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Research on the Soot Generation of Diesel Surrogate Mechanisms of Different Carbon Chain Length

Author

Listed:
  • Xingyu Liang

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Zhijie Zhu

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Xinyi Cao

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Kun Wang

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Yuesen Wang

    (Sloan Automotive Laboratory, MIT, Cambridge, MA 02139, USA)

Abstract

This paper studies the generation process and emission characteristics of soot from Marine diesel engine. On the basis of Particulate size mimic (PSM) detailed soot model, the parameters related to soot generation obtained from the reaction mechanism calculation of 3 surrogate of different carbon chain length: n-heptane, n-tetradecane and n-tetradecane-toluene were compared and analyzed including precursor of soot, quality and density of soot, particle size distribution of empirical soot model. The results show that the soot nucleation stage of n-tetradecane-toluene mechanism was slightly more consistent than that of n-tetradecane mechanism with the experimental results, far more consistent than that of n-heptane mechanism. The intensity of surface growth and aggregation stage is greater, which is reflected in the soot precursor: acetylene and A4, and leads to that the soot produced by the mechanism of n-tetradecane and n-tetradecane-toluene is small in quality but large in quantity. The particle size distribution calculated by n-tetradecane and n-tetradecane-toluene mechanism is closer to the experimental data than that calculated by n-heptane mechanism. Then combustion process of n-tetradecane and n-tetradecane-toluene mechanism is more suitable for marine engine, which is reflected in the higher temperature and the smaller equivalent ratio in the cylinder.

Suggested Citation

  • Xingyu Liang & Zhijie Zhu & Xinyi Cao & Kun Wang & Yuesen Wang, 2022. "Research on the Soot Generation of Diesel Surrogate Mechanisms of Different Carbon Chain Length," Energies, MDPI, vol. 15(20), pages 1-17, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:20:p:7625-:d:943308
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    References listed on IDEAS

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    1. Raptotasios, Spiridon I. & Sakellaridis, Nikolaos F. & Papagiannakis, Roussos G. & Hountalas, Dimitrios T., 2015. "Application of a multi-zone combustion model to investigate the NOx reduction potential of two-stroke marine diesel engines using EGR," Applied Energy, Elsevier, vol. 157(C), pages 814-823.
    2. Sun, Xiuxiu & Liang, Xingyu & Shu, Gequn & lin, Jiansheng & Wei, Haiqiao & Zhou, Peilin, 2018. "Development of a surrogate fuel mechanism for application in two-stroke marine diesel engine," Energy, Elsevier, vol. 153(C), pages 56-64.
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