The engine, by moving the piston up and down in the cylinder, sucks in air and forms a combustible mixture with fuel, which burns in the cylinder, producing high-temperature and high-pressure gas to push the piston, which then drives the crankshaft to rotate and output power. The piston moves up and down in the cylinder, and it fits very tightly with the cylinder wall. If there are dust particles in the inhaled air, it is easy to cause wear on the piston and cylinder wall, leading to air leakage, insufficient cylinder pressure, and reduced power.

An air filter is used to prevent dust from being sucked into the cylinder. If the air filter is not unobstructed, it can lead to insufficient engine intake, resulting in insufficient fuel combustion, decreased power, and increased fuel consumption. If the air filter is used for a long time, it is easy to produce carbon deposits in the engine combustion chamber, leading to engine failure.
Technical specifications of air filters
High quality air filters generally have high filtration performance, low air resistance, long service life, and high durability.

Working principle of air filter
At present, the air filters used in vehicles are made of paper, which are lightweight, easy to install, and have high filtration efficiency. A paper filter mainly consists of a filter end cover iron mesh and filter paper. Air enters the surface of the filter element at high speed, and impurities such as dust are adhered to the outer surface of the paper grid. The air passing through the filter paper becomes clean and participates in combustion towards the cylinder through the intake branch pipe.

Air filter replacement cycle
Every time the oil is changed, it is necessary to check the air filter for obvious dirt and dirt. The air filter is usually cleaned every 5000 kilometers and needs to be replaced with a new one every 10000 kilometers. For areas with poor driving conditions, the cleaning and replacement cycle of the filter needs to be correspondingly shortened.
When replacing the air filter, using genuine factory products can ensure a longer service life of the vehicle. In addition, for vehicles equipped with carburetors, pollution from the air filter will lead to a decrease in the atomization effect of the carburetor, an increase in fuel consumption, and a decrease in driving reliability.