Biofuel blend late post-injection effects on oil dilution and diesel oxidation catalyst performance

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Tilli, Aki Hulkkonen, Tuomo Kaario, Ossi Larmi, Martti Sarjovaara, Teemu Lehto, Kalle 2018-12-10T10:11:15Z 2018-12-10T10:11:15Z 2018-11-01
dc.identifier.citation Tilli , A , Hulkkonen , T , Kaario , O , Larmi , M , Sarjovaara , T & Lehto , K 2018 , ' Biofuel blend late post-injection effects on oil dilution and diesel oxidation catalyst performance ' International Journal of Engine Research , vol. 19 , no. 9 , pp. 941-951 . DOI: 10.1177/1468087417736466 en
dc.identifier.issn 1468-0874
dc.identifier.issn 2041-3149
dc.identifier.other PURE UUID: 1c492abe-3b9e-4af5-86fe-070977566903
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE LINK:
dc.identifier.other PURE FILEURL:
dc.description.abstract In this article, the effects of different biofuel–diesel blends on engine oil dilution and diesel oxidation catalyst performance during late post-injections were investigated. The engine tests were made with an off-road diesel engine under low load conditions at 1200 r/min engine speed. During the experiments, oil samples were periodically taken from the engine oil and later analyzed. Emissions and temperatures before and after the diesel oxidation catalyst were also measured. The fuels studied were fossil EN590:2013 diesel fuel, 30 vol.% biodiesel (fatty acid methyl ester) and 30 vol.% hydrotreated vegetable oil, which is a paraffinic diesel fuel fulfilling the EN15940 specification. The novelty of the study is based on two parts. First, similar late post-injection tests were run with blends of both hydrotreated vegetable oil and fatty acid methyl ester, giving a rare comparison with the fuels. Second, oil dilution and the fuel exit rates during normal mode without the late post-injections were measured. Theresults showed the oil dilution and the diesel oxidation catalyst performance to be very similar with regular diesel and hydrotreated vegetable oil blend. With the fatty acid methyl ester blend, increased oil dilution, smaller temperature rise in the diesel oxidation catalyst and higher emissions were measured. This indicates that during diesel particulate filter regeneration by late post-injections, fatty acid methyl ester blends increase fuel consumption and require shorter oil change intervals, while hydrotreated vegetable oil blends require no parameter changes. en
dc.format.extent 11
dc.format.extent 941-951
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries International Journal of Engine Research en
dc.relation.ispartofseries Volume 19, issue 9 en
dc.rights openAccess en
dc.subject.other Automotive Engineering en
dc.subject.other Aerospace Engineering en
dc.subject.other Ocean Engineering en
dc.subject.other Mechanical Engineering en
dc.subject.other 214 Mechanical engineering en
dc.title Biofuel blend late post-injection effects on oil dilution and diesel oxidation catalyst performance en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Mechanical Engineering
dc.contributor.department Neste Jacobs Oy
dc.subject.keyword diesel particulate filter regeneration
dc.subject.keyword emissions
dc.subject.keyword fatty acid methyl ester
dc.subject.keyword hydrotreated vegetable oil
dc.subject.keyword late post-injection
dc.subject.keyword oil dilution
dc.subject.keyword oxidation catalyst
dc.subject.keyword Paraffinic diesel
dc.subject.keyword Automotive Engineering
dc.subject.keyword Aerospace Engineering
dc.subject.keyword Ocean Engineering
dc.subject.keyword Mechanical Engineering
dc.subject.keyword 214 Mechanical engineering
dc.identifier.urn URN:NBN:fi:aalto-201812105958
dc.identifier.doi 10.1177/1468087417736466
dc.type.version acceptedVersion

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