In addition to being rich in some beneficial gases such as oxygen and other beneficial gases needed by the human body, there are also some substances in the air that can cause harm to the human body. As the name suggests, the air filter is used to filter impurities in the air to provide clean gas to the engine. When the air filter is working, a large amount of impurities will be adsorbed on the surface, and a darker surface will be formed over time.

When the piston engine is working, if the inhaled air contains dust and other impurities, it will aggravate the wear of the parts, so it is necessary to install an air filter. The air cleaner consists of a filter element and a housing. The main requirements of air filters are high filtration efficiency, low flow resistance, and maintenance-free long-term continuous use. The engine sucks in a lot of air during operation. 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 group and the cylinder. Large particles entering between the piston and cylinder can cause severe cylinder pulling, especially in dry and sandy working environments. The air filter is installed in front of the carburetor or intake pipe to filter out the dust and sand particles in the air to ensure sufficient and clean air to enter the cylinder. The air filter is a very inconspicuous part among the tens of thousands of parts of thousands of cars, because it has no direct relationship with the technical performance of the car, but in the actual use of the car, the air filter has a great impact on the service life of the car. On the one hand, if there is no filtering function 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 performed 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 the air, resulting in too much mixture and abnormal engine operation. Therefore, it is very important to maintain the air filter on time.

Air filter replacement content introduction: replacement conditions For ordinary vehicles, it is more appropriate to replace the air filter every year or every 20,000 kilometers. The time or mileage that the vehicle has been driven is only a reference value. The factors that ultimately determine whether to replace the air filter are: Whether it has been unable to let enough air through. The air filter must ensure that the impurities in the air are filtered out while allowing enough air to enter the engine. The point here is that an air filter that has been in operation for a while is actually more efficient than a new one. This is because the impurities that the air filter has absorbed can help it capture more of the tiny dust. Eventually the air filter will still affect the operation of the engine due to the accumulation of too much dust. At this time, the vehicle will have a tendency to gradually deteriorate in fuel economy, power and emissions, until you change the air filter. Replacing the air filter depends on its basic condition. A dirty air filter does not mean that it is no longer working properly, so you should always pay attention to its operating state.