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汽车安全与节能学报

汽车安全与节能学报 ›› 2012, Vol. 3 ›› Issue (1): 77-83.DOI: 10.3969/j.issn.1674-8484.2012.01.012

• 汽车节能与环保 • 上一篇    

采用改进碳烟模型的柴油机碳烟颗粒物生成及尺寸分布

鞠洪玲1，成晓北1，汪方阳1，王 志2   

  1. 1. 华中科技大学 能源与动力工程学院，武汉 430074, 中国；
    2. 清华大学 汽车安全与节能国家重点实验室，北京 100083, 中国
  • 收稿日期:2011-11-07 出版日期:2012-03-25 发布日期:2012-03-28
  • 通讯作者: 成晓北，副教授。E-mail ：chengxiaobei@sina.com E-mail:juhongling@foxmail.com
  • 作者简介:鞠洪玲(1982—)，女（汉），山东，博士研究生。E-mail ：juhongling@foxmail.com
  • 基金资助:

    国家自然科学基金资助项目（50976039）；清华大学汽车安全与节能国家重点实验室开放基金（KF10112）

Soot particles generation characteristics and size distribution in a diesel engine using an improved soot detail model

JU Hongling 1, CHENG Xiaobei 1, WANG Fangyang 1, WANG Zhi 2   

  1. 1.College of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
    2. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100083, China
  • Received:2011-11-07 Online:2012-03-25 Published:2012-03-28

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摘要： 柴油机; 碳烟颗粒; 尺寸分布; 精细碳烟模型；多环芳香烃（PAHs）；低压撞击器（LPI）测量

关键词: 柴油机, 碳烟颗粒, 尺寸分布, 精细碳烟模型, 多环芳香烃（PAHs）, 低压撞击器（LPI）测量

Abstract: Soot emission mass distributions and particle size distributions in diesel engines were simulated using
an improved soot model. The soot emission mass was measured in a single cylinder diesel engine using a low
pressure impactor (LPI). The model was developed based on an existing detailed soot model with the following
three improvements, using n-tetradecane as fuel instead of n-heptane, coupling “shell” auto-ignition model with
other models in KIVA-3V, and in the multi-steps soot model, considering PAHs (polycyclic aromatic hydrocarbons)
direct deposition at the soot particle surface. The results show that PAHs deposition makes great contributions to
increase soot particle mass with soot particle size determined by the development of PAHs in different stages and
that the soot particle formation change trend by simulation is consistent with that by measurement. Therefore, the
improved soot model can preferably predict the change trend of soot particles generation characteristics.

Key words: diesel engine;, soot particle, size distribution, soot detail model, low pressure impactor (LPI) measure

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