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Numerical investigation of the effect of two-stage injection strategy on combustion and emission characteristics of a diesel engine

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  • Yu, Hanzhengnan
  • Liang, Xingyu
  • Shu, Gequn
  • Wang, Yuesen
  • Sun, Xiuxiu
  • Zhang, Hongsheng

Abstract

This work assessed two types of two-stage injection strategies for the operation of a diesel engine: pilot and early injection. The effects of the two-stage injection interval and the first-stage fuel injection proportion on the combustion and emission characteristics when employing these two injection strategies were investigated by numerical modeling, dividing the in-cylinder zone into three different regions. Variations in the NOx, soot, HC and CO emissions in each region were determined at various values of two-stage injection interval and first-stage fuel injection proportion for both strategies. The results demonstrate that, considering both the engine combustion and emission characteristics, a two-stage injection strategy in conjunction with an injection interval of 30–40°CA and a first-stage fuel injection proportion of 30–60% is advisable.

Suggested Citation

  • Yu, Hanzhengnan & Liang, Xingyu & Shu, Gequn & Wang, Yuesen & Sun, Xiuxiu & Zhang, Hongsheng, 2018. "Numerical investigation of the effect of two-stage injection strategy on combustion and emission characteristics of a diesel engine," Applied Energy, Elsevier, vol. 227(C), pages 634-642.
    • Handle: RePEc:eee:appene:v:227:y:2018:i:c:p:634-642
    DOI: 10.1016/j.apenergy.2017.09.014
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    References listed on IDEAS

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    1. Kyusoo Jeong & Donggon Lee & Sungwook Park & Chang Sik Lee, 2011. "Effect of Two-Stage Fuel Injection Parameters on NO x Reduction Characteristics in a DI Diesel Engine," Energies, MDPI, vol. 4(11), pages 1-12, November.
    2. Huang, Haozhong & Wang, Qingxin & Shi, Cheng & Liu, Qingsheng & Zhou, Chengzhong, 2016. "Comparative study of effects of pilot injection and fuel properties on low temperature combustion in diesel engine under a medium EGR rate," Applied Energy, Elsevier, vol. 179(C), pages 1194-1208.
    3. Park, Su Han & Yoon, Seung Hyun, 2015. "Injection strategy for simultaneous reduction of NOx and soot emissions using two-stage injection in DME fueled engine," Applied Energy, Elsevier, vol. 143(C), pages 262-270.
    4. Berggren, Christian & Magnusson, Thomas, 2012. "Reducing automotive emissions—The potentials of combustion engine technologies and the power of policy," Energy Policy, Elsevier, vol. 41(C), pages 636-643.
    5. Torregrosa, A.J. & Broatch, A. & García, A. & Mónico, L.F., 2013. "Sensitivity of combustion noise and NOx and soot emissions to pilot injection in PCCI Diesel engines," Applied Energy, Elsevier, vol. 104(C), pages 149-157.
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    Cited by:

    1. Doppalapudi, A.T. & Azad, A.K. & Khan, M.M.K., 2021. "Combustion chamber modifications to improve diesel engine performance and reduce emissions: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 152(C).
    2. Deqing Mei & Qisong Yu & Zhengjun Zhang & Shan Yue & Lizhi Tu, 2021. "Effects of Two Pilot Injection on Combustion and Emissions in a PCCI Diesel Engine," Energies, MDPI, vol. 14(6), pages 1-14, March.

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