废气再循环对柴油机颗粒结构特征与氧化活性的影响

华琰; 王忠; 李瑞娜; 刘帅; 赵洋; 梅德清; 吕辉

doi:10.7652/xjtuxb202205003

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废气再循环对柴油机颗粒结构特征与氧化活性的影响

专题清洁燃烧 | 更新时间：2025-07-09

- 废气再循环对柴油机颗粒结构特征与氧化活性的影响
- Effect of Exhaust Gas Recirculation on Particle Structure Characteristics and Oxidation Activity of Diesel Engines
- 西安交通大学学报 2022年56卷第5期页码：21-30
- 作者机构：
  
  1. 江苏大学汽车与交通工程学院,江苏,镇江,212013
  2. 西华大学汽车测控与安全四川省重点实验室,成都,610000
  3. 西华大学四川省新能源汽车智能控制与仿真测试技术工程研究中心,成都,610000
  4. 常熟理工学院汽车工程学院, 江苏常熟,215500
- 作者简介：
  
  : 2021-10-20。作者简介: 华琰(1994—),女,博士生
  王忠(通信作者),男,教授,博士生导师。基金项目: 国家自然科学基金资助项目(51876082)
- 基金信息：
  
  : 2021-10-20。作者简介: 华琰(1994—),女,博士生;王忠(通信作者),男,教授,博士生导师。基金项目: 国家自然科学基金资助项目(51876082);江苏省自然科学基金资助项目(BK20200910);四川省新能源汽车智能控制与仿真测试技术工程研究中心开放课题资助项目(XNYQ2021-003)
- DOI：10.7652/xjtuxb202205003
  中图分类号： TK421
- 网络首发：2022-05-10，
  
  纸质出版：2022
- 稿件说明：
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华琰, 王忠, 李瑞娜, 等. 废气再循环对柴油机颗粒结构特征与氧化活性的影响[J]. 西安交通大学学报, 2022,56(5):21-30.

Effect of Exhaust Gas Recirculation on Particle Structure Characteristics and Oxidation Activity of Diesel Engines[J]. 2022, 56(5): 21-30.
华琰, 王忠, 李瑞娜, 等. 废气再循环对柴油机颗粒结构特征与氧化活性的影响[J]. 西安交通大学学报, 2022,56(5):21-30. DOI： 10.7652/xjtuxb202205003.

Effect of Exhaust Gas Recirculation on Particle Structure Characteristics and Oxidation Activity of Diesel Engines[J]. 2022, 56(5): 21-30. DOI： 10.7652/xjtuxb202205003.

摘要

为探究废气再循环(EGR)对柴油机颗粒结构特征与氧化活性的影响规律

采集了不同废气质量分数的F-T柴油、生物柴油和柴油3种燃料的燃烧颗粒

运用粒径谱仪(EEPS)、透射电镜(TEM)、热重分析仪(TGA)等方法

探究了颗粒物的结构特征与氧化活性。结果显示

随着废气质量分数的增加

颗粒物平均粒径、分形维数D

、基本粒子的层面间距d和微晶曲率T

升高

微晶尺寸L

、氧化特征温度和表观活化能E

降低

颗粒物结构更加紧凑

团聚程度增加

碳层有序性减弱

颗粒稳定性变差

氧化活性增强

表明采用EGR技术可降低颗粒捕集器(DPF)的再生温度。废气质量分数相同时

柴油产生的颗粒物平均粒径最大

比F-T柴油升高了3.3%～7.1%; 燃用生物柴油的颗粒物基本粒子碳层排列更加无序

氧化反应活性较强; 当颗粒基本粒子具有更宽的d、更短的L

和更大的T

时

颗粒氧化活性更强。

Abstract

To discuss the effect of exhaust gas recirculation(EGR)on particle structure characteristics and oxidation activity of diesel engines

the particles produced by the combustion of F-T diesel

biodiesel and common diesel under different exhaust gas mass fractions are collected

and such means as engine exhaust particle sizer(EEPS)

transmission electron microscope(TEM)and thermogravimetric analysis(TGA)are used to study their structure characteristics and oxidation activity. The results show that with the increase of mass concentratio

the average particle size

fractal dimension(D

)

layer spacing(d)of basic particles and microcrystalline curvature(T

)increased

the microcrystalline size(L

)

oxidation characteristic temperature and apparent activation energy(E

)decreased

and it saw more compact particle structure

increased agglomeration

weakened order of carbon layer

worse particle stability

and enhanced oxidation activity. This indicates that the regeneration temperature of diesel particulate filter(DPF)can be reduced by using EGR technology. Moreover

when the exhaust gas mass fraction was the same

the mean size of common diesel particles was the largest

which was 3.3%-7.1% higher than that of F-T diesel. The particles with biodiesel were more disordered and had strong oxidation activity. When the basic particles have wider d

shorter L

and larger T

the oxidation activity of the particles was stronger.

