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Effect of Premixed n-Butanol Ratio on the Initial Stage of Combustion in a Light-Duty Butanol/Diesel Dual-Fuel Engine

Author

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  • Wei Tian

    (Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China)

  • Hongchuan Zhang

    (Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China)

  • Lenian Wang

    (Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China)

  • Zhiqiang Han

    (Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China)

  • Wenbin Yu

    (Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore)

Abstract

The impact of premixed n-butanol mixture on the heat release rate was investigated based on a modified light-duty diesel engine. The results show that reactivity stratification is formed in the cylinder through n-butanol port fuel injection (PFI) and diesel direct injection (DI). The initial heat release rate of the diesel/butanol dual-fuel combustion is restrained due to the low ignitability of butanol and the high volatility. Because of the auto-ignition of diesel, premixed n-butanol undergoes a high-temperature reaction, which has an active influence on the heat releasing of diesel/butanol dual-fuel combustion. With the increase of the amount of premixed n-butanol injected, the heat release rate in the initial combustion period has a critical value. When the n-butanol injection quantity is less than 13 mg/cycle, the initial heat release rate of dual-fuel combustion is lower than the pure diesel combustion because the lean premixed n-butanol/air mixture limits the flame propagation. When the fuel injection rate of n-butanol is higher than 13 mg/cycle, the heat release rate is accelerated, leading to obvious flame propagation.

Suggested Citation

  • Wei Tian & Hongchuan Zhang & Lenian Wang & Zhiqiang Han & Wenbin Yu, 2020. "Effect of Premixed n-Butanol Ratio on the Initial Stage of Combustion in a Light-Duty Butanol/Diesel Dual-Fuel Engine," Energies, MDPI, vol. 13(17), pages 1-10, August.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:17:p:4295-:d:401210
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    References listed on IDEAS

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    Cited by:

    1. Ao Zhou & Hui Jin & Wenhan Cao & Ming Pang & Yangyang Li & Chao Zhu, 2022. "Influence of Pilot Injection on Combustion Characteristic of Methanol–Diesel Dual-Fuel Engine," Energies, MDPI, vol. 15(10), pages 1-14, May.
    2. 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).
    3. Deng, Xiaorong & Li, Jing & Liang, Yifei & Yang, Wenming, 2023. "Dual-fuel engines fueled with n-butanol/n-octanol and n-butanol/DNBE: A comparative study of combustion and emissions characteristics," Energy, Elsevier, vol. 263(PC).
    4. Arkadiusz Jamrozik & Wojciech Tutak & Karol Grab-Rogaliński, 2021. "Combustion Stability, Performance and Emission Characteristics of a CI Engine Fueled with Diesel/n-Butanol Blends," Energies, MDPI, vol. 14(10), pages 1-20, May.

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