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Spline regression modelling of PTO performance of tractor fuelled with different biodiesels

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dc.contributor.authorAybek, A.
dc.contributor.authorArslan, S.
dc.contributor.authorUcgul, M.
dc.contributor.authorÜçok, S.
dc.date.issued2017
dc.description.abstractThe objective of this study was to investigate the possibility of fitting spline regression models for power take-off (PTO) performance characteristics of an agricultural tractor tested with four different fuels, including diesel fuel (B0) and three biodiesel blends made of canola oil (B10: 10% biodiesel + 90% petro-diesel blend; B20: 20% biodiesel + 90% petro-diesel blend; B30: 30% biodiesel + 90% petro-diesel blend). The performance characteristics evaluated were PTO power, engine torque, engine fuel consumption, and specific fuel consumption. Due to sharp slopes in measured quantities around the nominal engine speed (2200 r/min), compared to the standard regression method, the spline regression models suited well to the experimental data with coefficient of determination R2=0.99 for PTO power and engine torque. R2 varied between 0.97 and 0.99 for fuel consumption and 0.91 and 0.95 for specific fuel consumption. The weaker correlation found for specific fuel consumption could be attributed to profound fluctuations in measured data causing atypical pattern in the corresponding graphs around the nominal engine speed. It was concluded that splines were useful to accurately predict the measured PTO power and engine torque. Neither standard methods nor splines were sufficient to obtain very good regression models for specific fuel consumption
dc.identifier.citationInternational Journal of Agricultural and Biological Engineering, 2017; 10(3):115-120
dc.identifier.doi10.3965/j.ijabe.20171003.3220
dc.identifier.issn1934-6352
dc.identifier.issn1934-6352
dc.identifier.urihttps://hdl.handle.net/11541.2/126974
dc.language.isoen
dc.publisherChinese Society of Agricultural Engineering
dc.rightsCopyright 2017 The author(s). This work is licensed under a Creative Commons Attribution 3.0 License.
dc.source.urihttps://ijabe.org/index.php/ijabe/article/view/3220
dc.subjectbiodiesel
dc.subjectperformance characteristics
dc.subjectpower take-off
dc.subjecttractor
dc.subjectspline modelling
dc.titleSpline regression modelling of PTO performance of tractor fuelled with different biodiesels
dc.typeJournal article
pubs.publication-statusPublished
ror.fileinfo12146154710001831 13146154700001831 3220-10546-3-PB
ror.mmsid9916135196401831

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