Abstract：The oxidation model by hydroxyl group was embedded into KIVA-3V to investigate the emission of DI diesel engine and to verify the model. The effects of EGR ratios of 5%, 10%, 15%, 20% and 25% on soot emission were discussed. The results show that the calculated soot emission is good consistent with measured result. The improved oxidation model can predict soot emission well. When the EGR ratio increases, soot emission increases slightly at low load, and increases much at middle or heavy load, especially increases much more for high EGR ratio. With the increasing of EGR ratio, soot oxidation mass decreases more than soot production mass with wide distribution of high soot mass concentration. The inhibition effect of EGR on hydroxyl group is obvious at the middle stage of combustion. When the load increases, the concentration of hydroxyl group decreases markedly with the increasing of EGR ratio.
引用本文:
王向丽1, 王忠1, 倪培永1, 袁银男2, 毛功平1. EGR柴油机的碳烟排放预测[J]. 江苏大学学报（自然科学版）, 2012, 33(3): 264-268.
Wang Xianli1, Wang Zhong1, Ni Peiyong1, Yuan Yinnan2, Mao Gongping1. Soot emission prediction of diesel engine with EGR[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2012, 33(3): 264-268.
2012, Vol. 33 
