GB/T 28949-2012 focuses on the performance test of intake air filters for internal combustion engines and air compressors. The standard clearly specifies the test method, covering the test process of key performance indicators such as filter filtration efficiency, pressure drop, dust holding capacity, etc., detailing the requirements and operating specifications of the test equipment. Through the unified and standardized performance test, the mass and applicability of the intake air filter can be accurately evaluated, providing a scientific basis for the selection of suitable filters for internal combustion engines and air compressors, ensuring the stable operation of the equipment, prolonging the service life and reducing the failure caused by intake air pollution.