Charge dilution, due to the reduced combustion temperatures that it brings about, has long been proven as effective means of reducing Nitrogen Oxides (NOx) emissions in reciprocating engines. The extent of this dilution is practically bounded on the lean side of stoichiometric conditions by engine misfire or the point at which the combustion process is no longer sufficiently reliable to sustain engine operation within some specified limit. Extending this misfire limit of an engine becomes a worth while goal as it brings about further reductions in NOx emissions. Much work has been dedicated to reaching this end and several techniques have proven viable in natural gas fueled engines. This work explores potential synergies between two proven techniques for NOx reductions in lean-burn natural gas fueled engines, hydrogen enrichment of the natural gas fuel and application of laser spark ignition. Independently both techniques have been shown to provide significant NOx emissions reductions through lean limit extension in spark ignited gaseous fueled reciprocating engines [1–11, 13–15]. Here hydrogen is blended with natural gas at five different levels ranging from 0% to 40% by volume in a single cylinder engine. The mixtures are fired using a conventional spark plug based ignition system and then again with an open beam path laser induced breakdown spark ignition system. NOx emissions measurements were made at different levels including misfire conditions for each level of hydrogen enrichment with both ignition systems. Data are presented and the emissions and engine performance of two configurations are compared to determine realizable benefits that arise from combining the two techniques.
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ASME 2006 Internal Combustion Engine Division Spring Technical Conference
May 7–10, 2006
Aachen, Germany
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
0-7918-4206-1
PROCEEDINGS PAPER
Laser Spark Ignition of a Blended Hydrogen-Natural Gas Fueled Single Cylinder Engine
Steven W. Richardson,
Steven W. Richardson
National Energy Technology Laboratory, Morgantown, WV
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Michael H. McMillian,
Michael H. McMillian
National Energy Technology Laboratory, Morgantown, WV
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Steven D. Woodruff,
Steven D. Woodruff
National Energy Technology Laboratory, Morgantown, WV
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Todd Worstell,
Todd Worstell
Parsons Infrastructure and Technology
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Dustin L. McIntyre
Dustin L. McIntyre
National Energy Technology Laboratory, Morgantown, WV
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Steven W. Richardson
National Energy Technology Laboratory, Morgantown, WV
Michael H. McMillian
National Energy Technology Laboratory, Morgantown, WV
Steven D. Woodruff
National Energy Technology Laboratory, Morgantown, WV
Todd Worstell
Parsons Infrastructure and Technology
Dustin L. McIntyre
National Energy Technology Laboratory, Morgantown, WV
Paper No:
ICES2006-1397, pp. 411-419; 9 pages
Published Online:
September 10, 2008
Citation
Richardson, SW, McMillian, MH, Woodruff, SD, Worstell, T, & McIntyre, DL. "Laser Spark Ignition of a Blended Hydrogen-Natural Gas Fueled Single Cylinder Engine." Proceedings of the ASME 2006 Internal Combustion Engine Division Spring Technical Conference. ASME 2006 Internal Combustion Engine Division Spring Technical Conference (ICES2006). Aachen, Germany. May 7–10, 2006. pp. 411-419. ASME. https://doi.org/10.1115/ICES2006-1397
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