Tag Archives: HVO.

994-1005 H. Wang-Alho, K. Sirviö, M. Hissa, M. Mikulski and S. Niemi
Methanol-HVO blends for efficient low-temperature combustion: analytical research on fuel properties
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Methanol-HVO blends for efficient low-temperature combustion: analytical research on fuel properties

H. Wang-Alho, K. Sirviö*, M. Hissa, M. Mikulski and S. Niemi

University of Vaasa, School of Technology and Innovations, Energy Technology,
Wolffintie 34, FI65200 Vaasa, Finland
*Correspondence: katriina.sirvio@uwasa.fi

Abstract:

Next-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.

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964–970 G. Birzietis,, V. Pirs, I. Dukulis and M. Gailis,
Effect of commercial diesel fuel and hydrotreated vegetable oil blend on automobile performance
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Effect of commercial diesel fuel and hydrotreated vegetable oil blend on automobile performance

G. Birzietis¹,*, V. Pirs¹, I. Dukulis¹ and M. Gailis¹,²

¹ Latvia University of Agriculture, Faculty of Engineering, Motor Vehicle institute, 5 J. Cakstes boulv., LV-3001 Jelgava, Latvia
² Riga Technical University, Faculty of Mechanical Engineering, Transport and Aeronautics, Department of Automotive Engineering, Viskalu 36, LV-1006 Riga, Latvia
*Correspondence: gints.birzietis@llu.lv

Abstract:

The new fuel ‘Pro Diesel’ that contains hydrotreated vegetable oil (HVO) was recently introduced in Baltic market. It raised some interest on performance of the new fuel among fleet and individual consumers. The authors evaluated and compared performance of modern M1 class automobile, using regular fossil diesel fuel and Pro Diesel fuel.
Torque, power and fuel consumption of the vehicle have been evaluated on chassis dynamometer, in steady state and driving cycle mode.
Depending on test conditions, engine power and torque was increased up to 2%, and fuel consumption reduced up to 3.9%, when diesel fuel/ HVO blend was used.

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613-620 M. Pexa, J. Čedík,, J. Mařík, V. Hönig, Š. Horníčková and K. Kubín
Comparison of the operating characteristics of the internal combustion engine using rapeseed oil methyl ester and hydrogenated oil
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Comparison of the operating characteristics of the internal combustion engine using rapeseed oil methyl ester and hydrogenated oil

M. Pexa¹, J. Čedík¹,*, J. Mařík¹, V. Hönig², Š. Horníčková² and K. Kubín³

¹Czech University of Life Sciences Prague, Faculty of Engineering, Department for Quality and Dependability of Machines, Kamýcká 129, CZ16521 Prague 6, Czech Republic; *Correspondence: cedikj@tf.czu.cz
²Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Department of Chemistry, Kamýcká 129, CZ16521 Prague 6, Czech Republic
³Research Institute of Agricultural Engineering, p.r.i., Drnovská 507, CZ16101 Prague 6, Czech Republic

Abstract:

The issue of the use of alternative fuels in diesel engines is discussed in this paper. The purpose is to reduce the dependence of EU Member States on fuels of petroleum origin. One of the possibilities is the use of oils from biological materials. The use of the oil in standard engines is not usually possible. The engine modification or the fuel modification is necessary. Esterification or hydrogenation of oils can be used as the fuel modification. Impact of these changes on the operational characteristics of a turbocharged internal combustion engine is observed in the paper. The internal combustion engine of the tractor Zetor Foretrra 8641 was used for testing. This engine was burdened using a dynamometer to the PTO. Performance and fuel consumption of the engine were monitored during measurement. As fuels the 100% rapeseed methyl ester and 100% hydrogenated oil was elected. Based on the results we can say that the operating parameters of the internal combustion engine does not change significantly when using these fuels.

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