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浙江大学学报(工学版)
浙江大学学报(工学版)
电气工程     
低温等离子体降低柴油机微粒和NOx排放试验研究
徐辉, 蔡忆昔, 李小华, 施蕴曦, 李伟俊
江苏大学 汽车与交通工程学院,江苏 镇江 212013
Experimental study on reduction of particle and nitrogen oxide emissions of diesel engine by non-thermal plasma
XU Hui, CAI Yi xi, LI Xiao hua, SHI Yun xi, LI Wei jun
School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
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摘要：

为降低柴油机微粒（PM）和NOx排放,基于介质阻挡放电原理设计低温等离子体（NTP）发生器|利用NTP,对加装柴油机微粒捕集器的柴油机进行试验研究.结果表明：该工况下,柴油机微粒排放的粒径分布呈单峰分布,93%的微粒是超细微粒|柴油机微粒捕集器（DPF）对微粒数量的捕集效率约为93.8%|NTP活性气体通入后,与未通入NTP的DPF下游微粒的数量密度相比,DPF下游微粒排放的数量密度减小了68%,粒径尺寸在25.5～124.1 nm减小幅度相对较大,约为80%,微粒的几何平均直径也有所减小；DPF和NTP活性气体双重作用可在降低微粒排放的同时降低NOx排放；微粒数量密度减小98%,NOx转化效率约为57%.
Abstract:

The non-thermal plasma (NTP) reactor was designed to decrease diesel engine emission based on dielectric barrier discharge. The experiment was carried out to dispose the harmful emissions of diesel engine with diesel particular(DPF) by NTP. Results show that the particle number size distribution of diesel engine is single peak distribution under the operation condition, of which 93% of particulate matter (PM) are micro-particles. The trapping efficiency of DPF is 93.8% for particle number. After the active NTP gases being pumped in, the particle number concentration of the DPF downstream is cut down by 68%, comparing to that of the DPF downstream without NTP|the average geometry of PM is decreased. Morever, the particulate matter of size distribution between 25.4 and 124.1nm is cut down by 80% obviously. With the function of DPF and NTP, PM emission and NOx emission can be cut down at the same time. The decreasing range of particle number concentration and NOx conversion rate are 98% and 57%, respectively.
出版日期: 2016-12-08
:  TK 421  
基金资助:

国家自然科学基金资助项目（51176067）|江苏省高校优势学科建设资助项目（PDPA）；
江苏省“六大人才高峰”资助项目（2013ZBZZ036）.
通讯作者: 蔡忆昔，男，教授. ORCID：0000-0001-5264-8173.     E-mail: qc001@ujs.edu.cn
作者简介: 徐辉（1990—），男，硕士，从事内燃机工作过程及排放控制研究. ORCID：0000-0003-2675-7979. E-mail: 18796015142@163.com
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引用本文:

徐辉, 蔡忆昔, 李小华, 施蕴曦, 李伟俊 . 低温等离子体降低柴油机微粒和NOx排放试验研究[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2016.12.023.

XU Hui, CAI Yi xi, LI Xiao hua, SHI Yun xi, LI Wei jun. Experimental study on reduction of particle and nitrogen oxide emissions of diesel engine by non-thermal plasma. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2016.12.023.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2016.12.023    或    http://www.zjujournals.com/eng/CN/Y2016/V50/I12/2418

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