柴油机DPF再生技术的研究进展

李奕闻¹，范宪涛²，杨培兴²，白书战^1*

1.山东大学能源与动力工程学院，山东 济南  250061；2.山东宇洋汽车尾气净化装置公司，山东 聊城  252100

摘要：为提高柴油机颗粒捕集器（diesel particulate filter，DPF）的工作性能，实现DPF安全再生，分析颗粒沉积机理和DPF入口流速、粒径、灰分沉积量、过滤体结构等参数对DPF内颗粒沉积分布特性的影响，归纳DPF积碳量的估算方法及DPF再生性能的影响因素。通过对DPF降怠速再生温度场的研究可知，DPF安全再生积碳量上限为11 g/L；未来研究中应考虑随机振动对颗粒沉积及再生过程的影响。该研究可为优化DPF的结构与再生性能提供参考。

关键词：DPF；颗粒沉积；积碳量；再生技术

Research progress in DPF regeneration technology for diesel engines

LI Yiwen¹, FAN Xiantao², YANG Peixing², BAI Shuzhan^1*

1.School of Energy and Power Engineering, Shandong University, Jinan 250061，China;

2.Shandong YYO Emission Control System Co., Ltd., Liaocheng 252100，China

Abstract：In order to improve the performance of diesel particulate filter (DPF) and achieve safety regeneration of DPF, the particle deposition mechanism and the influence of DPF inlet flow rate, particle size, ash deposition amount, filter structure, etc. on the distribution characteristics of particle deposition in DPF are analyzed. The estimation method of carbon deposition in DPF and the influencing factors of DPF regeneration performance are summarized. Through the study of the temperature field of DPF idle regeneration, the upper limit of carbon accumulation in DPF safe regeneration is 11 g/L. In future research, the impact of random vibration on particle deposition and regeneration processes should be considered. This study can provide reference for optimizing the structure and regeneration performance of DPF.

Keywords:DPF; particle deposition; carbon accumulation; regeneration technology