Partially premixed combustion strategies offer many advantages for compression ignition engines. One such advantage for those operating on diesel fuels is the simultaneous reduction in soot and achievable over a wide range of equivalence ratios. Though often not measured in engine experiments, gaseous is a byproduct of incomplete combustion and can be useful for the regeneration of aftertreatment devices. Correlations for the exhaust concentration of , mostly derived from experiments with homogeneous spark ignition engines, indicate that it is emitted either in proportion to CO directly or as a function of a pseudowater gas shift equilibrium constant. In this work, is measured over a range of equivalence ratios in a multicylinder diesel engine operating in a partially premixed low temperature combustion (LTC) mode using both low sulfur diesel fuel and soy-based biodiesel. Biodiesel was found to have the same bulk gas emissions of major species including over the range of equivalence ratio in LTC for a constant load and combustion phasing. It also was found that the experimental concentration was near the value predicted by the equilibrium constant for equivalence ratios greater that 0.85 but was increasingly lower for leaner points.
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November 2010
Research Papers
Investigation of Hydrogen Emissions in Partially Premixed Diesel Combustion
William F. Northrop,
William F. Northrop
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109
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Lucas M. Vanderpool,
Lucas M. Vanderpool
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109
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Praveen V. Madathil,
Praveen V. Madathil
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109
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Dennis N. Assanis,
Dennis N. Assanis
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109
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Stanislav V. Bohac
Stanislav V. Bohac
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109
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William F. Northrop
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109
Lucas M. Vanderpool
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109
Praveen V. Madathil
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109
Dennis N. Assanis
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109
Stanislav V. Bohac
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109J. Eng. Gas Turbines Power. Nov 2010, 132(11): 112803 (6 pages)
Published Online: August 16, 2010
Article history
Received:
September 23, 2009
Revised:
October 6, 2009
Online:
August 16, 2010
Published:
August 16, 2010
Citation
Northrop, W. F., Vanderpool, L. M., Madathil, P. V., Assanis, D. N., and Bohac, S. V. (August 16, 2010). "Investigation of Hydrogen Emissions in Partially Premixed Diesel Combustion." ASME. J. Eng. Gas Turbines Power. November 2010; 132(11): 112803. https://doi.org/10.1115/1.4001069
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