主办：陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊：1976年
汽车实用技术

汽车实用技术 ›› 2023, Vol. 48 ›› Issue (16): 86-90.DOI: 10.16638/j.cnki.1671-7988.2023.016.017

• 测试试验 • 上一篇    

生物柴油对柴油机细颗粒物数量排放特性研究

郭亚辰，隋 航，吴春玲*，景晓军   

  1. 中汽研汽车检验中心（天津）有限公司
  • 出版日期:2023-08-30 发布日期:2023-08-30
  • 通讯作者: 吴春玲
  • 作者简介:郭亚辰（1990－），男，助理工程师，研究方向为汽车污染物排放，E-mail:guoyachen@catarc.ac.cn。

Study on the Emission Characteristics of Biodiesel on the Fine Particles Number in Diesel Engines

GUO Yachen, SUI Hang, WU Chunling* , JING Xiaojun   

  1. CATARC Automotive Test Center (Tianjin) Company Limited
  • Online:2023-08-30 Published:2023-08-30
  • Contact: WU Chunling

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摘要： 论文选取一台满足现行国六排放标准的重型柴油机，使用 B7 柴油、B20 柴油两种燃料， 在发动机台架上进行污染物排放测试，重点对细颗粒物数量（PN）排放进行分析。结果表明， 使用 B7 柴油和 B20 柴油，各国六循环的 PN10 比排放量较 PN23 高 72%～132%，与用柴油 为燃料时规律近似。随着该两种生物柴油体积比提高，各循环 PN23 和 PN10 基本呈下降趋势， 但粒径 10～23 nmPN 排放占比依然较大。在冷态世界统一瞬态试验循环（WHTC）的启动阶 段 B20 柴油较 B7 柴油的 PN10 更高，这可能与生物柴油密度和运动粘度均高于石化柴油有关， 当使用生物柴油时需考虑对喷油器雾化进行进一步优化。

关键词: 重型柴油机；生物柴油；细颗粒物；颗粒物数量；排放

Abstract: A heavy-duty diesel engine that meets the current China Ⅵ emission standards is selected to run pollutant emission test on the engine test bench, used two fuels including B7 diesel and B20 diesel, with emphasis on the analysis of fine particulate number (PN) emission. The results show that the specific emission of PN10 in each cycle is 72%～132% higher than that of PN23 when the two biodiesel fuel are used, which is similar to that when diesel is used as fuel. With the increase of the volume ratio of two kinds of biodiesel, PN23 and PN10 in each cycle basically showed a downward trend, but the PN emission proportion of particle size 10～23 nm is still large. At the start-up stage of cold world harmonized transient cycle (WHTC), PN10 of B20 diesel is higher than that of B7 diesel, which may be related to the fact that the density and kinematically viscosity of biodiesel are higher than that of petrochemical diesel. Further optimization of atomization of injector should be considered when using biodiesel.

Key words: Diesel engine; Biodiesel; Fine particle; Particle number; Emission