Investigation of hydrogen emissions in partially premixed diesel combustion

William F. Northrop, Lucas M. Vanderpool, Praveen V. Madathil, Dennis N. Assanis, Stanislav V. Bohac

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Partially premixed combustion strategies offer many advantages for compression ignition engines. One such advantage for engines operating on diesel fuels is the simultaneous reduction of soot and NOx achievable over a wide range of equivalence ratios. Though often not measured in engine experiments, gaseous H2 is a byproduct of incomplete combustion and can be useful for the regeneration of aftertreatment devices. Correlations for the exhaust concentration of H2, 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 pseudo-water gas shift equilibrium constant. In this work, H2 is measured over a range of equivalence ratios in a multi-cylinder 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 H2 over the range of equivalence ratio in LTC for a constant load and combustion phasing. It also was found that the experimental H2 concentration was near the value predicted by the equilibrium constant for equivalence ratios greater that 0.9 but was increasingly lower for leaner points.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME Internal Combustion Engine Division Fall Technical Conference 2009
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages199-206
Number of pages8
ISBN (Print)9780791843635
DOIs
StatePublished - Jan 1 2009
Event2009 ASME Internal Combustion Engine Division Fall Technical Conference, ICEF 2009 - Lucerne, Switzerland
Duration: Sep 27 2009Sep 30 2009

Publication series

NameProceedings of the ASME Internal Combustion Engine Division Fall Technical Conference 2009

Other

Other2009 ASME Internal Combustion Engine Division Fall Technical Conference, ICEF 2009
CountrySwitzerland
CityLucerne
Period9/27/099/30/09

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