Performance Research of Particulate Filter for CHINA VI Diesel Engine Based on Simulation
This article aims to improve the performance of the diesel particulate filter(DPF).The simulation model of DPF was es-tablished by AVL-Boost software,and its credibility was verified and analyzed by comparing simulation and test results.By ana-lyzing the influence of cell density,wall thickness,diameter and length on the pressure drop characteristics of the DPF,and based on the DPF capture mechanism,the effects of exhaust parameters and porosity on the DPF capture efficiency were analyzed.The results show that when the carbon load is constant,increasing cell density,reducing the wall thickness and the ratio of length and diameter will help reduce the DPF pressure drop;within a certain range,less particle diameter and exhaust flow can increase the DPF capture efficiency;among the structural parameters,the porosity has the greatest impact on the capture effi-ciency.Response surface analysis was applied to optimize the DPF structural parameters,the results show that when the cell den-sity is 400 cpsi,the wall thickness is 0.19mm,the length is 288.39mm,the diameter is 163.64mm,and the porosity is 0.28,the DPF comprehensive capture efficiency can be maintained at more than 98%.
Particulate FilterPressure Drop CharacteristicsCapture EfficiencyResponse Surface Analysis
万方数据
维普
