汽车工程 ›› 2020, Vol. 42 ›› Issue (11): 1545-1551.doi: 10.19562/j.chinasae.qcgc.2020.11.013

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润滑油添加剂对柴油机颗粒物微观物理特性的影响研究*

许广举, 高鉴, 李铭迪, 赵洋, 林玲   

  1. 常熟理工学院汽车工程学院,常熟 215500
  • 收稿日期:2019-11-04 出版日期:2020-11-25 发布日期:2021-01-25
  • 通讯作者: 李铭迪,副教授,博士,E-mail:lmd-fj@163.com。
  • 基金资助:
    *国家自然科学青年基金项目(51506011)和江苏省自然科学青年基金项目(BK20160406)资助。

Study on the Effect of Lubricating Oil Additives on the Microphysical Properties of Diesel Particulate Matter

Xu Guangju, Gao Jian, Li Mingdi, Zhao Yang, Lin Ling   

  1. Department of Automobile Engineering, Changshu Institute of Technology, Changshu 215500
  • Received:2019-11-04 Online:2020-11-25 Published:2021-01-25

摘要: 本文选用3种不同的润滑油添加剂配置了试验燃油,开展了柴油机台架试验并采集了颗粒物样品,综合运用SEM/TEM/Raman spectra等分析手段,研究了润滑油添加剂对颗粒物形貌特征、结构特征和石墨化程度的影响规律。研究结果表明,颗粒物直径取决于燃料多环芳香烃的含量。颗粒物的微晶尺寸随着燃料十六烷值的增加而减小,微晶尺寸越大,碳层结构的有序化程度越高。颗粒物基本碳粒子的曲率越大,碳层的电子共振稳定性越差。

关键词: 润滑油添加剂, 颗粒微观形态, 结构特征, 石墨化, 拉曼光谱

Abstract: In this paper, three different lubricating oil additives are used to configure the test fuel. The diesel engine bench tests are conducted and particulate samples are collected. Then the effect of lubricant additives on particle morphology, structural characteristics and graphitization degree are studied by means of SEM/TEM/Raman spectra. The results show that the particle diameter depends on the PAHs content of the fuel. The microcrystalline size of particles decreases with the increase of fuel cetane value. The larger the microcrystalline size, the higher the degree of ordering of carbon layer structure.The larger the curvature of the basic carbon particle, the worse the electron resonance stability of the carbon layer

Key words: lubricating oil additive, micromorphology of particles, structural characteristics, graphitization degree, Raman spectroscopy