Abstract
This paper discusses the influence of partial region regeneration on both regeneration and emission performance by regeneration test bench. DPF substrate is divided into following four regions on the radial direction by the distribution of thermocouples. For the single region regeneration, region 2 has the highest maximum temperature, maximum temperature gradient, average diameter. The regeneration efficiency decreases when the loading area is far away from the center. The maximum total mass concentration is 0.36mg/m3 at region 4 due to the mass of carbon black loading. For double regions regeneration, the center and adjacent regions have positive effect on maximum temperature, maximum temperature gradient, regeneration efficiency and regeneration performance ration. The maximum total mass concentration and maximum average diameter are 0.2mg/m3 and 34nm at regions 14. For multiple regions regeneration, the lowest maximum temperature and the maximum temperature gradient are 565℃ and 8.3℃/m at regions 134, respectively. Regions 123 have maximum regeneration efficiency, performance ratio, total mass concentration and average diameter. The maximum and minimum average diameters are 101.8nm and 30.2nm at regions 123 and regions 134, respectively.