Turpentine as an additive for diesel engines: experimental study on pollutant emissions and engine performance

Detalhes bibliográficos
Autor(a) principal: Chivu, Robert Mădălin
Data de Publicação: 2023
Outros Autores: Martins, Jorge, Popescu, Florin, Uzuneanu, Krisztina, Ion, Ion V., Gonçalves, Margarida, Codau, Teodor Cezar, Onofrei, Elena, Brito, F.P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://hdl.handle.net/1822/86976
Resumo: The need for reducing fossil fuel consumption and greenhouse gas (GHG) emissions in internal combustion engines has raised the opportunity for the use of renewable energy sources. For the progressive replacement of fossil fuels like diesel, those derived from the sustainable management of forest resources may be a good option. In Portugal, pine trees (pinus pinaster) are among the most widely cultivated tree species. Turpentine can be extracted from their sap without harming the tree. Turpentine is known to be a good fuel with a lower viscosity than regular diesel but with a comparable caloric value, boiling point and ignition characteristics, although it is not widely used as a compression ignition fuel. Moreover, recent research has highlighted the possibility of substantially increasing the turpentine yield through biotechnology, bringing it closer to economic viability. The present study investigates the performance, pollutant emissions and fuel consumption of a 1.6 L four-cylinder direct-injection diesel engine operating with several blends of commercial diesel fuel and turpentine obtained from pine trees. The aim of this study was to assess whether it would be possible to maintain or even improve the performance, fuel consumption and GHG and pollutant emissions (HC, NOx, CO and PM) of the engine with the partial incorporation of this biofuel. Turpentine blends of up to 30% in substitution of regular diesel fuel were tested. The main novelties of the present work are related to (i) the careful testing of a still-insufficiently studied fuel that could gain economical attractiveness with the recent developments in yield improvement through biotechnology and (ii) the tests conducted under fixed engine load positions typical of road and highway conditions. The addition of this biofuel only slightly impacted the engine performance parameters. However, a slightly positive effect was observed in terms of torque, with an increase of up to 7.9% at low load for the 15T85D mixture and 6.8% at high load being observed. Power registered an increase of 9% for the 15T85D mixture at low speed and an increase of 5% for the 30T70D mixture at high speed when compared to the reference fuel (commercial diesel fuel). While the efficiency and fossil GHG emissions were improved with the incorporation of turpentine, it had a mixed effect on polluting emissions such as unburned hydrocarbons (HC) and smoke (PM) and a negative effect on nitrogen oxides (NOx). NOx emissions increased by 30% for high loads and 20% for low loads, mainly as an indirect effect of the improvement in the engine performance and not so much as a consequence of the marginally higher oxygen content of turpentine relative to commercial diesel fuel.
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spelling Turpentine as an additive for diesel engines: experimental study on pollutant emissions and engine performanceTurpentine fuelDiesel substitutionEngine testingTerpene biofuelsThe need for reducing fossil fuel consumption and greenhouse gas (GHG) emissions in internal combustion engines has raised the opportunity for the use of renewable energy sources. For the progressive replacement of fossil fuels like diesel, those derived from the sustainable management of forest resources may be a good option. In Portugal, pine trees (pinus pinaster) are among the most widely cultivated tree species. Turpentine can be extracted from their sap without harming the tree. Turpentine is known to be a good fuel with a lower viscosity than regular diesel but with a comparable caloric value, boiling point and ignition characteristics, although it is not widely used as a compression ignition fuel. Moreover, recent research has highlighted the possibility of substantially increasing the turpentine yield through biotechnology, bringing it closer to economic viability. The present study investigates the performance, pollutant emissions and fuel consumption of a 1.6 L four-cylinder direct-injection diesel engine operating with several blends of commercial diesel fuel and turpentine obtained from pine trees. The aim of this study was to assess whether it would be possible to maintain or even improve the performance, fuel consumption and GHG and pollutant emissions (HC, NOx, CO and PM) of the engine with the partial incorporation of this biofuel. Turpentine blends of up to 30% in substitution of regular diesel fuel were tested. The main novelties of the present work are related to (i) the careful testing of a still-insufficiently studied fuel that could gain economical attractiveness with the recent developments in yield improvement through biotechnology and (ii) the tests conducted under fixed engine load positions typical of road and highway conditions. The addition of this biofuel only slightly impacted the engine performance parameters. However, a slightly positive effect was observed in terms of torque, with an increase of up to 7.9% at low load for the 15T85D mixture and 6.8% at high load being observed. Power registered an increase of 9% for the 15T85D mixture at low speed and an increase of 5% for the 30T70D mixture at high speed when compared to the reference fuel (commercial diesel fuel). While the efficiency and fossil GHG emissions were improved with the incorporation of turpentine, it had a mixed effect on polluting emissions such as unburned hydrocarbons (HC) and smoke (PM) and a negative effect on nitrogen oxides (NOx). NOx emissions increased by 30% for high loads and 20% for low loads, mainly as an indirect effect of the improvement in the engine performance and not so much as a consequence of the marginally higher oxygen content of turpentine relative to commercial diesel fuel.This research was funded by the following projects, institutions and funding agencies: Research Project UIDB/04077/2020 from the Mechanical Engineering and Resource Sustainability Center—MEtRICs—through Fundação para a Ciência e a Tecnologia (FCT), Norte2020, Compete2020, under the PORTUGAL 2020 Partnership Agreement, through Portuguese national funds of FCT/MCTES (PIDDAC) and the European Regional Development Fund; Research project DREAM (Dynamics of the REsources and technological Advance in harvesting Marine renewable energy), supported by the Romanian Executive Agency for Higher Education, Research, Development and Innovation Funding—UEFISCDI—grant number PN-III-P4-ID-PCE-2020-0008.Multidisciplinary Digital Publishing Institute (MDPI)Universidade do MinhoChivu, Robert MădălinMartins, JorgePopescu, FlorinUzuneanu, KrisztinaIon, Ion V.Gonçalves, MargaridaCodau, Teodor CezarOnofrei, ElenaBrito, F.P.2023-07-042023-07-04T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/86976engChivu, R.M.; Martins, J.; Popescu, F.; Uzuneanu, K.; Ion, I.V.; Goncalves, M.; Codău, T.