Ignition delay and soot oxidative reactivity of MTBE blended diesel fuel

Handle URI:
http://hdl.handle.net/10754/564905
Title:
Ignition delay and soot oxidative reactivity of MTBE blended diesel fuel
Authors:
Yang, Seung Yeon ( 0000-0003-4512-8713 ) ; Naser, Nimal ( 0000-0002-2740-2179 ) ; Chung, Suk-Ho ( 0000-0001-8782-312X ) ; Al-Qurashi, Khalid
Abstract:
Methyl tert-butyl ether (MTBE) was added to diesel fuel to investigate the effect on ignition delay and soot oxidative reactivity. An ignition quality tester (IQT) was used to study the ignition propensity of MTBE blended diesel fuels in a reactive spray environment. The IQT data showed that ignition delay increases linearly as the MTBE fraction increases in the fuel. A four-stroke single cylinder diesel engine was used to generate soot samples for a soot oxidation study. Soot samples were pre-treated using a tube furnace in a nitrogen environment to remove any soluble organic fractions and moisture content. Non-isothermal oxidation of soot samples was conducted using a thermogravimetric analyzer (TGA). It was observed that oxidation of 'MTBE soot' started began at a lower temperature and had higher reaction rate than 'diesel soot' across a range of temperatures. Several kinetic analyses including an isoconversional method and a combined model fitting method were carried out to evaluate kinetic parameters. The results showed that Diesel and MTBE soot samples had similar activation energy but the pre-exponential factor of MTBE soot was much higher than that of the Diesel soot. This may explain why MTBE soot was more reactive than Diesel soot. It is suggested that adding MTBE to diesel fuel is better for DPF regeneration since an MTBE blend can significantly influence the ignition characteristics and, consequently, the oxidative reactivity of soot. Copyright © 2014 SAE International.
KAUST Department:
Clean Combustion Research Center; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Combustion and Laser Diagnostics Laboratory
Publisher:
SAE International
Journal:
SAE Technical Paper Series
Conference/Event name:
SAE 2014 World Congress and Exhibition
Issue Date:
1-Apr-2014
DOI:
10.4271/2014-01-1266
Type:
Conference Paper
Appears in Collections:
Conference Papers; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorYang, Seung Yeonen
dc.contributor.authorNaser, Nimalen
dc.contributor.authorChung, Suk-Hoen
dc.contributor.authorAl-Qurashi, Khaliden
dc.date.accessioned2015-08-04T07:24:42Zen
dc.date.available2015-08-04T07:24:42Zen
dc.date.issued2014-04-01en
dc.identifier.doi10.4271/2014-01-1266en
dc.identifier.urihttp://hdl.handle.net/10754/564905en
dc.description.abstractMethyl tert-butyl ether (MTBE) was added to diesel fuel to investigate the effect on ignition delay and soot oxidative reactivity. An ignition quality tester (IQT) was used to study the ignition propensity of MTBE blended diesel fuels in a reactive spray environment. The IQT data showed that ignition delay increases linearly as the MTBE fraction increases in the fuel. A four-stroke single cylinder diesel engine was used to generate soot samples for a soot oxidation study. Soot samples were pre-treated using a tube furnace in a nitrogen environment to remove any soluble organic fractions and moisture content. Non-isothermal oxidation of soot samples was conducted using a thermogravimetric analyzer (TGA). It was observed that oxidation of 'MTBE soot' started began at a lower temperature and had higher reaction rate than 'diesel soot' across a range of temperatures. Several kinetic analyses including an isoconversional method and a combined model fitting method were carried out to evaluate kinetic parameters. The results showed that Diesel and MTBE soot samples had similar activation energy but the pre-exponential factor of MTBE soot was much higher than that of the Diesel soot. This may explain why MTBE soot was more reactive than Diesel soot. It is suggested that adding MTBE to diesel fuel is better for DPF regeneration since an MTBE blend can significantly influence the ignition characteristics and, consequently, the oxidative reactivity of soot. Copyright © 2014 SAE International.en
dc.publisherSAE Internationalen
dc.titleIgnition delay and soot oxidative reactivity of MTBE blended diesel fuelen
dc.typeConference Paperen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentCombustion and Laser Diagnostics Laboratoryen
dc.identifier.journalSAE Technical Paper Seriesen
dc.conference.date8 April 2014 through 10 April 2014en
dc.conference.nameSAE 2014 World Congress and Exhibitionen
dc.conference.locationDetroit, MIen
dc.eprint.versionPublisher's Version/PDFen
kaust.authorYang, Seung Yeonen
kaust.authorNaser, Nimalen
kaust.authorChung, Suk-Hoen
kaust.authorAl-Qurashi, Khaliden
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