Product Size

Outer diameter 1: 323mm
Inner diameter 2: 27mm
Inner diameter 1: 237mm
Height 1: 567mm
Outer diameter 2: 323mm

The role of air filter

The engine has to suck in a lot of air during the working process

If the air is not filtered, the dust suspended in the air is sucked into the cylinder, which will accelerate the wear of the piston assembly and the cylinder. Larger particles entering between the piston and the cylinder will cause serious cylinder pulling, which is especially serious in a dry and sandy working environment. The air filter is installed in front of the carburetor or the air intake pipe to filter out dust and sand particles in the air and ensure that sufficient and clean air enters the cylinder. Among the thousands of parts and components of the engine, the air filter is a very inconspicuous component, because it is not directly related to the technical performance of the engine, but in actual use, the air filter is The service life has a great influence. On the one hand, if there is no filtering effect of the air filter, the engine will inhale a large amount of air containing dust and particles, resulting in serious wear and tear of the engine cylinder; on the other hand, if the air filter is not maintained for a long time during use, The filter element of the cleaner will be filled with dust in the air, which will not only reduce the filtering capacity, but also hinder the air circulation, resulting in excessively thick air mixture and abnormal operation of the engine. Therefore, regular maintenance of the air filter is essential.

Air filters generally have two types: paper and oil bath. In recent years, paper filters have been widely adopted due to their advantages of high filtration efficiency, light weight, low cost, and convenient maintenance. The filtration efficiency of the paper filter element is as high as over 99.5%, and the filtration efficiency of the oil bath filter is 95-96% under normal conditions. At present, the air filter widely used in cars is a paper filter, which is divided into two types: dry type and wet type. For the dry filter element, once it is immersed in oil or moisture, the filtration resistance will increase sharply. Therefore, avoid contact with moisture or oil when cleaning, otherwise it must be replaced with a new one.

When the engine is running, the air intake is intermittent, which causes the air in the air cleaner housing to vibrate. If the air pressure fluctuates too much, it will sometimes affect the engine’s air intake. In addition, the intake noise will also be increased at this time. In order to suppress the intake noise, the volume of the air cleaner housing can be increased, and some partitions are also arranged in it to reduce resonance.

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