1. The filtering efficiency of air filter

The most important task of dry air filters is to ensure adequate protection for the engine to avoid wear in dust condition that can be imagined. In other words , the type of wear shown by the engine equipped with the air filter is the same asthe operating modelin the fully dust-free particle suction condition. You need to pay more attention in the whole air filter designing work .

2.The life of air filter

For the dry-type air filter, in addition to the provisions of filtration efficiency, but also requires a high capacity of dust-accumulation .

The performance characteristics,it called the service lifein thefilter specific terms, which can be determined by the amount of dust inhaled in the range of filter given flow resistance. In order to ensure high dust storage capacity, air filter paper is folded into a corrugated shape to keep the surface profile have gap and to ensure that the dusty air flow unimpeded through the ripple, but also to prevent the corrugations fit together.