The function of a car air filter

The function of a car air filter is of vital importance. It is one of the key components of the engine's intake system and is mainly responsible for purifying the air entering the engine to prevent harmful impurities in the air from causing damage to the engine.

The main uses of automotive air filters
filter impurities in the intake air
Including: dust, sand grains, pollen, insects, and tiny particles

If these impurities enter the engine combustion chamber, they may cause:

The cylinder wall and piston rings are worn

The valve seal is not tight

Lubricating oil contamination leads to performance degradation

protects the internal parts of the engine
The high-precision components inside the engine, such as cylinders, pistons and valves, must operate in a clean environment.

Air filters can significantly reduce mechanical wear caused by impurities and extend the engine's lifespan.

enhance combustion efficiency and performance
The engine requires clean air mixed with fuel in a certain proportion to burn efficiently.

Impurities in the air can affect combustion efficiency, causing:

Decline in power

Increased fuel consumption

The idle speed is unstable

reduce exhaust pollution
The filter keeps the air entering the engine pure, which is conducive to complete combustion and thereby reduces:

Carbon monoxide (CO

Hydrocarbons (HC

Emissions of harmful gases such as nitrogen oxides (NOx)

It helps vehicles meet environmental protection emission standards (such as National VI, European VI, etc.)

protect other system components
High-efficiency air filtration can also protect:

Turbocharger (preventing sand and dust from entering)

Throttle and intake manifold (to prevent carbon deposits)

Air flow meter sensor (reducing error)

summary: a one-sentence summary of the purpose
The function of a car air filter is to filter the intake air, protect the engine, improve combustion efficiency, extend service life, and reduce pollution emissions.