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低硫柴油直喷燃烧超细颗粒排放特性研究 被引量:9

Characteristics of ultrafine particle from a compression-ignition engine fueled with low sulfur diesel
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摘要 对比研究了燃用普通柴油和低硫柴油其排气超细颗粒数量浓度分布及化学成分特征.结果表明,相对于燃用普通柴油,燃用低硫柴油其排气总颗粒质量浓度略有降低,而数量浓度显著降低,且降幅随负荷和转速增大.燃用普通柴油和低硫柴油其排气微粒数浓度粒径分布曲线形状基本相似,同一测试工况下,相对于燃用普通柴油,燃用低硫柴油其排气积聚模态微粒数量浓度变化较小,而核模态微粒排放显著降低.发动机排气微粒主要由C,O,Cl,S,Si,Ca,Na,Al,K元素组成,燃用普通柴油和低硫柴油其排气微粒元素组成基本相似,但燃用低硫柴油排气微粒中没有发现S元素.排气微粒中挥发性有机物(SOF)主要成分有饱和烷烃(碳原子数为C15-C26)、有机酸酯和多环芳烃等.燃用低硫柴油时微粒采样中未发现多环芳烃.
出处 《科学通报》 EI CAS CSCD 北大核心 2009年第12期1773-1778,共6页 Chinese Science Bulletin
基金 高等学校博士学科点专项科研基金资助项目(批准号:20070248024)
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参考文献23

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