关键词

Keywords

references

朱瑞军, 王锡斌, 冉帆, 等. EGR和冷EGR对柴油机燃烧和排放的影响 [J]. 西安交通大学学报, 2009, 43(9): 23-26, 55.

ZHU Ruijun, WANG Xibin, RAN Fan, et al. Effects of EGR and cooled EGR on combustion and emission of a diesel engine [J]. Journal of Xi'an Jiaotong University, 2009, 43(9): 23-26, 55.

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, 39(2): 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]. Transactions of CSICE, 2021, 39(2): 138-146.

刘理凡, 王忠, 刘帅, 等. 柴油机排气颗粒吸附与结构特征试验研究 [J]. 西安交通大学学报, 2020, 54(3): 134-142.

LIU Lifan, WANG Zhong, LIU Shuai, et al. Experimental study on adsorption and structural feature of diesel engine exhaust particles [J]. Journal of Xi'an Jiaotong University, 2020, 54(3): 134-142.

叶丽华, 孙程炜, 郑庆明, 等. 正戊醇/F-T柴油混合燃料颗粒官能团与碳原子研究 [J]. 内燃机学报, 2018, 36(6): 524-530.

YE Lihua, SUN Chengwei, ZHENG Qingming, et al. Study on functional group and carbon atom of particles with n-pentanol/Fischer-Tropsch diesel blended fuel [J]. Transactions of CSICE, 2018, 36(6): 524-530.

王忠, 杨家翚, 李瑞娜, 等. EGR组分对煤液化柴油颗粒排放的影响 [J]. 中国环境科学, 2018, 38(11): 4050-4055.

WANG Zhong, YANG Jiahui, LI Ruina, et al. Effects of EGR components on particle of coal liquefied diesel [J]. China Environmental Science, 2018, 38(11): 4050-4055.

杜家益, 杨启航, 张登攀, 等. 碘值对生物柴油燃烧颗粒物粒径分布和碳质组分的影响 [J]. 西安交通大学学报, 2021, 55(5): 18-24.

DU Jiayi, YANG Qihang, ZHANG Dengpan, et al. Effect of iodine value on the particle size distribution and carbon component of three biodiesels [J]. Journal of Xi'an Jiaotong University, 2021, 55(5): 18-24.

LABECKI L, LINDNER A, WINKLMARY W, et al. Effects of injection parameters and EGR on exhaust soot particle number-size distribution for diesel and RME fuels in HSDI engines [J]. Fuel, 2013, 112: 224-235.

SUN Chunhua, LIU Yu, QIAO Xinqi, et al. Experimental study of effects of exhaust gas recirculation on combustion, performance, and emissions of DME-biodiesel fueled engine [J]. Energy, 2020, 197: 117233.

TEINI P D, KARWAT D M A, ATREYA A. The effect of CO2/H2O on the formation of soot particles in the homogeneous environment of a rapid compression facility [J]. Combustion and Flame, 2012, 159(3): 1090-1099.

ZHANG Wei, SONG Chonglin, LYU Gang, et al. Petroleum and Fischer-Tropsch diesel soot: a comparison of morphology, nanostructure and oxidation reactivity [J]. Fuel, 2021, 283: 118919.

MAN X J, CHEUNG C S, NING Z, et al. Effect of waste cooking oil biodiesel on the properties of particulate from a DI diesel engine [J]. Aerosol Science and Technology, 2015, 49(4): 199-209.

WANG Xiaochen, WANG Ying, BAI Yuanqi, et al. Effects of 2, 5-dimethylfuran addition on morphology, nanostructure and oxidation reactivity of diesel exhaust particles [J]. Fuel, 2019, 253: 731-740.

VERMA P, PICKERING E, JAFARI M, et al. Influence of fuel-oxygen content on morphology and nanostructure of soot particles [J]. Combustion and Flame, 2019, 205: 206-219.

郭富男, 汪映, 王小琛, 等. 不同结构芳香烃对柴油燃烧颗粒物理化特性的影响 [J]. 西安交通大学学报, 2020, 54(11): 19-25.

