Micro-structural and components evolution mechanism of particular matter from diesel engines with non-thermal plasma technology

被引：47
作者：
Wang, Pan [1 ]
Gu, Wenye [1 ]
Lei, Lili [1 ]
Cai, Yixi [1 ]
Li, Zhijun [2 ]
机构：
[1] Jiangsu Univ, Sch Automot & Traff Engn, Zhenjiang 212013, Peoples R China
[2] Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China
来源：
APPLIED THERMAL ENGINEERING | 2015年 / 91卷
基金：
中国国家自然科学基金;
关键词：
Non-thermal plasma; Diesel engine; PM; Physico-chemical properties; Combustion temperature; CHEMICAL-COMPOSITION; FUEL SULFUR; EXHAUST; EMISSIONS; INJECTION; BIODIESEL; SOOT; PARTICLES; PM; SIZE;
D O I：
10.1016/j.applthermaleng.2015.08.010
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The present study is about the influence of non-thermal plasma (NTP) technology on soot emissions and physico-chemical properties (morphology, particle size, chemical composition and ignition temperature) of diesel PM. Experiments have been carried out using a small direct injection diesel engine with NTP technology based on a bench test. The physico-chemical properties of PM samples were detected by GC-MS, SEM, EDX, and TGA. PM samples after NTP treatment consisted of mainly hydrocarbons with less than 18 carbon atoms and few hydrocarbons with higher than 20 carbon atoms. Analysis by SEM and EDX showed that the agglomeration degree and the mean spherule diameters were markedly reduced by NTP oxidation. TGA showed that the ending combustion temperatures of PM samples in oxygen environment were 670.03 degrees C and 550.54 degrees C before and after NTP treatment, respectively. The mean temperature difference was nearly 120 degrees C, which indicated that NTP technology could effectively reduce the burning combustion temperature of diesel PM emissions. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1 / 10
页数：10
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