The automotive air filter (air cleaner) is a device that removes impurities such as dust and particles from the air through physical filtration. It is primarily used in automotive engines to ensure the engine inhales clean air, preventing dust and other impurities from entering the engine and causing component wear. The automotive air filter plays a crucial role in vehicle maintenance. Its basic structure includes a filter element and a housing, where the filter element is responsible for the filtration function, and the housing provides protection and support.
Types and Principles
Automotive air filters can be classified into different types based on their filtration principles, including:
 Paper-type air filter : Low cost, high filtration efficiency, and easy maintenance, widely used in automotive maintenance.
 Oil-bath air filter : Separates impurities through an oil-immersed filter element, suitable for agricultural machinery and marine power applications.
 Inertial air filter : Utilizes centrifugal inertial force to separate impurities.
 Filtration-type air filter : Filters impurities from the air using metal screens or filter paper.