Physical and chemical effects of low octane gasoline fuels on compression ignition combustion

Handle URI:
http://hdl.handle.net/10754/622236
Title:
Physical and chemical effects of low octane gasoline fuels on compression ignition combustion
Authors:
Badra, Jihad; Viollet, Yoann; Elwardani, Ahmed Elsaid ( 0000-0002-2536-2089 ) ; Im, Hong G. ( 0000-0001-7080-1266 ) ; Chang, Junseok
Abstract:
Gasoline compression ignition (GCI) engines running on low octane gasoline fuels are considered an attractive alternative to traditional spark ignition engines. In this study, three fuels with different chemical and physical characteristics have been investigated in single cylinder engine running in GCI combustion mode at part-load conditions both experimentally and numerically. The studied fuels are: Saudi Aramco light naphtha (SALN) (Research octane number (RON) = 62 and final boiling point (FBP) = 91 °C), Haltermann straight run naphtha (HSRN) (RON = 60 and FBP = 140 °C) and a primary reference fuel (PRF65) (RON = 65 and FBP = 99 °C). Injection sweeps, where the start of injection (SOI) is changed between −60 and −11 CAD aTDC, have been performed for the three fuels. Full cycle computational fluid dynamics (CFD) simulations were executed using PRFs as chemical surrogates for the naphtha fuels. Physical surrogates based on the evaporation characteristics of the naphtha streams have been developed and their properties have been implemented in the engine simulations. It was found that the three fuels have similar combustion phasings and emissions at the conditions tested in this work with minor differences at SOI earlier than −30 CAD aTDC. These trends were successfully reproduced by the CFD calculations. The chemical and physical effects were further investigated numerically. It was found that the physical characteristics of the fuel significantly affect the combustion for injections earlier than −30 CAD aTDC because of the low evaporation rates of the fuel because of the higher boiling temperature of the fuel and the colder in-cylinder air during injection. © 2016 Elsevier Ltd
KAUST Department:
Clean Combustion Research Center
Citation:
Badra J, Viollet Y, Elwardany A, Im HG, Chang J (2016) Physical and chemical effects of low octane gasoline fuels on compression ignition combustion. Applied Energy 183: 1197–1208. Available: http://dx.doi.org/10.1016/j.apenergy.2016.09.060.
Publisher:
Elsevier BV
Journal:
Applied Energy
Issue Date:
30-Sep-2016
DOI:
10.1016/j.apenergy.2016.09.060
Type:
Article
ISSN:
0306-2619
Sponsors:
This work was sponsored by the Fuel Technology Division at Saudi Aramco R&DC. The surrogate formulation work at King Abdullah University of Science and Technology (KAUST) was supported by KAUST and Saudi Aramco under the FUELCOM program.
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0306261916313629
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorBadra, Jihaden
dc.contributor.authorViollet, Yoannen
dc.contributor.authorElwardani, Ahmed Elsaiden
dc.contributor.authorIm, Hong G.en
dc.contributor.authorChang, Junseoken
dc.date.accessioned2017-01-02T08:42:39Z-
dc.date.available2017-01-02T08:42:39Z-
dc.date.issued2016-09-30en
dc.identifier.citationBadra J, Viollet Y, Elwardany A, Im HG, Chang J (2016) Physical and chemical effects of low octane gasoline fuels on compression ignition combustion. Applied Energy 183: 1197–1208. Available: http://dx.doi.org/10.1016/j.apenergy.2016.09.060.en
dc.identifier.issn0306-2619en
dc.identifier.doi10.1016/j.apenergy.2016.09.060en
dc.identifier.urihttp://hdl.handle.net/10754/622236-
dc.description.abstractGasoline compression ignition (GCI) engines running on low octane gasoline fuels are considered an attractive alternative to traditional spark ignition engines. In this study, three fuels with different chemical and physical characteristics have been investigated in single cylinder engine running in GCI combustion mode at part-load conditions both experimentally and numerically. The studied fuels are: Saudi Aramco light naphtha (SALN) (Research octane number (RON) = 62 and final boiling point (FBP) = 91 °C), Haltermann straight run naphtha (HSRN) (RON = 60 and FBP = 140 °C) and a primary reference fuel (PRF65) (RON = 65 and FBP = 99 °C). Injection sweeps, where the start of injection (SOI) is changed between −60 and −11 CAD aTDC, have been performed for the three fuels. Full cycle computational fluid dynamics (CFD) simulations were executed using PRFs as chemical surrogates for the naphtha fuels. Physical surrogates based on the evaporation characteristics of the naphtha streams have been developed and their properties have been implemented in the engine simulations. It was found that the three fuels have similar combustion phasings and emissions at the conditions tested in this work with minor differences at SOI earlier than −30 CAD aTDC. These trends were successfully reproduced by the CFD calculations. The chemical and physical effects were further investigated numerically. It was found that the physical characteristics of the fuel significantly affect the combustion for injections earlier than −30 CAD aTDC because of the low evaporation rates of the fuel because of the higher boiling temperature of the fuel and the colder in-cylinder air during injection. © 2016 Elsevier Ltden
dc.description.sponsorshipThis work was sponsored by the Fuel Technology Division at Saudi Aramco R&DC. The surrogate formulation work at King Abdullah University of Science and Technology (KAUST) was supported by KAUST and Saudi Aramco under the FUELCOM program.en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0306261916313629en
dc.subjectGasoline compression ignition engineen
dc.subjectIgnition delay timesen
dc.subjectLow-octane fuelen
dc.subjectMixingen
dc.subjectNaphtha fuelsen
dc.titlePhysical and chemical effects of low octane gasoline fuels on compression ignition combustionen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalApplied Energyen
dc.contributor.institutionFuel Technology Division, R&DC, Saudi Aramco, Dhahran, Saudi Arabiaen
dc.contributor.institutionMechanical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypten
kaust.authorElwardani, Ahmed Elsaiden
kaust.authorIm, Hong G.en
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