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[1]杨新乐,乔约翰,李 浩,等.后喷策略对柴油机排气污染物的影响[J].燃烧科学与技术,2017,(03):212-216.[doi:DOI 10.11715/rskxjs.R201603060]
 Yang Xinle,QiaoYuehan,Li Hao,et al.Influence of Post-Injection Strategy on the Exhaust Emissionsfrom a HSDI Diesel Engine[J].Journal of Combustion Science and Technology,2017,(03):212-216.[doi:DOI 10.11715/rskxjs.R201603060]
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后喷策略对柴油机排气污染物的影响()
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《燃烧科学与技术》[ISSN:1006-8740/CN:12-1240/TK]

卷:
期数:
2017年03
页码:
212-216
栏目:
出版日期:
2017-06-15

文章信息/Info

Title:
Influence of Post-Injection Strategy on the Exhaust Emissions from a HSDI Diesel Engine
作者:
杨新乐 1乔约翰 1李 浩 2吕 刚 2
1. 辽宁工程技术大学机械工程学院,阜新 123000; 2. 天津大学内燃机燃烧学国家重点实验室,天津 300072
Author(s):
Yang Xinle1QiaoYuehan1Li Hao2Lü Gang2
1.School of Mechanical Engineering,Liaoning Technical University,Fuxin 123000,China; 2.State Key Laboratory of Engines,Tianjin University,Tianjin 300072,China
关键词:
柴油机主后喷间隔后喷率污染物排放碳烟氧化活性
Keywords:
diesel enginemain post-injection intervalpost-injection ratepollutant emissionssoot reactivity
分类号:
TK421.5
DOI:
DOI 10.11715/rskxjs.R201603060
文献标志码:
A
摘要:
在一台电控高压共轨柴油机上,研究了后喷策略对柴油机排放的影响.实验工作在恒定工况下进行,选 择不同主后喷间隔及后喷率,测量了 CO、总碳氢化合物、氮氧化物、颗粒物排放的排放值;同时,还考察了排 气碳烟的表观活化能和石墨化程度.实验结果表明:随着主后喷间隔及后喷率增加,CO 和总碳氢化合物呈上升 趋势,而 NOx 呈下降趋势;后喷率为 12%,和 20%,时,无论过大或过小的主后喷间隔,颗粒物排放均有明显的增 加;后喷率为 4%,时,随着主后喷间隔的增加,颗粒物的排放量增加.后喷对碳烟微粒的活化能有较强的影响, 而碳烟石墨化程度的变化也证明了此结果.
Abstract:
A four-cylinder,direct-injection diesel engine equipped with a high-pressure,common-rail fuel injection system was tested under a constant engine operating mode to investigate the effect of post-injection strategy on pollutant emissions.Characteristics of exhaust pollutants were measured and evaluated for different main-post intervals(MPIs)and post-injection rates(PIRs).Measurements included emissions of carbon monoxide(CO),total hydrocarbons(THC),nitrogen oxides(NOx)and particulate matter(PM),the reactivity and graphitization degree of soot particles.Increasing the MPI or PIR increased the emissions of CO and THC but decreased those of NOx.At both low and high MPI values,higher PM emissions and particle number concentrations were observed for 12% and 20% PIRs.At 4% PIR,PM emissions and particle number concentration increased with increasing MPI.Post injection significantly influenced the reactivity of emitted soot particles,as was evidenced by changes in the graphitization degree of soot.

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备注/Memo

备注/Memo:
收稿日期:2016-03-29 基金项目:国家重点基础研究发展计划(973 计划)资助项目(2013CB228502);国家自然科学基金资助项目(51574136). 作者简介:杨新乐(1980— ),男,博士,教授,yxl2003@sina.com. 通讯作者:吕 刚,男,副教授,lvg@tju.edu.cn.
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