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Novel approach for connecting real driving emissions to the European vehicle laboratorial certification test procedure

2019-12Journal article Restricted access
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dc.contributor.authorVarella, Roberto A.
dc.contributor.authorRibau, João
dc.contributor.authorBaptista, Patricia
dc.contributor.authorSousa, Luís
dc.contributor.authorDuarte, Gonçalo
dc.date.accessioned2019-11-19T10:14:42Z
dc.date.available2019-11-19T10:14:42Z
dc.date.issued2019-12
dc.description.abstractVehicle emission certification is evaluated under laboratorial conditions, where vehicles perform a standard driving cycle in controlled conditions leading to several critics, which have resulted in the implementation of the Worldwide harmonized Light Vehicle Test Procedure (WLTP) and the Real Driving Emissions (RDE) testing procedure, as a complementary certification procedure. RDE is still under debate since boundary conditions; evaluation and trip selection methods are still being studied to allow test reproducibility. Currently, the official data analysis method uses the moving average window (MAW_EC), based on the WLTP CO2 emissions for trip validity evaluation (RDE package 4) and emissions (RDE package 3). However, this does not consider the impact of vehicle dynamics. Consequently, this work focuses on developing a novel method to relate certification driving cycle dynamics and on-road test vehicle dynamics, to evaluate RDE tests fuel use and exhaust emissions in a comparable way to certification driving cycles, indicating how close, or far, real-world driving is from the laboratorial certification test. For this, a new method was developed called road vehicle evaluation method (ROVET), which relies on the cycle vehicle dynamic and on-road trip dynamics for assessing if both tests are comparable. Results from 5 measured vehicles with a portable emissions measurement system (PEMS) through reproducibility tests and 2 case studies, show that the ROVET provides results closer to the certification calculated reference than the most commonly used method in Europe (1% avg. difference for ROVET while 8% avg. difference for MAW_EC, regarding CO2 emission, for example). The use of vehicle dynamics on construction and references of a method could be used to incentivize the regulators to review the references used by the current used methods, which suffers several criticisms since their release. As the regulated methods are in constant update, this study could be useful for helping to improve or to be used as additional method for future vehicle certification procedures.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationVARELLA, Roberto A.; [et al] – Novel approach for connecting real driving emissions to the European vehicle laboratorial certification test procedure. Environmental Science and Pollution Research. ISSN 0944-1344. Vol. 26, N.º 34 (2019), pp. 35163-35182pt_PT
dc.identifier.doihttps://doi.org/10.1007/s11356-019-06484-1pt_PT
dc.identifier.issn0944-1344
dc.identifier.issn1614-7499
dc.identifier.urihttp://hdl.handle.net/10400.21/10714
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.relationUID/ EEA 50009/2019 - FCTpt_PT
dc.relationUID/EMS/00712/2019 - FCTpt_PT
dc.relation.publisherversionhttps://link.springer.com/content/pdf/10.1007%2Fs11356-019-06484-1.pdfpt_PT
dc.subjectReal driving emissionspt_PT
dc.subjectPortable emissions measurement systempt_PT
dc.subjectVehicle certificationpt_PT
dc.subjectData evaluation methodpt_PT
dc.titleNovel approach for connecting real driving emissions to the European vehicle laboratorial certification test procedurept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FEEA%2F50009%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FEMS%2F00712%2F2013/PT
oaire.citation.endPage35182pt_PT
oaire.citation.issue34
oaire.citation.startPage35163pt_PT
oaire.citation.titleEnvironmental Science and Pollution Researchpt_PT
oaire.citation.volume26
oaire.fundingStream5876
oaire.fundingStream5876
person.familyNameRibau
person.familyNameBaptista
person.familyNameSousa
person.familyNameDuarte
person.givenNameJoão
person.givenNamePatricia
person.givenNameLuis
person.givenNameGonçalo
person.identifier.ciencia-idD311-0F0C-D8E2
person.identifier.ciencia-id0D18-21FF-BD67
person.identifier.ciencia-id5414-D855-E2F5
person.identifier.ciencia-id6918-836F-646D
person.identifier.orcid0000-0002-1018-6908
person.identifier.orcid0000-0003-1559-9151
person.identifier.orcid0000-0002-0575-4894
person.identifier.orcid0000-0002-7216-611X
person.identifier.ridB-7694-2014
person.identifier.ridA-5356-2012
person.identifier.ridI-1242-2014
person.identifier.scopus-author-id44261708900
person.identifier.scopus-author-id16202135300
person.identifier.scopus-author-id7004775542
person.identifier.scopus-author-id57189656488
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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