Relating the octane numbers of fuels to ignition delay times measured in an ignition quality tester (IQT)

Handle URI:
http://hdl.handle.net/10754/622241
Title:
Relating the octane numbers of fuels to ignition delay times measured in an ignition quality tester (IQT)
Authors:
Naser, Nimal ( 0000-0002-2740-2179 ) ; Yang, Seung Yeon ( 0000-0003-4512-8713 ) ; Kalghatgi, Gautam; Chung, Suk-Ho ( 0000-0001-8782-312X )
Abstract:
A methodology for estimating the octane index (OI), the research octane number (RON) and the motor octane number (MON) using ignition delay times from a constant volume combustion chamber with liquid fuel injection is proposed by adopting an ignition quality tester. A baseline data of ignition delay times were determined using an ignition quality tester at a charge pressure of 21.3 bar between 770 and 850 K and an equivalence ratio of 0.7 for various primary reference fuels (PRFs, mixtures of isooctane and n-heptane). Our methodology was developed using ignition delay times for toluene reference fuels (mixtures of toluene and n-heptane). A correlation between the OI and the ignition delay time at the initial charge temperature enabled the OI of non-PRFs to be predicted at specified temperatures. The methodology was validated using ignition delay times for toluene primary reference fuels (ternary mixtures of toluene, iso-octane, and n-heptane), fuels for advanced combustion engines (FACE) gasolines, and certification gasolines. Using this methodology, the RON, the MON, and the octane sensitivity were estimated in agreement with values obtained from standard test methods. A correlation between derived cetane number and RON is also provided. (C) 2016 Elsevier Ltd. All rights reserved.
KAUST Department:
Clean Combustion Research Center
Citation:
Naser N, Yang SY, Kalghatgi G, Chung SH (2017) Relating the octane numbers of fuels to ignition delay times measured in an ignition quality tester (IQT). Fuel 187: 117–127. Available: http://dx.doi.org/10.1016/j.fuel.2016.09.013.
Publisher:
Elsevier BV
Journal:
Fuel
Issue Date:
21-Sep-2016
DOI:
10.1016/j.fuel.2016.09.013
Type:
Article
ISSN:
0016-2361
Sponsors:
This work was supported by Saudi Aramco under the FUELCOM program and the Clean Combustion Research Center (CCRC) at King Abdullah University of Science and Technology (KAUST).
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0016236116308729
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorNaser, Nimalen
dc.contributor.authorYang, Seung Yeonen
dc.contributor.authorKalghatgi, Gautamen
dc.contributor.authorChung, Suk-Hoen
dc.date.accessioned2017-01-02T08:42:40Z-
dc.date.available2017-01-02T08:42:40Z-
dc.date.issued2016-09-21en
dc.identifier.citationNaser N, Yang SY, Kalghatgi G, Chung SH (2017) Relating the octane numbers of fuels to ignition delay times measured in an ignition quality tester (IQT). Fuel 187: 117–127. Available: http://dx.doi.org/10.1016/j.fuel.2016.09.013.en
dc.identifier.issn0016-2361en
dc.identifier.doi10.1016/j.fuel.2016.09.013en
dc.identifier.urihttp://hdl.handle.net/10754/622241-
dc.description.abstractA methodology for estimating the octane index (OI), the research octane number (RON) and the motor octane number (MON) using ignition delay times from a constant volume combustion chamber with liquid fuel injection is proposed by adopting an ignition quality tester. A baseline data of ignition delay times were determined using an ignition quality tester at a charge pressure of 21.3 bar between 770 and 850 K and an equivalence ratio of 0.7 for various primary reference fuels (PRFs, mixtures of isooctane and n-heptane). Our methodology was developed using ignition delay times for toluene reference fuels (mixtures of toluene and n-heptane). A correlation between the OI and the ignition delay time at the initial charge temperature enabled the OI of non-PRFs to be predicted at specified temperatures. The methodology was validated using ignition delay times for toluene primary reference fuels (ternary mixtures of toluene, iso-octane, and n-heptane), fuels for advanced combustion engines (FACE) gasolines, and certification gasolines. Using this methodology, the RON, the MON, and the octane sensitivity were estimated in agreement with values obtained from standard test methods. A correlation between derived cetane number and RON is also provided. (C) 2016 Elsevier Ltd. All rights reserved.en
dc.description.sponsorshipThis work was supported by Saudi Aramco under the FUELCOM program and the Clean Combustion Research Center (CCRC) at King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0016236116308729en
dc.subjectOctane indexen
dc.subjectOctane numbersen
dc.subjectIgnition quality testeren
dc.subjectAutoignitionen
dc.subjectCombustionen
dc.subjectGasolineen
dc.subjectDerived cetane numberen
dc.titleRelating the octane numbers of fuels to ignition delay times measured in an ignition quality tester (IQT)en
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalFuelen
dc.contributor.institutionSaudi Aramco Research and Development Center, Fuel Technology Research and Development Division, Dhahran, Saudi Arabiaen
kaust.authorNaser, Nimalen
kaust.authorYang, Seung Yeonen
kaust.authorChung, Suk-Hoen
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