[1]杜家益,张翰亮,张登攀,等.EGR对生物柴油颗粒物氧化活性及微观结构的影响[J].内燃机学报,2021,(02):138-146.
　Du Jiayi,Zhang Hanliang,Zhang Dengpan,et al.Influence of EGR and Diesel-Biodiesel Blend on Oxidation Reactivity and Nanostructure of Particulate Matter in Diesel Engine[J].,2021,(02):138-146.
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EGR对生物柴油颗粒物氧化活性及微观结构的影响
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《内燃机学报》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2021年02
页码:
138-146
栏目:
出版日期:
2021-03-25

文章信息/Info

Title:
Influence of EGR and Diesel-Biodiesel Blend on Oxidation Reactivity and Nanostructure of Particulate Matter in Diesel Engine
作者:
杜家益; 张翰亮; 张登攀; 逄大庆; 袁银男
(1. 江苏大学 汽车与交通工程学院，江苏 镇江 212013；2. 常柴股份有限公司，江苏 常州 213001；3. 苏州大学 能源学院，江苏 苏州 215006)
Author(s):
Du Jiayi1; Zhang Hanliang1; Zhang Dengpan1; Pang Daqing2; Yuan Yinnan3
(1. School of Automotive and Traffic Engineering，Jiangsu University，Zhenjiang 212013，China；2. Changchai Company Limited，Changzhou 213001，China；3. College of Energy，Soochow University，Suzhou 215006，China)
关键词:
柴油机; 生物柴油; 颗粒物; 氧化活性; 微观结构
Keywords:
diesel engine; biodiesel; particulate matter; oxidation reactivity; nanostructure
分类号:
TK421.5
文献标志码:
A
Abstract:
Combined effects of exhaust gas recirculation(EGR)rate and biodiesel blends(B0，B20)on oxidation reactivity and nanostructure of particular matters(PM) were collected and investigated experimentally on a four-cylinder common rail diesel engine by using thermogravimetric analyzer(TGA)，high resolution transmission electron mi-croscopy(HRTEM) and Raman spectroscopy(RS) to study burning particulate matter. The results show that when the same fuel is used，as the EGR rate increases，the dry soot content in the particles increases，the initial oxida-tion temperature Ti increases，the apparent oxidation activation energy gradually increases，and the oxidation re-activity decreases；compared with the B0 particles，the dry soot content in the B20 particles slightly decreases，the initial oxidation temperature Ti decreases，the apparent activation energy decreases，and the oxidation reactiv-ity increases. With the increase of EGR rate，the core-shell structure of the particulate matters is more obvious. When the EGR rate increases from 0 to 25%，the average fringe length of the primary particles from B0 particles and B20 particles increases by 20% and 25%，respectively. The average fringe tortuosity reduces by 10% and 7% and the average fringe separation distance reduces by 5.8% and 6.0%. Also，with the increase of EGR rate，the IG/ID of B0 particles and B20 particles are increased，and the degree of graphitization is increased gradually.

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更新日期/Last Update: 2021-03-25