燃料挥发性对高压共轨柴油机微粒排放粒度分布的影响

doi:10.7964/jdxbgxb201303011

吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (03): 619-625.doi: 10.7964/jdxbgxb201303011

燃料挥发性对高压共轨柴油机微粒排放粒度分布的影响

孙万臣¹, 孙士龙¹, 王晓丹¹, 李国良¹, 赖春杰^1,2

1. 吉林大学汽车仿真与控制国家重点实验室,长春 130022;
2. 一汽-大众汽车有限公司成都分公司,成都 610100

收稿日期:2012-10-18 出版日期:2013-05-01 发布日期:2013-05-01
通讯作者: 李国良(1963-),男,高级工程师.研究方向:内燃机排放控制技术.E-mail:ligl@jlu.edu.cn E-mail:ligl@jlu.edu.cn
作者简介:孙万臣(1968-),男,教授,博士生导师.研究方向:内燃机燃烧与排放控制.E-mail:sunwc@jlu.edu.cn
基金资助:
国家自然科学基金项目(51176064);吉林省科技发展计划项目(20090542).

Effect of fuel volatility on particle size distribution in common-rail diesel engine

SUN Wan-chen¹, SUN Shi-long¹, WANG Xiao-dan¹, LI Guo-liang¹, LAI Chun-jie^1,2

1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China;
2. FAW-Volkswagen Automotive CO., Ltd., Chengdu branch; Chengdu 610100, China

Received:2012-10-18 Online:2013-05-01 Published:2013-05-01

摘要/Abstract

摘要： 试验研究了燃料挥发性对高压共轨柴油机微粒排放的影响,分析了不同负荷工况下微粒排放粒度分布特征.结果表明:改善燃料挥发性将使中小负荷工况核态微粒数量浓度增加,有利于降低大负荷工况微粒排放数量及质量浓度,燃料挥发性对于积聚态微粒影响较小.对于不同挥发性的燃料,核态微粒数量浓度均在当量比为0.4的中等负荷工况下最大.中小负荷工况下,对于挥发性较差的基础燃料,添加少量易挥发性成分后,核态微粒数量浓度急剧上升.但在中等负荷工况下,随添加比例的增大,挥发性进一步改善的燃料,核态微粒及总微粒数量浓度均有所降低,且积聚态微粒数量浓度变化不大.在大负荷工况下,中等挥发性的燃料(中均沸点为263 ℃)核态微粒和总微粒数量浓度最高,而挥发性好的燃料(中均沸点为244 ℃)核态微粒和总微粒数量浓度最低.

关键词: 动力工程, 高压共轨柴油机, 燃料挥发性, 微粒排放, 粒度分布

Abstract: An experiment investigation was carried out to study the effect of fuel volatility on particle matter emission in common-rail diesel engine, and analyze the characteristics of particle size distribution under different load conditions. The results show that refining the fuel volatility can increase the nuclear state fine particle number concentration in low and medium load condition, reduce the emission fine particle number and mass concentration in high load condition, but has little influence on the accumulative state fine particle number concentration. For different volatile fuels, the fine particle number concentration in nuclear state reaches the highest point at the equivalent ratio of 0.4 with the same fuel in different load conditions. In low and medium load condition, adding small amount of volatile fuel into the fuel with poor volatility will result in sharp increase in the nuclear state fine particle number concentration. With further improvement of the fuel volatility when the adding proportion increased, both nuclear state fine particle number concentration and the total fine particle number concentration decrease in low and medium load condition, but the accumulative state fine particle number concentration rarely changes. For high load condition, with fuel of medium volatility, boiling point of 263 °C, both the nuclear state fine particle number concentration and total fine particle number concentration are the highest. For fuel of better volatility with boiling point of 244 °C, both the nuclear state fine particle number concentration and total fine particle number concentration are the lowest.

Key words: power engineering, common-rail diesel engine, fuel volatility, particulate emission, particle size distribution

中图分类号:

TK421.5

孙万臣, 孙士龙, 王晓丹, 李国良, 赖春杰. 燃料挥发性对高压共轨柴油机微粒排放粒度分布的影响[J]. 吉林大学学报(工学版), 2013, 43(03): 619-625.

SUN Wan-chen, SUN Shi-long, WANG Xiao-dan, LI Guo-liang, LAI Chun-jie. Effect of fuel volatility on particle size distribution in common-rail diesel engine[J]. 吉林大学学报(工学版), 2013, 43(03): 619-625.

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[9] 孙万臣,谭满志,陈士宝,等.燃料特性对柴油机排放微粒粒度分布的影响[J]. 汽车工程,2010,32(7):570-575. Sun Wan-chen, Tan Man-zhi, Chen Shi-bao, et al. Effects of fuel properties on particle size distribution in diesel engine emission[J]. Automotive Engineering, 2010, 32(7) :570-575.

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燃料挥发性对高压共轨柴油机微粒排放粒度分布的影响

Effect of fuel volatility on particle size distribution in common-rail diesel engine

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