Ignition studies of n-heptane/iso-octane/toluene blends

Handle URI:
http://hdl.handle.net/10754/621760
Title:
Ignition studies of n-heptane/iso-octane/toluene blends
Authors:
Javed, Tamour ( 0000-0002-3328-9061 ) ; Lee, Changyoul; Alabbad, Mohammed; Djebbi, Khalil; Beshir, Mohamed; Badra, Jihad; Curran, Henry; Farooq, Aamir ( 0000-0001-5296-2197 )
Abstract:
Ignition delay times of four ternary blends of n-heptane/iso-octane/toluene, referred to as Toluene Primary Reference Fuels (TPRFs), have been measured in a high-pressure shock tube and in a rapid compression machine. The TPRFs were formulated to match the research octane number (RON) and motor octane number (MON) of two high-octane gasolines and two prospective low-octane naphtha fuels. The experiments were carried out over a wide range of temperatures (650–1250 K), at pressures of 10, 20 and 40 bar, and at equivalence ratios of 0.5 and 1.0. It was observed that the ignition delay times of these TPRFs exhibit negligible octane dependence at high temperatures (T > 1000 K), weak octane dependence at low temperatures (T < 700 K), and strong octane dependence in the negative temperature coefficient (NTC) regime. A detailed chemical kinetic model was used to simulate and interpret the measured data. It was shown that the kinetic model requires general improvements to better predict low-temperature conditions and particularly requires improvements for high sensitivity (high toluene concentration) TPRF blends. These datasets will serve as important benchmark for future gasoline surrogate mechanism development and validation. © 2016 The Combustion Institute
KAUST Department:
Clean Combustion Research Center; Physical Sciences and Engineering (PSE) Division
Citation:
Javed T, Lee C, AlAbbad M, Djebbi K, Beshir M, et al. (2016) Ignition studies of n-heptane/iso-octane/toluene blends. Combustion and Flame 171: 223–233. Available: http://dx.doi.org/10.1016/j.combustflame.2016.06.008.
Publisher:
Elsevier BV
Journal:
Combustion and Flame
Issue Date:
9-Jul-2016
DOI:
10.1016/j.combustflame.2016.06.008
Type:
Article
ISSN:
0010-2180
Sponsors:
Research reported in this paper was funded by Saudi Aramco under the FUELCOM program and by King Abdullah University of Science and Technology (KAUST).
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorJaved, Tamouren
dc.contributor.authorLee, Changyoulen
dc.contributor.authorAlabbad, Mohammeden
dc.contributor.authorDjebbi, Khalilen
dc.contributor.authorBeshir, Mohameden
dc.contributor.authorBadra, Jihaden
dc.contributor.authorCurran, Henryen
dc.contributor.authorFarooq, Aamiren
dc.date.accessioned2016-11-03T13:24:20Z-
dc.date.available2016-11-03T13:24:20Z-
dc.date.issued2016-07-09en
dc.identifier.citationJaved T, Lee C, AlAbbad M, Djebbi K, Beshir M, et al. (2016) Ignition studies of n-heptane/iso-octane/toluene blends. Combustion and Flame 171: 223–233. Available: http://dx.doi.org/10.1016/j.combustflame.2016.06.008.en
dc.identifier.issn0010-2180en
dc.identifier.doi10.1016/j.combustflame.2016.06.008en
dc.identifier.urihttp://hdl.handle.net/10754/621760-
dc.description.abstractIgnition delay times of four ternary blends of n-heptane/iso-octane/toluene, referred to as Toluene Primary Reference Fuels (TPRFs), have been measured in a high-pressure shock tube and in a rapid compression machine. The TPRFs were formulated to match the research octane number (RON) and motor octane number (MON) of two high-octane gasolines and two prospective low-octane naphtha fuels. The experiments were carried out over a wide range of temperatures (650–1250 K), at pressures of 10, 20 and 40 bar, and at equivalence ratios of 0.5 and 1.0. It was observed that the ignition delay times of these TPRFs exhibit negligible octane dependence at high temperatures (T > 1000 K), weak octane dependence at low temperatures (T < 700 K), and strong octane dependence in the negative temperature coefficient (NTC) regime. A detailed chemical kinetic model was used to simulate and interpret the measured data. It was shown that the kinetic model requires general improvements to better predict low-temperature conditions and particularly requires improvements for high sensitivity (high toluene concentration) TPRF blends. These datasets will serve as important benchmark for future gasoline surrogate mechanism development and validation. © 2016 The Combustion Instituteen
dc.description.sponsorshipResearch reported in this paper was funded by Saudi Aramco under the FUELCOM program and by King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.subjectIgnition delay timesen
dc.titleIgnition studies of n-heptane/iso-octane/toluene blendsen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalCombustion and Flameen
dc.contributor.institutionCombustion Chemistry Centre, National University of Ireland Galway, Galway, Irelanden
dc.contributor.institutionFuel Technology Division, R&DC, Saudi Aramco, Dhahran, Saudi Arabiaen
kaust.authorJaved, Tamouren
kaust.authorAlabbad, Mohammeden
kaust.authorDjebbi, Khalilen
kaust.authorBeshir, Mohameden
kaust.authorFarooq, Aamiren
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