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A numerical investigation on the injection timing of boot injection rate-shapes in a kerosene-diesel engine with a clustered dynamic adaptive chemistry method

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Listed:
  • Zhou, Dezhi
  • Tay, Kun Lin
  • Tu, Yaojie
  • Li, Jing
  • Yang, Wenming
  • Zhao, Dan

Abstract

In this study, we conducted a numerical investigation on the effect of injection timing of boot injection rate shape on the combustion and emission characteristics in a direct injection compression ignition (DICI) engine fueled with kerosene/diesel blending. Considering the complex surrogate in kerosene chemical mechanisms and the huge computational workload in multi-dimensional engine simulations, we employed a clustered dynamic adaptive chemistry method (CDAC) to accelerate the chemistry integration process. This study firstly specified the user-defined parameters in this CDAC method by sensitivity analysis in a HCCI and DICI engine with different user-defined parameter combinations. With these specified parameters, CDAC is then validated by comparing its predicted in-cylinder pressure with the full chemistry ones. It is found that the current CDAC method could reduce the computational time by more than 60% compared with the full chemistry CPU time. CDAC, subsequently, is used to conduct the numerical investigation on the injection timing of boot injection rate shapes. Four different boot injection rate shapes are simulated and compared with the normal rectangular injection. The effect injection timing of the boot injection rate on the engine performance and combustion/emission characteristic is then analyzed in detail. It is found that the change of start of injection (SOI) in boot injection has little influence of the ignition delay in the DICI engine fuelled with diesel and kerosene blending due to the high cetane number of diesel and better volatility of kerosene. In addition, with kerosene addition into the diesel combustion, it is observed that the CO emission could be reduced at all the varied SOI.

Suggested Citation

  • Zhou, Dezhi & Tay, Kun Lin & Tu, Yaojie & Li, Jing & Yang, Wenming & Zhao, Dan, 2018. "A numerical investigation on the injection timing of boot injection rate-shapes in a kerosene-diesel engine with a clustered dynamic adaptive chemistry method," Applied Energy, Elsevier, vol. 220(C), pages 117-126.
    • Handle: RePEc:eee:appene:v:220:y:2018:i:c:p:117-126
    DOI: 10.1016/j.apenergy.2018.03.055
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    References listed on IDEAS

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    1. Lee, Jeongwoo & Lee, Jungyeon & Chu, Sanghyun & Choi, Hoimyung & Min, Kyoungdoug, 2015. "Emission reduction potential in a light-duty diesel engine fueled by JP-8," Energy, Elsevier, vol. 89(C), pages 92-99.
    2. Kalligeros, S & Zannikos, F & Stournas, S & Lois, E, 2003. "Fuel adulteration issues in Greece," Energy, Elsevier, vol. 28(1), pages 15-26.
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    Cited by:

    1. Zhu, Jizhen & Zhou, Dezhi & Yang, Wenming & Qian, Yong & Mao, Yebing & Lu, Xingcai, 2023. "Investigation on the potential of using carbon-free ammonia in large two-stroke marine engines by dual-fuel combustion strategy," Energy, Elsevier, vol. 263(PB).
    2. Rafael Estevez & Francisco J. López-Tenllado & Laura Aguado-Deblas & Felipa M. Bautista & Antonio A. Romero & Diego Luna, 2023. "Current Research on Green Ammonia (NH 3 ) as a Potential Vector Energy for Power Storage and Engine Fuels: A Review," Energies, MDPI, vol. 16(14), pages 1-33, July.
    3. Li, Jiangtao & Zhang, Zhiqing & Ye, Yanshuai & Li, Weiqing & Yuan, Tao & Wang, Haijiao & Li, Yongtao & Tan, Dongli & Zhang, Chengtao, 2022. "Effects of different injection timing on the performance, combustion and emission characteristics of diesel/ethanol/n-butanol blended diesel engine based on multi-objective optimization theory," Energy, Elsevier, vol. 260(C).
    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.
    5. Zhang, Zhiqing & Li, Jiangtao & Tian, Jie & Dong, Rui & Zou, Zhi & Gao, Sheng & Tan, Dongli, 2022. "Performance, combustion and emission characteristics investigations on a diesel engine fueled with diesel/ ethanol /n-butanol blends," Energy, Elsevier, vol. 249(C).

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