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The Influence of Hydrogen on Vaporization, Mixture Formation and Combustion of Diesel Fuel at an Automotive Diesel Engine

Author

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  • Alexandru Cernat

    (Department of Thermotechnics, Engines, Thermal and Frigorific Equipment, University Politehnica of Bucharest, 060042 București, Romania)

  • Constantin Pana

    (Department of Thermotechnics, Engines, Thermal and Frigorific Equipment, University Politehnica of Bucharest, 060042 București, Romania)

  • Niculae Negurescu

    (Department of Thermotechnics, Engines, Thermal and Frigorific Equipment, University Politehnica of Bucharest, 060042 București, Romania)

  • Gheorghe Lazaroiu

    (Department of Energy Generation and Use, University Politehnica of Bucharest, 060042 București, Romania)

  • Cristian Nutu

    (Department of Thermotechnics, Engines, Thermal and Frigorific Equipment, University Politehnica of Bucharest, 060042 București, Romania)

Abstract

Hydrogen can be a viable alternative fuel for modern diesel engines, offering benefits on efficiency and performance improvement. The paper analyses the results of a thermodynamic model developed by authors in order to study the influence of Hydrogen addition on a process like vaporization, mixture forming, and combustion at the level of diesel fuel droplets. The bi-zonal model is applied for a dual-fueled diesel engine K9K type designed by Renault for automotives. For the engine operating regime of 2000 rpm speed and 55% engine load, the diesel fuel is partially substituted by Hydrogen in energetic percents of 6.76%, 13.39%, and 20.97%, the engine power being maintained at the same level comparative to classic fueling. At Hydrogen addition, the diesel fuel jets atomization and diesel fuel droplets vaporization are accelerated, the speed of formation of the mixture being increased. Comparative to classic fueling, the use of Hydrogen leads to diesel droplets combustion intensification, with a shortened autoignition delay, reduction of combustion duration, and increase of flame radius.

Suggested Citation

  • Alexandru Cernat & Constantin Pana & Niculae Negurescu & Gheorghe Lazaroiu & Cristian Nutu, 2020. "The Influence of Hydrogen on Vaporization, Mixture Formation and Combustion of Diesel Fuel at an Automotive Diesel Engine," Sustainability, MDPI, vol. 13(1), pages 1-16, December.
    • Handle: RePEc:gam:jsusta:v:13:y:2020:i:1:p:202-:d:469396
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    References listed on IDEAS

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    1. Alexandru Cernat & Constantin Pana & Niculae Negurescu & Gheorghe Lazaroiu & Cristian Nutu & Dinu Fuiorescu, 2020. "Hydrogen—An Alternative Fuel for Automotive Diesel Engines Used in Transportation," Sustainability, MDPI, vol. 12(22), pages 1-21, November.
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    Cited by:

    1. Jia, Hekun & Jian, Yi & Yin, Bifeng & Yang, Junfeng & Liu, Zhiyuan, 2023. "Experimental study on the combustion, emissions and fuel consumption of elliptical nozzle diesel engine," Energy, Elsevier, vol. 262(PB).
    2. Yontar, Ahmet Alper & Sofuoğlu, Duygu & Değirmenci, Hüseyin & Ayaz, Tahir & Üstün, Deniz, 2023. "Investigation of combustion characteristics on triethyl borate, trimethyl borate, diesel, and gasoline droplets," Energy, Elsevier, vol. 266(C).
    3. Gintautas Miliauskas & Egidijus Puida & Robertas Poškas & Povilas Poškas, 2021. "The Influence of Droplet Dispersity on Droplet Vaporization in the High-Temperature Wet Gas Flow in the Case of Combined Heating," Sustainability, MDPI, vol. 13(7), pages 1-24, March.

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