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dc.contributor.authorGorbatenko, Inna
dc.contributor.authorSingh, Eshan
dc.contributor.authorSarathy, Mani
dc.contributor.authorNicolle, Andre
dc.date.accessioned2021-10-06T06:27:13Z
dc.date.available2021-10-06T06:27:13Z
dc.date.issued2021-09-05
dc.identifier.citationGorbatenko, I., Singh, E., Sarathy, M., & Nicolle, A. (2021). Effects of Fuel Composition on Auto-Ignition and Detonation Development in Boosted Spark-Ignited Engines. SAE Technical Paper Series. doi:10.4271/2021-24-0022
dc.identifier.doi10.4271/2021-24-0022
dc.identifier.urihttp://hdl.handle.net/10754/672168
dc.description.abstractThe development of highly boosted and high compression spark-ignition engines with enhanced thermal efficiencies is primarily limited by knock and super-knock. Super-knock is an excessively high intensity knock which has been related to a developing detonation process. This study investigates the knocking tendency of different gasoline surrogate fuels with varying research octane numbers (RON), octane sensitivity (S) and composition. The ξ/ɛ diagram with an enclosed detonation peninsula is used to assess the knocking tendency of different fuels. The diagram plots ξ, the ratio of acoustic to auto-ignitive velocity, against ɛ, the ratio of the transit time of an acoustic wave through a hot spot, to the heat release time (τe). Constant volume simulations of auto-ignition delay times (τi) and excitation times (τe) obtained from chemical kinetic calculations, enable calculations of ξ and ɛ. Their location for different fuels and operating conditions on the ξ/ɛ diagram, relative to the detonation peninsula, defines their mode of reaction propagation and the severity of a detonation. It was shown that excitation times are not affected by RON and S of the fuel. However, they are strongly dependent on the mixture composition. Fuels exhibiting a strong negative temperature chemistry (NTC) region are found to enter detonation development and explosion region, and are more likely to result in super-knock events in boosted spark-ignition engines.
dc.description.sponsorshipThis work was funded by the KAUST Clean Fuels Consortium and its member companies
dc.publisherSAE International
dc.relation.urlhttps://www.sae.org/content/2021-24-0022/
dc.rightsArchived with thanks to SAE International
dc.titleEffects of Fuel Composition on Auto-Ignition and Detonation Development in Boosted Spark-Ignited Engines
dc.typeConference Paper
dc.contributor.departmentAramco Fuel Research Center, KAUST
dc.contributor.departmentChemical Engineering Program
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentCombustion and Pyrolysis Chemistry (CPC) Group
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.rights.embargodate2022-03-05
dc.conference.name15th International Conference on Engines & Vehicles
dc.eprint.versionPre-print
kaust.personGorbatenko, Inna
kaust.personSingh, Eshan
kaust.personSarathy, Mani
kaust.personNicolle, Andre


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