GUO Funan, WANG Ying, WANG Xiaochen, et al. Effects of aromatics with different structures on the physicochemical properties of diesel burning particulate matter [J]. Journal of Xi'an Jiaotong University, 2020, 54(11): 19-25.

WANG Xiaochen, WANG Ying, BAI Yuanqi. Oxidation behaviors and nanostructure of particulate matter produced from a diesel engine fueled with n-pentanol and 2-ethylhexyl nitrate additives [J]. Fuel, 2021, 288: 119844.

QIAN Weiwei, HUANG Haozhong, PAN Mingzhang, et al. Analysis of morphology, nanostructure, and oxidation reaction of soot particulates from CI engines with dimethoxymethane-diesel blends under different loads and speeds [J]. Fuel, 2020, 278: 118263.

WEI Jiangjun, LU Wenjian, PAN Mingzhang, et al. Physical properties of exhaust soot from dimethyl carbonate-diesel blends: characterizations and impact on soot oxidation behavior [J]. Fuel, 2020, 279: 118441.

LIU Junheng, WU Pengcheng, SUN Ping, et al. Effects of iron-based fuel borne catalyst addition on combustion, in-cylinder soot distribution and exhaust emission characteristics in a common-rail diesel engine [J]. Fuel, 2021, 290: 120096.

NEER A, KOYLU U O. Effect of operating conditions on the size, morphology, and concentration of submicrometer particulates emitted from a diesel engine [J]. Combustion and Flame, 2006, 146(1/2): 142-154.

ZHANG Renlin, ZHANG Yilong, KOOK S. Morphological variations of in-flame and exhaust soot particles associated with jet-to-jet variations and jet-jet interactions in a light-duty diesel engine [J]. Combustion and Flame, 2017, 176: 377-390.

BRASIL A M, FARIAS T L, CARVALHO M G. A recipe for image characterization of fractal-like aggregates [J]. Journal of Aerosol Science, 1999, 30(10): 1379-1389.

VANDER WAL R L. Soot nanostructure: definition, quantification and implications [C]∥Proceedings of the SAE 2005 World Congress Exhibition. Warrendale, PA, USA: SAE International, 2005: 2005-01-0964.

VANDER WAL R L, TOMASEK A J, PAMPHLET M I, et al. Analysis of HRTEM images for carbon nanostructure quantification [J]. Journal of Nanoparticle Research, 2004, 6(6): 555-568.

梅德清, 赵翔, 王书龙, 等. 柴油机排放颗粒物的热重特性分析 [J]. 农业工程学报, 2013, 29(16): 50-56.

MEI Deqing, ZHAO Xiang, WANG Shulong, et al. Thermogravimetric characteristics analysis of particulate matter of emission of divided diesel [J]. Transactions of the Chinese Society of Agricultural Engineering, 2013, 29(16): 50-56.

JARAMILLO I C, GADDAM C K, VANDER WAL R L, et al. Soot oxidation kinetics under pressurized conditions [J]. Combustion and Flame, 2014, 161(11): 2951-2965.

AGUDELO J R, ÁLVAREZ A, ARMAS O. Impact of crude vegetable oils on the oxidation reactivity and nanostructure of diesel particulate matter [J]. Combustion and Flame, 2014, 161(11): 2904-2915.

孙万臣, 刘高, 郭亮, 等. 微粒捕集器对高压共轨柴油机超细微粒捕集特性 [J]. 吉林大学学报(工学版), 2016, 46(1): 133-139.

SUN Wanchen, LIU Gao, GUO Liang, et al. Efficiency of DPF on ultrafine particles in a common-rail diesel engine [J]. Journal of Jilin University(Engineering and Technology Edition), 2016, 46(1): 133-139.

丁焰, 葛蕴珊, 王军方, 等. 生物柴油发动机PM排放的理化特性研究 [J]. 内燃机工程, 2010, 31(3): 39-43.

DING Yan, GE Yunshan, WANG Junfang, et al. Physical chemical characteristics of PM emitted from bio-diesel engines [J]. Chinese Internal Combustion Engine Engineering, 2010, 31(3): 39-43.

VANDER WAL R L, MUELLER C J. Initial investigation of effects of fuel oxygenation on nanostructure of soot from a direct-injection diesel engine [J]. Energy Fuels, 2006, 20(6): 2364-2369.

LI Zheng, SONG Chonglin, SONG Jinou, et al. Evolution of the nanostructure, fractal dimension and size of in-cylinder soot during diesel combustion process [J]. Combustion and Flame, 2011, 158(8): 1624-1630.

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