The PURE air filter is the "mask" of the engine. It intercepts dust, sand, pollen and other impurities (particle size ≥ 5 microns) in the air through multi-layer pleated filter paper, allowing only clean air to enter the combustion chamber. Its filtration principle is based on physical interception and inertial collision. The microporous structure of the filter material can absorb more than 99% of particulate matter, preventing pollutants from causing cylinder wear or carbon deposition. During normal operation, it can balance the intake air flow and filtration efficiency, ensure full combustion of fuel, and maintain stable engine power output.