000120164 001__ 120164
000120164 005__ 20230914083542.0
000120164 0247_ $$2doi$$a10.3390/vehicles4040050
000120164 0248_ $$2sideral$$a131168
000120164 037__ $$aART-2022-131168
000120164 041__ $$aeng
000120164 100__ $$0(orcid)0000-0001-6765-4218$$aFernández, Eugenio
000120164 245__ $$aSuitability assessment of NOx emissions measurements with PTI equipment
000120164 260__ $$c2022
000120164 5060_ $$aAccess copy available to the general public$$fUnrestricted
000120164 5203_ $$aThe measurement of NOx emissions in vehicles has so far been exclusively carried out during the type-approval process. For this purpose, high-precision gas measurement laboratory equipment and Portable Emission Measurement Systems (PEMS) are used. Both types of equipment are costly in terms of price, maintenance, complexity, and time of use (calibration and maintenance requirements). Currently, NOx emissions measurements in Periodic Technical Inspections (PTIs) are being considered, but PEMS or laboratory equipment is unsuitable for this function, and PTI-grade equipment has to be used. Although CO and O2 are currently being reliably measured with this equipment, there is not enough information about its accuracy for NOx measurements. Accordingly, in this paper, simultaneous measures have been performed over the same engine in a test cell, with a laboratory and a PTI gas analyser to assess the accuracy of the latter. When performing the test with the most similar conditions found in PTI, our results show that the PTI gas analyser shows an average deviation of 2.6 ppm and 9% rel. with respect to high-precision laboratory equipment for concentrations below 700 ppm NOx, which can be considered acceptable for periodic technical inspections.
000120164 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000120164 594__ $$a2.9$$b2022
000120164 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000120164 700__ $$0(orcid)0000-0002-6148-1253$$aOrtego, Abel
000120164 700__ $$0(orcid)0000-0003-3330-1793$$aValero, Alicia$$uUniversidad de Zaragoza
000120164 700__ $$0(orcid)0000-0003-4440-830X$$aAlba, Juan J.$$uUniversidad de Zaragoza
000120164 7102_ $$15004$$2530$$aUniversidad de Zaragoza$$bDpto. Ingeniería Mecánica$$cÁrea Ingen.e Infraestr.Transp.
000120164 7102_ $$15004$$2590$$aUniversidad de Zaragoza$$bDpto. Ingeniería Mecánica$$cÁrea Máquinas y Motores Térmi.
000120164 773__ $$g4, 4 (2022), 917-941$$tVehicles$$x2624-8921
000120164 8564_ $$s6706482$$uhttps://zaguan.unizar.es/record/120164/files/texto_completo.pdf$$yVersión publicada
000120164 8564_ $$s2650497$$uhttps://zaguan.unizar.es/record/120164/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000120164 909CO $$ooai:zaguan.unizar.es:120164$$particulos$$pdriver
000120164 951__ $$a2023-09-13-13:22:35
000120164 980__ $$aARTICLE