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dc.contributor.authorKozarac, Darko
dc.contributor.authorTaritas, Ivan
dc.contributor.authorVuilleumier, David
dc.contributor.authorSaxena, Samveg
dc.contributor.authorDibble, Robert W.
dc.date.accessioned2017-01-02T08:42:37Z
dc.date.available2017-01-02T08:42:37Z
dc.date.issued2016-09-12
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.
dc.identifier.issn0360-5442
dc.identifier.doi10.1016/j.energy.2016.08.055
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.
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.
dc.publisherElsevier BV
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0360544216311689
dc.subjectBiogas
dc.subjectn-Heptane
dc.subjectHCCI
dc.subjectCombustion
dc.subjectEmissions
dc.titleExperimental and numerical analysis of the performance and exhaust gas emissions of a biogas/n-heptane fueled HCCI engine
dc.typeArticle
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalEnergy
dc.contributor.institutionDepartment of Mechanical Engineering, University of California, 6141 Etcheverry Hall, Berkeley, CA 94720-1740, USA
dc.contributor.institutionFaculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lucica 5, 10000 Zagreb, Croatia
dc.contributor.institutionSandia National Laboratories-Combustion Research Facility, Livermore, USA
dc.contributor.institutionEnergy Technologies Area, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 90R1121, Berkeley, CA 94720, USA
kaust.personDibble, Robert W.
dc.date.published-online2016-09-12
dc.date.published-print2016-11


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