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dc.contributor.authorShankar, Vijai
dc.contributor.authorSajid, Muhammad Bilal
dc.contributor.authorAl-Qurashi, Khalid
dc.contributor.authorAtef, Nour
dc.contributor.authorAl Khesho, Issam
dc.contributor.authorAhmed, Ahfaz
dc.contributor.authorChung, Suk Ho
dc.contributor.authorRoberts, William L.
dc.contributor.authorMorganti, Kai
dc.contributor.authorSarathy, Mani
dc.date.accessioned2016-08-10T07:02:30Z
dc.date.available2016-08-10T07:02:30Z
dc.date.issued2016-04-05
dc.identifier.citationBhavani Shankar, V., Sajid, M., Al-Qurashi, K., Atef, N. et al., "Primary Reference Fuels (PRFs) as Surrogates for Low Sensitivity Gasoline Fuels," SAE Technical Paper 2016-01-0748, 2016, doi:10.4271/2016-01-0748.
dc.identifier.doi10.4271/2016-01-0748
dc.identifier.urihttp://hdl.handle.net/10754/618129
dc.description.abstractPrimary Reference Fuels (PRFs) - binary mixtures of n-heptane and iso-octane based on Research Octane Number (RON) - are popular gasoline surrogates for modeling combustion in spark ignition engines. The use of these two component surrogates to represent real gasoline fuels for simulations of HCCI/PCCI engines needs further consideration, as the mode of combustion is very different in these engines (i.e. the combustion process is mainly controlled by the reactivity of the fuel). This study presents an experimental evaluation of PRF surrogates for four real gasoline fuels termed FACE (Fuels for Advanced Combustion Engines) A, C, I, and J in a motored CFR (Cooperative Fuels Research) engine. This approach enables the surrogate mixtures to be evaluated purely from a chemical kinetic perspective. The gasoline fuels considered in this study have very low sensitivities, S (RON-MON), and also exhibit two-stage ignition behavior. The first stage heat release, which is termed Low Temperature Heat Release (LTHR), controls the combustion phasing in this operating mode. As a result, the performance of the PRF surrogates was evaluated by its ability to mimic the low temperature chemical reactivity of the real gasoline fuels. This was achieved by comparing the LTHR from the engine pressure histories. The PRF surrogates were able to consistently reproduce the amount of LTHR, closely match the phasing of LTHR, and the compression ratio for the start of hot ignition of the real gasoline fuels. This suggests that the octane quality of a surrogate fuel is a good indicator of the fuel’s reactivity across low (LTC), negative temperature coefficient (NTC), and high temperature chemical (HTC) reactivity regimes.
dc.description.sponsorshipThe authors wish to thank Adrian Ichim for performing the engine experiments. This work was supported by KAUST and the Saudi Aramco FUELCOM program.
dc.publisherSAE International
dc.relation.urlhttp://papers.sae.org/2016-01-0748/
dc.rightsArchived with thanks to SAE 2016 World Congress and Exhibition
dc.titlePrimary Reference Fuels (PRFs) as Surrogates for Low Sensitivity Gasoline Fuels
dc.typeConference Paper
dc.contributor.departmentChemical Engineering Program
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentCombustion and Laser Diagnostics Laboratory
dc.contributor.departmentCombustion and Pyrolysis Chemistry (CPC) Group
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmenthigh-pressure combustion (HPC) Research Group
dc.identifier.journalSAE Technical Paper Series
dc.conference.dateApril 12-14, 2016
dc.conference.nameSAE 2016 World Congress and Exhibition
dc.conference.locationCobo Center Detroit, MI, USA
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionSaudi Aramco
kaust.personShankar, Vijai
kaust.personSajid, Muhammad Bilal
kaust.personAl-Qurashi, Khalid
kaust.personAtef, Nour
kaust.personAl Khesho, Issam
kaust.personAhmed, Ahfaz
kaust.personChung, Suk Ho
kaust.personRoberts, William L.
kaust.personSarathy, Mani
refterms.dateFOA2016-10-05T00:00:00Z


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