dc.contributor.author | Somers, Kieran P. | |
dc.contributor.author | Cracknell, Roger F. | |
dc.contributor.author | Curran, Henry J. | |
dc.date.accessioned | 2019-04-15T10:39:52Z | |
dc.date.issued | 2018-06-29 | |
dc.identifier.citation | Somers, Kieran P., Cracknell, Roger F., & Curran, Henry J. (2019). A chemical kinetic interpretation of the octane appetite of modern gasoline engines. Proceedings of the Combustion Institute, 37(4), 4857-4864. doi: https://doi.org/10.1016/j.proci.2018.05.123 | en_IE |
dc.identifier.issn | 1540-7489 | |
dc.identifier.uri | http://hdl.handle.net/10379/15122 | |
dc.description.abstract | Fuel anti-knock quality is a critical property with respect to the effective design of next-generation spark-ignition engines which aim to have increased efficiency, and lower emissions. Increasing evidence in the literature supports the fact that the current regulatory measures of fuel anti-knock quality, the research octane number (RON), and motor octane number (MON), are becoming decreasingly relevant to commercial engines. Extrapolation and interpolation of the RON/MON scales to the thermodynamic conditions of modern engines is potentially valuable for the synergistic design of fuels and engines with greater efficiency. The K-value approach, which linearly weights the RON/MON scales based on the thermodynamic history of an engine, offers a convenient experimental method to do so, although complementary theoretical interpretations of K-value measurements are lacking in the literature.
This work uses a phenomenological engine model with a detailed chemical kinetic model to predict and interpret known trends in the K-value with respect to engine intake temperature, pressure, and engine speed. The modelling results support experimental trends which show that the K-value increases with increasing intake temperature and engine speed, and decreases with increasing intake pressure. A chemical kinetic interpretation of trends in the K-value based on fundamental ignition behaviour is presented. The results show that combined experimental/theoretical approaches, which employ a knowledge of fundamental fuel data (gas phase kinetics, ignition delay times), can provide a reliable means to assess trends in the real-world performance of commercial fuels under the operating conditions of modern engines. (C) 2018 The Combustion Institute. Published by Elsevier Inc. All rights reserved. | en_IE |
dc.description.sponsorship | Funding from the European Commission Marie Curie Transfer of Knowledge Scheme (FP7) pursuant to Contract PIAP-GA-2013-610897 GENFUEL is greatly acknowledged. KPS would like to thank Dr. Ultan Burke and Dr. Colin Banyon for fruitful discussions on the topic. | en_IE |
dc.format | application/pdf | en_IE |
dc.language.iso | en | en_IE |
dc.publisher | Elsevier | en_IE |
dc.relation.ispartof | Proceedings Of The Combustion Institute | en |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Ireland | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ | |
dc.subject | IGNITION | en_IE |
dc.subject | SENSITIVITY | en_IE |
dc.subject | TOLUENE | en_IE |
dc.subject | MON | en_IE |
dc.subject | RON | en_IE |
dc.title | A chemical kinetic interpretation of the octane appetite of modern gasoline engines | en_IE |
dc.type | Article | en_IE |
dc.date.updated | 2019-04-11T07:43:58Z | |
dc.identifier.doi | 10.1016/j.proci.2018.05.123 | |
dc.local.publishedsource | https://doi.org/10.1016/j.proci.2018.05.123 | en_IE |
dc.description.peer-reviewed | peer-reviewed | |
dc.contributor.funder | Seventh Framework Programme | en_IE |
dc.description.embargo | 2020-06-29 | |
dc.internal.rssid | 16173010 | |
dc.local.contact | Henry Curran, Dept Of Chemistry, Room 215, Arts/Science Building, Nui Galway. 3856 Email: henry.curran@nuigalway.ie | |
dc.local.copyrightchecked | Yes | |
dc.local.version | ACCEPTED | |
dcterms.project | info:eu-repo/grantAgreement/EC/FP7::SP3::PEOPLE/610897/EU/Addressing Fundamental Challenges in the Design of new generation fuels./GENFUEL | en_IE |
nui.item.downloads | 116 | |