The results show that the EGR composition CO?2 and N?2 addition suppress the soot formation in the soot inception process and soot growth of the diffusion flames. No obvious adverse effect of these two species on soot oxidation has been observed. ??

• 结果显示,废气再循环成分CO2和N2对扩散火焰碳烟生成的各个过程并无增加碳烟排放量的作用,反而遏止碳烟的成核和聚合长大,这两种成分对碳烟的氧化,也没有十分明显的不利影响。