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Effect of Temperature Conditions on Flame Evolutions of Turbulent Jet Ignition

Author

Listed:
  • Jiaying Pan

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Yu He

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Tao Li

    (Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China)

  • Haiqiao Wei

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Lei Wang

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Gequn Shu

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

Abstract

Turbulent jet ignition technology can significantly improve lean combustion stability and suppress engine knocking. However, the narrow jet channel between the pre-chamber and the main chamber leads to some difficulties in heat exchange, which significantly affects combustion performance and mechanical component lifetime. To clarify the effect of temperature conditions on combustion evolutions of turbulent jet ignition, direct numerical simulations with detailed chemical kinetics were employed under engine-relevant conditions. The flame propagation in the pre-chamber and the early-stage turbulent jet ignition in the main chamber were investigated. The results show that depending on temperature conditions, two types of flame configuration can be identified in the main chamber, i.e., the normal turbulent jet flame propagation and the spherical flame propagation, and the latter is closely associated with pressure wave disturbance. Under low-temperature conditions, the cold jet stoichiometric mixtures and the vortexes induced by the jet flow determine the early-stage flame development in the main chamber. Under intermediate temperature conditions, pre-flame heat release and leading pressure waves are induced in the jet channel, which can be regarded as a transition of different combustion modes. Whereas under high-temperature conditions, irregular auto-ignition events start to occur, and spherical flame fronts are induced in the main chamber, behaving faster flame propagation.

Suggested Citation

  • Jiaying Pan & Yu He & Tao Li & Haiqiao Wei & Lei Wang & Gequn Shu, 2021. "Effect of Temperature Conditions on Flame Evolutions of Turbulent Jet Ignition," Energies, MDPI, vol. 14(8), pages 1-17, April.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:8:p:2226-:d:537427
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    References listed on IDEAS

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    1. Rafał Ślefarski & Michał Gołębiewski & Paweł Czyżewski & Przemysław Grzymisławski & Jacek Wawrzyniak, 2018. "Analysis of Combustion Process in Industrial Gas Engine with Prechamber-Based Ignition System," Energies, MDPI, vol. 11(2), pages 1-15, February.
    2. Hua Tian & Jingchen Cui & Tianhao Yang & Yao Fu & Jiangping Tian & Wuqiang Long, 2019. "Experimental Research on Controllability and Emissions of Jet-Controlled Compression Ignition Engine," Energies, MDPI, vol. 12(15), pages 1-14, July.
    3. Nyamsuren Gombosuren & Ogami Yoshifumi & Asada Hiroyuki, 2020. "A Charge Possibility of an Unfueled Prechamber and Its Fluctuating Phenomenon for the Spark Ignited Engine," Energies, MDPI, vol. 13(2), pages 1-17, January.
    4. Alfredas Rimkus & Justas Žaglinskis & Saulius Stravinskas & Paulius Rapalis & Jonas Matijošius & Ákos Bereczky, 2019. "Research on the Combustion, Energy and Emission Parameters of Various Concentration Blends of Hydrotreated Vegetable Oil Biofuel and Diesel Fuel in a Compression-Ignition Engine," Energies, MDPI, vol. 12(15), pages 1-18, August.
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    Cited by:

    1. Viktor Dilber & Momir Sjerić & Rudolf Tomić & Josip Krajnović & Sara Ugrinić & Darko Kozarac, 2022. "Optimization of Pre-Chamber Geometry and Operating Parameters in a Turbulent Jet Ignition Engine," Energies, MDPI, vol. 15(13), pages 1-21, June.
    2. Rudolf Tomić & Momir Sjerić & Josip Krajnović & Sara Ugrinić, 2023. "Influence of Pre-Chamber Volume, Orifice Diameter and Orifice Number on Performance of Pre-Chamber SI Engine—An Experimental and Numerical Study," Energies, MDPI, vol. 16(6), pages 1-19, March.
    3. Lina Xu & Gang Li & Mingfa Yao & Zunqing Zheng & Hu Wang, 2022. "Numerical Investigation on the Jet Characteristics and Combustion Process of an Active Prechamber Combustion System Fueled with Natural Gas," Energies, MDPI, vol. 15(15), pages 1-16, July.

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