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Numerical Investigation of the Ignition Delay Time of Kerosene Premixed Combustion in an SI Engine

Author

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  • Yuxuan Zhao

    (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)

  • Enhua Wang

    (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)

  • Zhicheng Shi

    (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)

Abstract

SI engines are installed widely in small aircrafts as they have good fuel economy. Currently, these SI engines are fueled with gasoline, although their safety can be improved if kerosene is used. However, the combustion performance of kerosene cannot fulfil the requirements due to the differences in physicochemical properties. This study investigates the ignition delay time of kerosene at a pressure range of 15–35 bar and a temperature range of 600–1000 K. A detailed chemical reaction mechanism is employed for the premixed combustion process. Under the initial conditions of 1000 K and 35 bar, with an equivalence ratio of 1, the total ignition delay time of kerosene is 0.401 ms. The NTC range of kerosene is determined as roughly 750–920 K. Subsequently, the chemical reaction paths with an equivalence ratio of 0.8, 1, and 1.2 and an initial pressure of 15, 20, and 25 bar were analyzed. The rate-determined elementary reactions were obtained based on a sensitivity analysis. The difference between kerosene and gasoline are also compared, and the rate-determining reactions that affect the ignition of kerosene and gasoline are discussed. The results of this study can provide a reference for the combustion performance improvement and knock suppression of SI engines fueled with kerosene.

Suggested Citation

  • Yuxuan Zhao & Enhua Wang & Zhicheng Shi, 2022. "Numerical Investigation of the Ignition Delay Time of Kerosene Premixed Combustion in an SI Engine," Energies, MDPI, vol. 15(5), pages 1-15, February.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:5:p:1744-:d:759161
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    References listed on IDEAS

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    1. Wang, Chenyao & Zhang, Fujun & Wang, Enhua & Yu, Chuncun & Gao, Hongli & Liu, Bolan & Zhao, Zhenfeng & Zhao, Changlu, 2019. "Experimental study on knock suppression of spark-ignition engine fuelled with kerosene via water injection," Applied Energy, Elsevier, vol. 242(C), pages 248-259.
    2. Yangxun Liu & Weinan Liu & Huihong Liao & Wenhua Zhou & Cangsu Xu, 2021. "An Experimental and Kinetic Modelling Study on Laminar Premixed Flame Characteristics of Ethanol/Acetone Mixtures," Energies, MDPI, vol. 14(20), pages 1-18, October.
    3. Jan Kindracki & Krzysztof Wacko & Przemysław Woźniak & Stanisław Siatkowski & Łukasz Mężyk, 2020. "Influence of Gaseous Hydrogen Addition on Initiation of Rotating Detonation in Liquid Fuel–Air Mixtures," Energies, MDPI, vol. 13(19), pages 1-16, September.
    4. Shi, Zhicheng & Lee, Chia-fon & Wu, Han & Wu, Yang & Zhang, Lu & Liu, Fushui, 2019. "Optical diagnostics of low-temperature ignition and combustion characteristics of diesel/kerosene blends under cold-start conditions," Applied Energy, Elsevier, vol. 251(C), pages 1-1.
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    Cited by:

    1. Yuxuan Zhao & Enhua Wang & Zhicheng Shi, 2023. "Effects of Hydrogen Addition on Premixed Combustion of Kerosene in SI Engine," Energies, MDPI, vol. 16(10), pages 1-18, May.

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