on, the filtering effect will be greatly reduced.

Therefore, it is recommended to replace it when the number of kilometers is reached. If it is not replaced, or it is delayed, it will definitely affect the performance of the car, resulting in poor oil flow, lack of refueling, etc., and finally lead to chronic damage to the engine, or even overhaul of the engine.

How often to change the fuel filter
The replacement cycle of automobile fuel filters is generally about 10,000 kilometers. For the best replacement time, please refer to the instructions in the vehicle manual. Usually, the replacement of the fuel filter is carried out during the major maintenance of the car, and it is replaced at the same time as the air filter and the oil filter, which is what we call “three filters” every day.

Regular replacement of the “three filters” is a key way to maintain the engine, which is of great significance to reduce engine wear and ensure its service life.

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