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Phi-T map analysis on RCCI engine fueled by methanol and biodiesel

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  • Wenming, Yang
  • Meng, Yang

Abstract

In this work, a 3-dimensional numerical platform coupled with skeletal chemical reaction mechanism is employed to investigate the impact of various operating conditions on the performance and emissions of a RCCI engine fueled with biodiesel and methanol. Especially, a φ-T map was employed to investigate the methanol percentage on the performance of the engine. The results indicated that the groups of cells distributed at high ER (above 2.0) decrease as methanol percentage increases. When the engine is operating at full load conditions, compared to pure biodiesel, the IMEP of the RCCI engine with 60% methanol increases by 10.2%, soot emissions significantly drops by 75%, but the NOx emissions increases by 12.3%. This is because the increase of methanol percentage creates a better mixing between the fuel and air and resulting in a faster and more homogeneous combustion process. However, when the engine is operating at 10% load conditions, with the increase of methanol percentage, the combustion will be deteriorated. For extreme case, when methanol percentage increases to 80%, misfire takes place in the engine due to its significant higher latent heat and specific heat of the methanol.

Suggested Citation

  • Wenming, Yang & Meng, Yang, 2019. "Phi-T map analysis on RCCI engine fueled by methanol and biodiesel," Energy, Elsevier, vol. 187(C).
    • Handle: RePEc:eee:energy:v:187:y:2019:i:c:s0360544219316482
    DOI: 10.1016/j.energy.2019.115958
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    References listed on IDEAS

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    1. Li, Jing & Ling, Xiang & Liu, Deng & Yang, Wenming & Zhou, Dezhi, 2018. "Numerical study on double injection techniques in a gasoline and biodiesel fueled RCCI (reactivity controlled compression ignition) engine," Applied Energy, Elsevier, vol. 211(C), pages 382-392.
    2. Zhijun Peng & Bin Liu & Weiji Wang & Lipeng Lu, 2011. "CFD Investigation into Diesel PCCI Combustion with Optimized Fuel Injection," Energies, MDPI, vol. 4(3), pages 1-15, March.
    3. Gharehghani, Ayatallah & Hosseini, Reza & Mirsalim, Mostafa & Jazayeri, S. Ali & Yusaf, Talal, 2015. "An experimental study on reactivity controlled compression ignition engine fueled with biodiesel/natural gas," Energy, Elsevier, vol. 89(C), pages 558-567.
    4. Li, Yaopeng & Jia, Ming & Liu, Yaodong & Xie, Maozhao, 2013. "Numerical study on the combustion and emission characteristics of a methanol/diesel reactivity controlled compression ignition (RCCI) engine," Applied Energy, Elsevier, vol. 106(C), pages 184-197.
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    1. Kakati, Dipankar & Biswas, Srijit & Banerjee, Rahul, 2021. "Parametric sensitivity analysis of split injection coupled varying methanol induced reactivity strategies on the exergy efficiency enhancement and emission reductions objectives in a biodiesel fuelled," Energy, Elsevier, vol. 225(C).
    2. Solmaz, Hamit & Safieddin Ardebili, Seyed Mohammad & Aksoy, Fatih & Calam, Alper & Yılmaz, Emre & Arslan, Muhammed, 2020. "Optimization of the operating conditions of a beta-type rhombic drive stirling engine by using response surface method," Energy, Elsevier, vol. 198(C).

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