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Study of an innovative three-pole igniter to improve efficiency and stability of gasoline combustion under charge dilution conditions

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  • Han, Xiaoye
  • Yu, Shui
  • Tjong, Jimi
  • Zheng, Ming

Abstract

A diluted cylinder charge helps in engine fuel efficiency but at the same time presents significant challenges to combustion stability. An innovative three-pole spark igniter is researched to explore multi-spot ignition technology and improve the burning process of high-efficiency combustion under diluted conditions. The unique design features three independent pairs of electrodes in a single spark plug and allows new approaches to apply novel ignition strategies. Optical combustion vessels and high-speed imaging techniques are employed to develop fundamental understandings of the multi-spot ignition process. A large number of tests are performed on instrumented combustion vessels to statistically quantify and demonstrate the effect of the three-pole igniter, in comparison with a conventional spark plug. Finally, the prototype three-pole igniter is implemented on a production engine to validate and demonstrate the improvements in engine combustion under low and high dilution conditions. As shown by test results, the three-pole igniter offers shorter ignition delay and faster burning, thereby improving combustion phasing and fuel economy. The three-pole igniter exhibits greater advantages for combustion stability under high dilution conditions that reduce pumping loss and thus gains fuel economy.

Suggested Citation

  • Han, Xiaoye & Yu, Shui & Tjong, Jimi & Zheng, Ming, 2020. "Study of an innovative three-pole igniter to improve efficiency and stability of gasoline combustion under charge dilution conditions," Applied Energy, Elsevier, vol. 257(C).
    • Handle: RePEc:eee:appene:v:257:y:2020:i:c:s0306261919316861
    DOI: 10.1016/j.apenergy.2019.113999
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    References listed on IDEAS

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    1. Galloni, E. & Fontana, G. & Palmaccio, R., 2013. "Effects of exhaust gas recycle in a downsized gasoline engine," Applied Energy, Elsevier, vol. 105(C), pages 99-107.
    2. Wei, Haiqiao & Zhu, Tianyu & Shu, Gequn & Tan, Linlin & Wang, Yuesen, 2012. "Gasoline engine exhaust gas recirculation – A review," Applied Energy, Elsevier, vol. 99(C), pages 534-544.
    3. Bonatesta, F. & Altamore, G. & Kalsi, J. & Cary, M., 2016. "Fuel economy analysis of part-load variable camshaft timing strategies in two modern small-capacity spark ignition engines," Applied Energy, Elsevier, vol. 164(C), pages 475-491.
    4. Morsy, Mohamed H., 2012. "Review and recent developments of laser ignition for internal combustion engines applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(7), pages 4849-4875.
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    1. Yuji Ikeda & Nobuyuki Kawahara, 2022. "Measurement of Cyclic Variation of the Air-to-Fuel Ratio of Exhaust Gas in an SI Engine by Laser-Induced Breakdown Spectroscopy," Energies, MDPI, vol. 15(9), pages 1-14, April.

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