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Influence of the Port Height to Stroke Ratio on the Performance of an OP2S Engine Fueled with Methanol/Diesel

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  • Wei Yang

    (School of Energy and Power Engineering, North University of China, University Road No.3, Taiyuan 030051, China)

  • Feng Li

    (School of Energy and Power Engineering, North University of China, University Road No.3, Taiyuan 030051, China)

  • Fukang Ma

    (School of Energy and Power Engineering, North University of China, University Road No.3, Taiyuan 030051, China)

  • Dan Xu

    (China North Engine Research Institute (Tianjin), Tianjin 300400, China)

  • Junfeng Xu

    (School of Energy and Power Engineering, North University of China, University Road No.3, Taiyuan 030051, China)

  • Fang Wang

    (Shanxi Diesel Engine Industry Corporation, Ltd., Datong 037036, China)

Abstract

Zero carbon emission is a mainstream trend in the development of internal combustion engines (ICEs) in the future. ICEs need to constantly surpass the existing working mechanism, especially in order to explore the possibility of new combustion methods. Dual-fuel combustion is a good way to reduce carbon emissions and achieve clean combustion. However, the traditional internal combustion engine is limited by its own structure, restricting its performance improvement. The opposed-piston, two-stroke (OP2S) diesel engine is a potential power system with a high degree of structural adjustability. Therefore, this work attempted to apply methanol/diesel dual-fuel to OP2S engines in order to explore efficient and clean combustion modes in the future. In this work, a one-dimensional simulation model of an OP2S diesel engine was established and verified. The effect of the port height to stroke ratio on the performance of the OP2S diesel engine was mainly studied for different methanol blending ratios. The results show that the methanol blending ratio does not affect the port height to stroke ratio where the optimal values of the MIP and scavenging efficiency appear. The optimal methanol blending ratio for the power performance of OP2S diesel engines is 5~15%. There is a trade-off relationship between the MIP/scavenging efficiency and trapping efficiency. For the optimization of an OP2S methanol–diesel engine, priority should be given to ensuring an optimal MIP and scavenging efficiency, and then to the appropriate consideration of the trapping efficiency.

Suggested Citation

  • Wei Yang & Feng Li & Fukang Ma & Dan Xu & Junfeng Xu & Fang Wang, 2022. "Influence of the Port Height to Stroke Ratio on the Performance of an OP2S Engine Fueled with Methanol/Diesel," Energies, MDPI, vol. 15(6), pages 1-12, March.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:6:p:2186-:d:772973
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    References listed on IDEAS

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    1. Fukang Ma & Shuanlu Zhang & Zhenfeng Zhao & Yifang Wang, 2021. "Research on the Operating Characteristics of Hydraulic Free-Piston Engines: A Systematic Review and Meta-Analysis," Energies, MDPI, vol. 14(12), pages 1-23, June.
    2. Sayin, Cenk & Ilhan, Murat & Canakci, Mustafa & Gumus, Metin, 2009. "Effect of injection timing on the exhaust emissions of a diesel engine using diesel–methanol blends," Renewable Energy, Elsevier, vol. 34(5), pages 1261-1269.
    3. Fukang Ma & Wei Yang & Junfeng Xu & Yufeng Li & Zhenfeng Zhao & Zhenyu Zhang & Yifang Wang, 2021. "Experimental Investigation of Combustion Characteristics on Opposed Piston Two-Stroke Gasoline Direct Injection Engine," Energies, MDPI, vol. 14(8), pages 1-23, April.
    4. Su, Li-Wang & Li, Xiang-Rong & Sun, Zuo-Yu, 2013. "The consumption, production and transportation of methanol in China: A review," Energy Policy, Elsevier, vol. 63(C), pages 130-138.
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