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Numerical investigation on the effects of injection rate shaping on combustion and emission characteristics of biodiesel fueled CI engine

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  • Mohan, Balaji
  • Yang, Wenming
  • Yu, Wenbin
  • Tay, Kun Lin
  • Chou, Siaw Kiang

Abstract

Varying fuel injection strategies is one of the promising methods to reduce engine out emissions and improve its performance as injection characteristics have great influences on combustion process. Out of various injection strategies, injection rate shaping is potentially an effective technique to reduce emission from engines. Injection rate shaping helps in reducing NOx emissions and reduces combustion noise. This work investigates the effect of injection rate shaping on combustion and emission characteristics of a direct injection diesel engine fueled by biodiesel. The CFD simulations were performed using multi-dimensional KIVA-4 code coupled with CHEMKIN chemistry solver. A detailed chemical kinetics of methyl decanoate (MD) and methyl-9-decenoate (MD9D) with 112 species and 498 reactions were used as surrogate fuel for biodiesel. The injection rate shapes were varied in terms of boot length (long, medium and short boot length) and boot pressure (low, medium and high boot pressure) and it was found from the results that a trade-off between NOx and soot emissions were obtained for long boot length, and high boot pressure injection rate profiles.

Suggested Citation

  • Mohan, Balaji & Yang, Wenming & Yu, Wenbin & Tay, Kun Lin & Chou, Siaw Kiang, 2015. "Numerical investigation on the effects of injection rate shaping on combustion and emission characteristics of biodiesel fueled CI engine," Applied Energy, Elsevier, vol. 160(C), pages 737-745.
    • Handle: RePEc:eee:appene:v:160:y:2015:i:c:p:737-745
    DOI: 10.1016/j.apenergy.2015.08.034
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    1. An, Hui & Yang, Wenming & Li, Jing & Maghbouli, Amin & Chua, Kian Jon & Chou, Siaw Kiang, 2014. "A numerical modeling on the emission characteristics of a diesel engine fueled by diesel and biodiesel blend fuels," Applied Energy, Elsevier, vol. 130(C), pages 458-465.
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    4. An, H. & Yang, W.M. & Maghbouli, A. & Chou, S.K. & Chua, K.J., 2013. "Detailed physical properties prediction of pure methyl esters for biodiesel combustion modeling," Applied Energy, Elsevier, vol. 102(C), pages 647-656.
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    2. Motlagh, Tara Yazdani & Azadani, Leila N. & Yazdani, Kaveh, 2020. "Multi-objective optimization of diesel injection parameters in a natural gas/diesel reactivity controlled compression ignition engine," Applied Energy, Elsevier, vol. 279(C).
    3. Ma, Yinjie & Huang, Ronghua & Fu, Jianqin & Huang, Sheng & Liu, Jingping, 2018. "Development of a diesel/biodiesel/alcohol (up to n-pentanol) combined mechanism based on reaction pathways analysis methodology," Applied Energy, Elsevier, vol. 225(C), pages 835-847.
    4. Intarat Naruemon & Long Liu & Qihao Mei & Xiuzhen Ma, 2019. "Investigation on an Injection Strategy Optimization for Diesel Engines Using a One-Dimensional Spray Model," Energies, MDPI, vol. 12(21), pages 1-19, November.
    5. Liu, Yu & Yuan, Zhipeng & Ma, Yinjie & Fu, Jianqin & Huang, Ronghua & Liu, Jingping, 2019. "Analysis of spray combustion characteristics of diesel, biodiesel and their n-pentanol blends based on a one-dimensional semi-phenomenological model," Applied Energy, Elsevier, vol. 238(C), pages 996-1009.
    6. Asgari, Behrad & Amani, Ehsan, 2017. "A multi-objective CFD optimization of liquid fuel spray injection in dry-low-emission gas-turbine combustors," Applied Energy, Elsevier, vol. 203(C), pages 696-710.
    7. Jingrui Li & Jietuo Wang & Teng Liu & Jingjin Dong & Bo Liu & Chaohui Wu & Ying Ye & Hu Wang & Haifeng Liu, 2019. "An Investigation of the Influence of Gas Injection Rate Shape on High-Pressure Direct-Injection Natural Gas Marine Engines," Energies, MDPI, vol. 12(13), pages 1-18, July.
    8. Tyler Simpson & Christopher Depcik, 2022. "Multiple Fuel Injection Strategies for Compression Ignition Engines," Energies, MDPI, vol. 15(14), pages 1-29, July.
    9. Doppalapudi, A.T. & Azad, A.K. & Khan, M.M.K., 2023. "Advanced strategies to reduce harmful nitrogen-oxide emissions from biodiesel fueled engine," Renewable and Sustainable Energy Reviews, Elsevier, vol. 174(C).

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