An experimental study on the effect of hydrogen enrichment on diesel fueled HCCI combustion

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DOIResolve DOI: http://doi.org/10.1016/j.ijhydene.2011.07.143
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TypeArticle
Journal titleInternational journal of hydrogen energy
Volume36
Issue21
Pages1382013830; # of pages: 11
SubjectHomogeneous charge compression; ignition (HCCI); Diesel fuels; Combustion process; Hydrogen enrichment; Exhaust emissions
AbstractThis paper experimentally investigates the influence of hydrogen enrichment on the combustion and emission characteristics of a diesel HCCI engine using a modified Cooperative Fuel Research (CFR) engin. Three fuels, n-heptane and two middle distillates with cetane numbers of 46.6 and 36.6 are studied. The results show that hydrogen enrichment retards the combustion phasing and reduces the combustion duration of a diesel HCCI engine. Besides, hydrogen enrichment increases the power output and fuel conversion efficiency, and improves the combustion stability. However, hydrogen enrichment may narrow the operational compression ration range and increase the knocking tendency. Both the overall indicated specific CO emissions (isCO) and CO emissions per unit burned diesel fuel mass are reduced by hydrogen enrichment. Although hydrogen enrichment decreases the overall indicated specific unburned hydrocarbon emissions (isHC), it does not significantly affect the HC emissions per unit burned diesel fuel mass.
Publication date
PublisherElsevier
LanguageEnglish
AffiliationNRC Institute for Chemical Process and Environmental Technology; National Research Council Canada
Peer reviewedYes
NRC number53029
NPARC number19335193
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Record identifier9b62ff49-7642-4ee3-9dc2-2384f334eadd
Record created2012-01-27
Record modified2016-05-09
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