Fe-FBC燃油对柴油机醛类和颗粒物排放的影响  

Effect of Fe-FBC fuel on aldehydes and particulate matter emissions of diesel engine

作　　者：商潭苏 魏明亮[3] 孙平 嵇乾[4] 刘军恒 SHANG Tansu;WEI Mingliang;SUN Ping;JI Qian;LIU Junheng(School of Mechanical Engineering, Tianjin University, Tianjin 300072, China;Luoyang Tractor Research Institute Co., Ltd., Luoyang, Henan 471039, China;State Key Laboratory of Power System of Tractor, Luoyang, Henan 471039, China;School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China)

机构地区：[1]天津大学机械工程学院,天津300072 [2]洛阳拖拉机研究所有限公司,河南洛阳471039 [3]拖拉机动力系统国家重点实验室,河南洛阳471039 [4]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2021年第2期125-130,共6页Journal of Jiangsu University：Natural Science Edition

基　　金：拖拉机动力系统国家重点实验室开放课题(AKT2019003);中国博士后科学基金资助项目(2020M672133)。

摘　　要：为了控制柴油机颗粒物排放,将燃油添加剂(FBC)按Fe元素质量分数分别为200、400、600 mg·kg-1掺混于柴油中制备出Fe-FBC燃油,分别标记为Fe200、Fe400和Fe600.采用傅里叶红外分析仪(FTIR)、发动机粒径谱仪(EEPS)和气相色谱质谱联用仪(GC-MS),研究了Fe-FBC燃油对共轨柴油机醛类排放、颗粒的粒径分布以及可溶性有机物组分(SOF)的影响.结果表明:Fe-FBC的加入促进了柴油的燃烧,燃用Fe-FBC燃油时的甲醛和乙醛排放均较纯柴油低;颗粒数量浓度和质量浓度分布逐渐向小粒径方向偏移;随着Fe-FBC中Fe元素质量分数的升高,峰值数量浓度逐渐增加,峰值质量浓度则逐渐降低;柴油中添加Fe-FBC后,颗粒SOF中烯烃、酸类、多环芳香烃类(PAHs)质量分数下降,PAHs由高环数向低环数转换,而脂类质量分数却上升;同时,SOF组分的碳原子数分布整体由高碳原子向低碳原子迁移,SOF组分中高碳原子数目降低,低碳原子数目升高.To control the particulate matter(PM)emissions of diesel engine,the fuel borne catalysts(FBC)were blended into pure diesel with Fe mass fractions of 200,400 and 600 mg·kg-1 to prepare Fe-FBC fuels,which were marked as Fe200,Fe400 and Fe600,respectively.The effects of Fe-FBC fuels on common-rail diesel engine emission characteristics,particle size distribution and soluble organic fraction(SOF)components were investigated by fourier transform infrared(FTIR)emission analyzer,engine exhaust particle sizer(EEPS)spectrometer and gas chromatography-mass spectrometry(GC-MS),respectively.The results show that the addition of FBC promotes the combustion of diesel,and the formaldehyde and acetaldehyde emissions are lower than those of pure diesel.With the increasing of Fe content in Fe-FBC,the particle number concentration and the mass concentration distribution are gradually shifted to smaller size.After adding Fe-FBC,the contents of olefins,acids and polycyclic aromatic hydrocarbons(PAHs)in PM are decreased,and PAHs is changed to lower ring number,while lipid content is increased.The distribution of carbon atom number of SOF components is migrated to lower carbon atom.

关 键 词：燃油添加剂 共轨柴油机 醛排放 颗粒粒径 可溶性有机物组分 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]