Study on evolution process of soot particles in diesel engine exhaust pipe

被引：0
|
作者：
Wei M. [1 ]
Bian F. [1 ]
Ju H. [1 ]
机构：
[1] Hubei Key Laboratory of Advanced Technology for Automotive Components, Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan
来源：
Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2020年 / 48卷 / 02期
关键词：
Diesel engine; Exhaust pipe; Fractal dimension; Size distribution; Soot; Transmission electron microscope (TEM);
D O I：
10.13245/j.hust.200203
中图分类号：
学科分类号：
摘要：
Under different operating conditions of diesel engine, soot particles at different positions of exhaust pipes were collected.The morphology of soot particles was observed and photographed by transmission electron microscopy.Image-pro plus software was used to statistical analyze morphological characteristic parameter and the fractal dimension of soot particles was obtained by these parameters.The study comes to the following conclusions that the fractal dimension and size of soot particles gradually increase with the increase of the brake mean effective pressure (PBME), and its morphology develops from chain and branch to clusters and nets.Under the same PBME, the fractal dimension of the soot particles at the sampling point 2 is greater than that at the sampling point 1.It is indicated that the soot particles in the exhaust pipe are still changing through physical processes such as collision, polymerization and crushing, et al. © 2020, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.
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页码：11 / 15
页数：4
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