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Determining Pilot Ignition Delay in Dual-Fuel Medium-Speed Marine Engines Using Methanol or Hydrogen

Author

Listed:
  • Somayeh Parsa

    (Department of Electromechanical, Systems and Metal Engineering, Ghent University, Sint-Pietersnieuwstraat 41, 9000 Ghent, Belgium)

  • Sebastian Verhelst

    (Department of Electromechanical, Systems and Metal Engineering, Ghent University, Sint-Pietersnieuwstraat 41, 9000 Ghent, Belgium
    Department of Energy Sciences, Lund University, Ole Römers väg 1, P.O. Box 118, SE-221 00 Lund, Sweden)

Abstract

Dual-fuel engines are a way of transitioning the marine sector to carbon-neutral fuels like hydrogen and methanol. For the development of these engines, accurate simulation of the combustion process is needed, for which calculating the pilot’s ignition delay is essential. The present work investigates novel methodologies for calculating this. This involves the use of chemical kinetic schemes to compute the ignition delay for various operating conditions. Machine learning techniques are used to train models on these data sets. A neural network model is then implemented in a dual-fuel combustion model to calculate the ignition delay time and is compared using a lookup table or a correlation. The numerical results are compared with experimental data from a dual-fuel medium-speed marine engine operating with hydrogen or methanol, from which the method with best accuracy and fastest calculation is selected.

Suggested Citation

  • Somayeh Parsa & Sebastian Verhelst, 2025. "Determining Pilot Ignition Delay in Dual-Fuel Medium-Speed Marine Engines Using Methanol or Hydrogen," Energies, MDPI, vol. 18(12), pages 1-18, June.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:12:p:3064-:d:1675599
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    References listed on IDEAS

    as
    1. Saravanan, N. & Nagarajan, G., 2010. "Performance and emission studies on port injection of hydrogen with varied flow rates with Diesel as an ignition source," Applied Energy, Elsevier, vol. 87(7), pages 2218-2229, July.
    2. Fayaz, H. & Saidur, R. & Razali, N. & Anuar, F.S. & Saleman, A.R. & Islam, M.R., 2012. "An overview of hydrogen as a vehicle fuel," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(8), pages 5511-5528.
    3. Liu, Shuqi & Sun, Ting & Zhou, Lei & Jia, Ming & Zhao, Wanhui & Wei, Haiqiao, 2023. "A new skeletal kinetic model for methanol/ n-heptane dual fuels under engine-like conditions," Energy, Elsevier, vol. 263(PB).
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