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The function of the air filter is to provide clean air for the internal combustion engine to prevent the internal combustion engine from inhaling air with impurity particles during operation, which increases the chance of abrasion and damage.

The role of the air filter

The main components of the air filter are the filter element and the casing, of which the filter element is the main filtering part, which is responsible for the

The filtration of the gas works, and the casing is the external structure that provides the necessary protection for the filter element. The working requirements of the air filter are to be able to undertake high-efficiency air filtration work, without adding too much resistance to the air flow, and to work continuously for a long time.

The engine needs to suck in a lot of air during the working process. If the air is not filtered, the dust suspended in the air will be sucked into the cylinder, which will accelerate the wear of the piston group and the cylinder. Larger particles entering between the piston and the cylinder will cause a serious "cylinder pulling" phenomenon, which is especially serious in a dry and sandy working environment.

The air filter is installed in front of the carburetor or the intake pipe, and plays the role of filtering out dust and sand in the air, so as to ensure that sufficient and clean air enters the cylinder.

Maintenance of the air filter

Among the thousands of parts of the car, the air filter is a very inconspicuous part, because it is not directly related to the technical performance of the car, but in the actual use of the car, the air filter is very important to the car. The service life (especially of the engine) has a huge impact.

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 of the engine cylinder;

On the other hand, if maintenance is not given for a long time during use, the filter element of the air filter will be covered with dust in the air, which will not only reduce the filtering capacity, but also hinder the circulation of air, resulting in mixed air Too rich and the engine does not work properly. Therefore, regular maintenance of the air filter is crucial.

Classification of air filters

There are generally two types of air filters: paper and oil bath. Due to the high filtration efficiency and light weight of the paper filter

The advantages of low cost and convenient maintenance have been widely used. The filtration efficiency of the paper filter element is as high as 99.5% or more, and the filtration efficiency of the oil bath filter is 95-96% under normal conditions. The air filter widely used in the car is a paper filter, which is divided into two types: dry type and wet type. For dry filter elements, once immersed in oil or water, the filtration resistance will increase sharply, so avoid contact with water or oil when cleaning, otherwise new parts must be replaced.

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

We have Volvo Hydraulic D13 Crankcase Truck 21715813 Air Filter for sale, for more information, we are glad to serve you.