The air filter is the last checkpoint of the engine, and it is the key to protect the engine from damage, so riders must pay attention to the maintenance of the air filter. Today, let us take a closer look at the air filter!

Components of air filtration


The main components of the air filter are the filter element and the housing. The filter element is the main filtering part and is responsible for the filtration of the gas. The housing is the external structure that provides the necessary protection for the filter element.


Working requirements of air filter


The work requirement of air filter is to be able to undertake high-efficiency air filtration work, not to add too much resistance to air flow, and to work continuously for a long time.


Type of air filter


1. Inertial air filter: It is based on the centrifugal force as its working principle. It will quickly agitate the air during work. In this way, the density of impurities in the air is higher than that of air, so when the impurities rotate or turn with the air , The inertial effect of centrifugal force will separate the impurities from the air naturally to achieve the purpose of filtration.


2. Filter-type air filter: It uses filter media as the main filtering method. When the air passes through the filter-type air filter, the metal filter screen or filter paper will block the impurities in the air and stick them to the filter element. , So as to achieve the effect of air filtration.


3. Oil-bath air filter: It uses inertial force to make part of the dust adhere to the oil by the dust-laden air to the oil sump. At the same time, the dust-laden air with oil mist is further filtered when it passes through the filter element. The dust oil adhered by the filter element will return to the air filter of the oil pool with the oil drop.


Editor's knowledge zone: Heavy truck vehicles usually adopt the above-mentioned combination method for filtering due to the large intake air flow and poor working conditions, that is, the inertial filter is initially filtered and then passed through the oil bath and dry filtration. The filter performs secondary filtration. But no matter what type of air filter, its most important role is to filter impurities in the air, provide clean air for the work of the engine, reduce the wear and tear of engine parts, so as to protect the engine and extend its service life. The role of.


Replacement of air filter


1. Turn off and stop: Make sure that the vehicle is turned off and cooled down, then open the engine compartment cover and find the location of the air filter. The air filter is generally located on the right side of the engine compartment, you can check the location mark on the vehicle user manual.


2. Take out the filter element: Open the cover lock of the air cleaner, remove the nut that fixes the cover, pull open the baffle, and take out the filter element. When removing the filter element, take care to prevent impurities from falling into the carburetor.　


3. Clean the filter element: Check whether there is a lot of dust in the filter element. If there is, you can gently tap the end surface of the filter element. You can also use compressed air to blow away the dust on the filter element from the inside to the outside. If there is no compressed air, you can tap the filter element with a screwdriver handle, and then use a brush to clean the external dirt. Do not use gasoline or water for washing.