University of Hertfordshire

From the same journal

  • Balazs Ihracska
  • Dongsheng Wen
  • Shahid Imran
  • David R. Emberson
  • Lina María Ruiz
  • Roy J. Crookes
  • Theodosios Korakianitis
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Original languageEnglish
Pages (from-to)15452-15468
Number of pages17
JournalInternational Journal of Hydrogen Energy
Publication statusPublished - 22 Nov 2013


The absence of carbon content of hydrogen fuel makes it an attractive candidates for future energy carriers. Hydrogen or dual fuelled engines are a practical alternative to pure hydrocarbon fuelling modes. However, fine tuning of current engines is necessary. In this study premixed hydrogen flame propagation is investigated in a single-cylinder, spark-ignited, four-stroke optically accessible spark ignition test engine using high-speed imaging. Ellipses were fitted on the flame contours during the analysis to obtain flame speeds and flame centre motion. The test conditions covered a range of engine speeds from 1000 rpm to 2000 rpm with 100 rpm increments using a lean mixture, φ = 0.67. The fine temporal resolution allowed the time, at which spark governed kernel formation becomes a function of engine parameters to be determined. The few data that have been published in the literature regarding hydrogen flame speeds were compared with the finding of this study.

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