-C.; Onofrei, E.; Brito, F.P. Turpentine as an Additive for Diesel Engines: Experimental Study on Pollutant Emissions and Engine Performance. Energies 2023, 16, 5150. https://doi.org/10.3390/en161351501996-107310.3390/en16135150https://www.mdpi.com/1996-1073/16/13/5150info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-10-21T01:27:39Zoai:repositorium.sdum.uminho.pt:1822/86976Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:39:06.411802Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Turpentine as an additive for diesel engines: experimental study on pollutant emissions and engine performance
title Turpentine as an additive for diesel engines: experimental study on pollutant emissions and engine performance
spellingShingle Turpentine as an additive for diesel engines: experimental study on pollutant emissions and engine performance
Chivu, Robert Mădălin
Turpentine fuel
Diesel substitution
Engine testing
Terpene biofuels
title_short Turpentine as an additive for diesel engines: experimental study on pollutant emissions and engine performance
title_full Turpentine as an additive for diesel engines: experimental study on pollutant emissions and engine performance
title_fullStr Turpentine as an additive for diesel engines: experimental study on pollutant emissions and engine performance
title_full_unstemmed Turpentine as an additive for diesel engines: experimental study on pollutant emissions and engine performance
title_sort Turpentine as an additive for diesel engines: experimental study on pollutant emissions and engine performance
author Chivu, Robert Mădălin
author_facet Chivu, Robert Mădălin
Martins, Jorge
Popescu, Florin
Uzuneanu, Krisztina
Ion, Ion V.
Gonçalves, Margarida
Codau, Teodor Cezar
Onofrei, Elena
Brito, F.P.
author_role author
author2 Martins, Jorge
Popescu, Florin
Uzuneanu, Krisztina
Ion, Ion V.
Gonçalves, Margarida
Codau, Teodor Cezar
Onofrei, Elena
Brito, F.P.
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Chivu, Robert Mădălin
Martins, Jorge
Popescu, Florin
Uzuneanu, Krisztina
Ion, Ion V.
Gonçalves, Margarida
Codau, Teodor Cezar
Onofrei, Elena
Brito, F.P.
dc.subject.por.fl_str_mv Turpentine fuel
Diesel substitution
Engine testing
Terpene biofuels
topic Turpentine fuel
Diesel substitution
Engine testing
Terpene biofuels
description The need for reducing fossil fuel consumption and greenhouse gas (GHG) emissions in internal combustion engines has raised the opportunity for the use of renewable energy sources. For the progressive replacement of fossil fuels like diesel, those derived from the sustainable management of forest resources may be a good option. In Portugal, pine trees (pinus pinaster) are among the most widely cultivated tree species. Turpentine can be extracted from their sap without harming the tree. Turpentine is known to be a good fuel with a lower viscosity than regular diesel but with a comparable caloric value, boiling point and ignition characteristics, although it is not widely used as a compression ignition fuel. Moreover, recent research has highlighted the possibility of substantially increasing the turpentine yield through biotechnology, bringing it closer to economic viability. The present study investigates the performance, pollutant emissions and fuel consumption of a 1.6 L four-cylinder direct-injection diesel engine operating with several blends of commercial diesel fuel and turpentine obtained from pine trees. The aim of this study was to assess whether it would be possible to maintain or even improve the performance, fuel consumption and GHG and pollutant emissions (HC, NOx, CO and PM) of the engine with the partial incorporation of this biofuel. Turpentine blends of up to 30% in substitution of regular diesel fuel were tested. The main novelties of the present work are related to (i) the careful testing of a still-insufficiently studied fuel that could gain economical attractiveness with the recent developments in yield improvement through biotechnology and (ii) the tests conducted under fixed engine load positions typical of road and highway conditions. The addition of this biofuel only slightly impacted the engine performance parameters. However, a slightly positive effect was observed in terms of torque, with an increase of up to 7.9% at low load for the 15T85D mixture and 6.8% at high load being observed. Power registered an increase of 9% for the 15T85D mixture at low speed and an increase of 5% for the 30T70D mixture at high speed when compared to the reference fuel (commercial diesel fuel). While the efficiency and fossil GHG emissions were improved with the incorporation of turpentine, it had a mixed effect on polluting emissions such as unburned hydrocarbons (HC) and smoke (PM) and a negative effect on nitrogen oxides (NOx). NOx emissions increased by 30% for high loads and 20% for low loads, mainly as an indirect effect of the improvement in the engine performance and not so much as a consequence of the marginally higher oxygen content of turpentine relative to commercial diesel fuel.
publishDate 2023
dc.date.none.fl_str_mv 2023-07-04
2023-07-04T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://hdl.handle.net/1822/86976
url https://hdl.handle.net/1822/86976
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Chivu, R.M.; Martins, J.; Popescu, F.; Uzuneanu, K.; Ion, I.V.; Goncalves, M.; Codău, T.-C.; Onofrei, E.; Brito, F.P. Turpentine as an Additive for Diesel Engines: Experimental Study on Pollutant Emissions and Engine Performance. Energies 2023, 16, 5150. https://doi.org/10.3390/en16135150
1996-1073
10.3390/en16135150
https://www.mdpi.com/1996-1073/16/13/5150
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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