What Does An Air Filter Do in A Car?

Car engine air filter

Every small part of the car plays an extremely important auxiliary role. The engine takes in a large amount of air during its operation. 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 get into the gap between the piston and the cylinder, which will cause serious pulling phenomenon, which is especially serious in the dry and sandy working environment. The air filter is installed in front of the carburetor or the intake pipe to filter out dust and sand particles in the air to ensure sufficient and clean air enters the cylinder.

Air filter materials

Different grades require different filter element materials. The types of filters on the market are mainly divided into 3 types, and users need to choose the appropriate air filter according to their actual needs and the use environment.

1. The main materials used for the filter with coarse filtration effect are common materials, such as non-woven fabrics, metal wires, activated carbon, etc. The main material used in medium-efficiency filters is synthetic fiber felt, etc., and the pores will be smaller, such as 917805, 68052292aa.
2. The main material used for high-efficiency filtration products is ultra-fine glass fiber filter paper, with very small pores, which can allow air to pass through at a low filtration rate, thereby achieving the effect of filtering fine dust in the air and making the purification more thorough.

How to judge if the air filter needs to be replaced?

The question of how often you should change your cabin air filter depends on a variety of factors. It mainly depends on the environment in which the car is used. Your cabin air filter can last up to two to three years. However, in some cases, it can wear out and clog in as little as six months.

1. You can check the running status of the engine. If the air filter element is dirty, the air intake will be insufficient, and the fuel combustion will not be sufficient, resulting in unstable engine operation. When the accelerator pedal is continuously stepped on, the engine sounds dull, the acceleration response is slow, and the operation is weak. The exhaust is thick and black.
2. You can check the surface color of the air filter element. If the filter paper is still gray-black after cleaning the dust on the surface of the air filter element, it means that the filter paper can no longer be used and should be replaced immediately.

What happens if you don't replace car air filter?

1. As a result, the filtering effect is reduced, and the fine dust in the air enters the combustion chamber of the engine through the intake pipe for combustion, causing serious wear and tear on the engine cylinder;
2. Insufficient combustion of gasoline, increased carbon deposits in the throttle valve, due to increased carbon deposits inside the engine, resulting in unstable idling, black smoke from the exhaust pipe, and engine vibration;
3. Too many impurities are adsorbed on the surface of the air grid, which will easily cause blockage and cause insufficient air intake to the engine.