Experimental and numerical analysis of the performance and exhaust gas emissions of a biogas/n-heptane fueled HCCI engine

Handle URI:
http://hdl.handle.net/10754/622196
Title:
Experimental and numerical analysis of the performance and exhaust gas emissions of a biogas/n-heptane fueled HCCI engine
Authors:
Kozarac, Darko ( 0000-0003-4453-4031 ) ; Taritas, Ivan; Vuilleumier, David; Saxena, Samveg; Dibble, Robert W. ( 0000-0002-4002-9356 )
Abstract:
The use of highly reactive fuel as an ignition promoter enables operation of biogas fueled homogeneous charge compression ignition (HCCI) engine at low intake temperatures with practical control of combustion phasing. In order to gain some insight into this operation mode the influence of addition of n-heptane on combustion, performance, emissions and control of combustion phasing of a biogas fueled HCCI engine is experimentally researched and presented in this paper. Additionally, the performance analysis of the practical engine solution for such operation is estimated by using the numerical simulation of entire engine. The results showed that the introduction of highly reactive fuel results with a significant change in operating conditions and with a change in optimum combustion phasing. The addition of n-heptane resulted in lower nitrogen oxides and increased carbon monoxide emissions, while the unburned hydrocarbons emissions were strongly influenced by combustion phasing and at optimal conditions are lowered compared to pure biogas operation. The results also showed a practical operation range for strategies that use equivalence ratio as a control of load. Simulation results showed that the difference in performance between pure biogas and n-heptane/biogas operation is even greater when the practical engine solution is taken into account.
KAUST Department:
Clean Combustion Research Center
Citation:
Kozarac D, Taritas I, Vuilleumier D, Saxena S, Dibble RW (2016) Experimental and numerical analysis of the performance and exhaust gas emissions of a biogas/n-heptane fueled HCCI engine. Energy 115: 180–193. Available: http://dx.doi.org/10.1016/j.energy.2016.08.055.
Publisher:
Elsevier BV
Journal:
Energy
Issue Date:
12-Sep-2016
DOI:
10.1016/j.energy.2016.08.055
Type:
Article
ISSN:
0360-5442
Sponsors:
The research was enabled by the Fulbright scholarship that supported the visit of the principal investigator to the University of California Berkeley. The funding for the research was provided from the research grants of the Combustion analysis Laboratory of University of California Berkeley.
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0360544216311689
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorKozarac, Darkoen
dc.contributor.authorTaritas, Ivanen
dc.contributor.authorVuilleumier, Daviden
dc.contributor.authorSaxena, Samvegen
dc.contributor.authorDibble, Robert W.en
dc.date.accessioned2017-01-02T08:42:37Z-
dc.date.available2017-01-02T08:42:37Z-
dc.date.issued2016-09-12en
dc.identifier.citationKozarac D, Taritas I, Vuilleumier D, Saxena S, Dibble RW (2016) Experimental and numerical analysis of the performance and exhaust gas emissions of a biogas/n-heptane fueled HCCI engine. Energy 115: 180–193. Available: http://dx.doi.org/10.1016/j.energy.2016.08.055.en
dc.identifier.issn0360-5442en
dc.identifier.doi10.1016/j.energy.2016.08.055en
dc.identifier.urihttp://hdl.handle.net/10754/622196-
dc.description.abstractThe use of highly reactive fuel as an ignition promoter enables operation of biogas fueled homogeneous charge compression ignition (HCCI) engine at low intake temperatures with practical control of combustion phasing. In order to gain some insight into this operation mode the influence of addition of n-heptane on combustion, performance, emissions and control of combustion phasing of a biogas fueled HCCI engine is experimentally researched and presented in this paper. Additionally, the performance analysis of the practical engine solution for such operation is estimated by using the numerical simulation of entire engine. The results showed that the introduction of highly reactive fuel results with a significant change in operating conditions and with a change in optimum combustion phasing. The addition of n-heptane resulted in lower nitrogen oxides and increased carbon monoxide emissions, while the unburned hydrocarbons emissions were strongly influenced by combustion phasing and at optimal conditions are lowered compared to pure biogas operation. The results also showed a practical operation range for strategies that use equivalence ratio as a control of load. Simulation results showed that the difference in performance between pure biogas and n-heptane/biogas operation is even greater when the practical engine solution is taken into account.en
dc.description.sponsorshipThe research was enabled by the Fulbright scholarship that supported the visit of the principal investigator to the University of California Berkeley. The funding for the research was provided from the research grants of the Combustion analysis Laboratory of University of California Berkeley.en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0360544216311689en
dc.subjectBiogasen
dc.subjectn-Heptaneen
dc.subjectHCCIen
dc.subjectCombustionen
dc.subjectEmissionsen
dc.titleExperimental and numerical analysis of the performance and exhaust gas emissions of a biogas/n-heptane fueled HCCI engineen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalEnergyen
dc.contributor.institutionDepartment of Mechanical Engineering, University of California, 6141 Etcheverry Hall, Berkeley, CA 94720-1740, USAen
dc.contributor.institutionFaculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lucica 5, 10000 Zagreb, Croatiaen
dc.contributor.institutionSandia National Laboratories-Combustion Research Facility, Livermore, USAen
dc.contributor.institutionEnergy Technologies Area, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 90R1121, Berkeley, CA 94720, USAen
kaust.authorDibble, Robert W.en
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