Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7721317 | International Journal of Hydrogen Energy | 2013 | 17 Pages |
Abstract
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 1000Â rpm to 2000Â rpm with 100Â rpm increments using a lean mixture, ÏÂ =Â 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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Authors
Balazs Ihracska, Dongsheng Wen, Shahid Imran, David R. Emberson, Lina MarÃa Ruiz, Roy J. Crookes, Theodosios Korakianitis,