LAUSR

A new kind diesel particulate filter (DPF) with gear-shaped wood fiber filter element is researched and it has very low cost and less requirement for fuel quality. In this paper, the mathematical models of the filtration resistance and the structural parameters of the wood fiber filter element were established first. Then by SEM, the advantages of this material can be proved. Finally, to verify reliability and efficiency of the filter elements with different structure parameters, the filtration resistance change were compared and analyzed through a DPF bench test based on meeting the demand of filtration efficiency that is above 85%. The test results showed that the filtration efficiency is more than 85% and the filtration resistance is below 3 kPa. Meanwhile, the life span of this new kind wood fiber filter is more than 90 h and the cost of it is very low.