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Methanol-HVO blends for efficient low-temperature combustion: analytical research on fuel properties

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dc.contributor.authorWang-Alho, H.
dc.contributor.authorSirviö, K.
dc.contributor.authorHissa, M.
dc.contributor.authorMikulski, M.
dc.contributor.authorNiemi, S.
dc.date.accessioned2023-09-01T07:43:59Z
dc.date.available2023-09-01T07:43:59Z
dc.date.issued2023
dc.descriptionReceived: January 31st, 2023 ; Accepted: April 15th, 2023 ; Published: August 14th, 2023 ; Correspondence: katriina.sirvio@uwasa.fieng
dc.description.abstractNext-generation low-temperature combustion (LTC) engines can accommodate ultra-high efficiency with near-zero NOx and PM emissions. Reaction kinetics is the governing mechanism in LTC. Onboard fuel reactivity control is, thus, becoming an interesting concept that ultimately provides pathways toward a fully fuel-flexible engine. No matter the technical realisation - in-cylinder blending or pre-blending/emulsification - the reactivity control requires fuels with complementary properties. Methanol and hydrotreated vegetable oil (HVO) seem to be one of the most promising, yet under-studied combination for LTC engines. They are both renewable and can be mixed together. Methanol’s high knock resistance and large latent heat of evaporation enable a wide engine load range, with a propensity to reduce NOx emissions and mitigate thermal or mechanical stress. The same properties on the other hand require highly reactive fuel to enable the mixture to self-ignite controllably in LTC conditions. HVO is amongst the most reactive renewable alternatives and its clean paraffinic structure further mitigates particle matter formation. - Importantly, in pre-blending HVO emulsification can resolve the lubricity issues of methanol. In this paper, the aim was to study the engine-relevant properties of HVO-methanol fuel blends. The analysed properties were the distillation properties, density, kinematic viscosity, cetane index, and flash point. Based on the results, the suitability of the chosen blend shares for LTC concepts was evaluated.eng
dc.identifier.issn2228-4907
dc.identifier.publicationAgronomy Research, 2023, vol. 21, no. 2, pp. 994–1005eng
dc.identifier.urihttp://hdl.handle.net/10492/8593
dc.identifier.urihttps://doi.org/10.15159/ar.23.072
dc.publisherEstonian University of Life Scienceseng
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)eng
dc.rightsinfo:eu-repo/semantics/openAccesseng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectCI engineseng
dc.subjectfuel blendingeng
dc.subjectHVOeng
dc.subjectLTCeng
dc.subjectmethanoleng
dc.subjectarticleseng
dc.titleMethanol-HVO blends for efficient low-temperature combustion: analytical research on fuel propertieseng
dc.typeinfo:eu-repo/semantics/articleeng

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2023, Vol. 21, No. 2