The simultaneous reduction in engine-out NOx and soot emissions with diesel low temperature combustion (LTC) is generally accompanied by high levels of hydrocarbon (THC) and carbon monoxide (CO) emissions in the exhaust. To achieve clean diesel combustion in terms of low regulated emissions (NOx, soot, THC, and CO), the exhaust combustibles must be dealt with the exhaust aftertreatment (typically a diesel oxidation catalyst). In this work, engine tests were performed to realize LTC on a single-cylinder common-rail diesel engine up to 12 bar IMEP. A single-shot fuel injection strategy was employed to push the diesel cycles into LTC with exhaust gas recirculation (EGR). The combustibles in the exhaust were generally found to increase with the LTC load and were observed to be a function of the overall equivalence ratio. A Fourier transform infrared (FTIR) spectroscopy analysis of light hydrocarbon emissions found methane to constitute a significant component of the hydrocarbon emissions under the tested LTC conditions. The relative fraction of individual species in the hydrocarbons also changed, indicating a richer combustion zone and a reduction in engine-out THC reactivity. The hydrogen production was found to correlate consistently with the CO emissions, largely independent of the boost pressure or engine load under the tested LTC conditions. This research intends to identify the major constituents of the THC emissions and highlight the possible impact on exhaust aftertreatment.
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ASME 2011 Internal Combustion Engine Division Fall Technical Conference
October 2–5, 2011
Morgantown, West Virginia, USA
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
978-0-7918-4442-7
PROCEEDINGS PAPER
Speciation Analysis of Light Hydrocarbons and Hydrogen Production During Diesel Low Temperature Combustion Available to Purchase
Usman Asad,
Usman Asad
University of Windsor, Windsor, ON, Canada
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Arturo Mendoza,
Arturo Mendoza
University of Windsor, Windsor, ON, Canada
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Kelvin Xie,
Kelvin Xie
University of Windsor, Windsor, ON, Canada
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Marko Jeftic,
Marko Jeftic
University of Windsor, Windsor, ON, Canada
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Meiping Wang,
Meiping Wang
University of Windsor, Windsor, ON, Canada
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Ming Zheng
Ming Zheng
University of Windsor, Windsor, ON, Canada
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Usman Asad
University of Windsor, Windsor, ON, Canada
Arturo Mendoza
University of Windsor, Windsor, ON, Canada
Kelvin Xie
University of Windsor, Windsor, ON, Canada
Marko Jeftic
University of Windsor, Windsor, ON, Canada
Meiping Wang
University of Windsor, Windsor, ON, Canada
Ming Zheng
University of Windsor, Windsor, ON, Canada
Paper No:
ICEF2011-60130, pp. 451-460; 10 pages
Published Online:
February 3, 2012
Citation
Asad, U, Mendoza, A, Xie, K, Jeftic, M, Wang, M, & Zheng, M. "Speciation Analysis of Light Hydrocarbons and Hydrogen Production During Diesel Low Temperature Combustion." Proceedings of the ASME 2011 Internal Combustion Engine Division Fall Technical Conference. ASME 2011 Internal Combustion Engine Division Fall Technical Conference. Morgantown, West Virginia, USA. October 2–5, 2011. pp. 451-460. ASME. https://doi.org/10.1115/ICEF2011-60130
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