YUAN Yinnan1,2, XIAO Zhengzhen1, MEI Deqing1, ZHANG Dengpan1, LU Haifeng3
（1. School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China;2. School of Mechanical Engineer, Nantong University, Nantong 226019, China;3. Jiangsu Jianghuai Engine Co.，Ltd., Yancheng 224007, China）
Abstract: In an electronically controlled high pressure common-rail diesel engine which met the national V emission standard, the particle concentration and extinction characteristics of various biodiesels were detected using the engine exhaust particle sizer （EEPS） and an opaque smoke meter （AVL439）, and their difference between before and after post-treatments was compared. The results show that for various fuels, their concentration of nucleation-mode particles and accumulation-mode particles decline within sequence of diesel, palm oil biodiesel （PB）, waste oil biodiesel （WB） and soybean oil biodiesel （SB）. After the post-processing, their number concentrations decrease and move toward small particle sizes. For PB, WB, and SB, their extinction emission factors decrease gradually, and the extinction performance is improved little by little. In term of extinction, biodiesel is an environment-friendly fuel. Under the modes of one given speed, with the increasing of load, the average particle mass extinction cross-section of the four fuels’ emission particles gradually decrease, while after the post-processing, the average particle mass extinction cross-section increases significantly. That is to say, the average extinction ability of unit mass particles decrease with the increasing of load and increase with adopting post-processing.
Keywords: biodiesel; particle; extinction emission factor; average particle mass extinction cross-section
中图分类号： TK6 文献标志码：A
收稿日期： 2021-04-19， 修回日期：2022-07-05，在线出版时间：2022-11-01。
基金项目：国家自然科学基金项目，编号：51876133； 51876082。
第一作者简介：袁银男（1959—），男，教授，博士生导师，主要从事动力机械清洁燃烧与排放控制。E-mail： yuanyn@suda.ujs.edu.cn。
通信作者简介：梅德清（1974—），男，教授，硕士生导师，主要从事动力机械清洁燃烧与排放控制。E-mail： meideqing@ujs.edu.cn。
文章编号：1008-5548（2022）06-0070-08
DOI:10.13732/j.issn.1008-5548.2022.06.009
