Effect of natural and forced charge air humidity on the performance and emissions of a compression-ignition engine operating at high warm altitude

[EN] The effect of ambient humidity on the performance and pollutant emissions of internal combustion engines is not considered in the literature despite type-approval criteria are moving closer to real driving conditions. This work analyses experimentally the effects of charge air humidity at high...

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Autores: Serrano, J.R.|||0000-0003-0692-3917, Martín, Jaime|||0000-0002-0496-3176, Piqueras, P.|||0000-0002-3767-0839, Tabet-Aleixandre, Roberto, Gómez-Gil, Javier
Formato: artículo
Fecha de publicación:2023
País:España
Recursos:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/201547
Acesso em linha:https://riunet.upv.es/handle/10251/201547
Access Level:acceso abierto
Palavra-chave:Ambient humidity
Compression ignition engine
Performance
Pollutant emissions
MAQUINAS Y MOTORES TERMICOS
07.- Asegurar el acceso a energías asequibles, fiables, sostenibles y modernas para todos
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oai_identifier_str oai:riunet.upv.es:10251/201547
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Effect of natural and forced charge air humidity on the performance and emissions of a compression-ignition engine operating at high warm altitude
title Effect of natural and forced charge air humidity on the performance and emissions of a compression-ignition engine operating at high warm altitude
spellingShingle Effect of natural and forced charge air humidity on the performance and emissions of a compression-ignition engine operating at high warm altitude
Serrano, J.R.|||0000-0003-0692-3917
Ambient humidity
Compression ignition engine
Performance
Pollutant emissions
MAQUINAS Y MOTORES TERMICOS
07.- Asegurar el acceso a energías asequibles, fiables, sostenibles y modernas para todos
title_short Effect of natural and forced charge air humidity on the performance and emissions of a compression-ignition engine operating at high warm altitude
title_full Effect of natural and forced charge air humidity on the performance and emissions of a compression-ignition engine operating at high warm altitude
title_fullStr Effect of natural and forced charge air humidity on the performance and emissions of a compression-ignition engine operating at high warm altitude
title_full_unstemmed Effect of natural and forced charge air humidity on the performance and emissions of a compression-ignition engine operating at high warm altitude
title_sort Effect of natural and forced charge air humidity on the performance and emissions of a compression-ignition engine operating at high warm altitude
dc.creator.none.fl_str_mv Serrano, J.R.|||0000-0003-0692-3917
Martín, Jaime|||0000-0002-0496-3176
Piqueras, P.|||0000-0002-3767-0839
Tabet-Aleixandre, Roberto
Gómez-Gil, Javier
author Serrano, J.R.|||0000-0003-0692-3917
author_facet Serrano, J.R.|||0000-0003-0692-3917
Martín, Jaime|||0000-0002-0496-3176
Piqueras, P.|||0000-0002-3767-0839
Tabet-Aleixandre, Roberto
Gómez-Gil, Javier
author_role author
author2 Martín, Jaime|||0000-0002-0496-3176
Piqueras, P.|||0000-0002-3767-0839
Tabet-Aleixandre, Roberto
Gómez-Gil, Javier
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Máquinas y Motores Térmicos
Escuela Técnica Superior de Ingeniería Aeroespacial y Diseño Industrial
Instituto Universitario de Investigación CMT - Clean Mobility & Thermofluids
Escuela Técnica Superior de Ingeniería Industrial
AGENCIA ESTATAL DE INVESTIGACION
Universitat Politècnica de València
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Ambient humidity
Compression ignition engine
Performance
Pollutant emissions
MAQUINAS Y MOTORES TERMICOS
07.- Asegurar el acceso a energías asequibles, fiables, sostenibles y modernas para todos
topic Ambient humidity
Compression ignition engine
Performance
Pollutant emissions
MAQUINAS Y MOTORES TERMICOS
07.- Asegurar el acceso a energías asequibles, fiables, sostenibles y modernas para todos
description [EN] The effect of ambient humidity on the performance and pollutant emissions of internal combustion engines is not considered in the literature despite type-approval criteria are moving closer to real driving conditions. This work analyses experimentally the effects of charge air humidity at high warm altitudes, where the use of exhaust gas recirculation (EGR) is typically lowered and even avoided to recover engine performance at the expense of NOx emissions increase, on the response of a compression-ignition engine under a wide range of steady-state con-ditions in terms of engine-out emissions and specific fuel consumption. The impact of specific humidity varia-tions within the atmospheric range was analysed by coupling the engine to an altitude simulator with pressure, temperature, and humidity control capabilities. High altitudes and warm & high ambient temperatures were explored (2000 m at 30 degrees C and 2500 m at 45 degrees C) to cover ambient specific humidity up to 30 gwater/kgdry_air. In addition, the effects of increasing the specific humidity above the atmospheric levels were considered at 2500 m and 45 degrees C to emulate forced injection of water in the engine intake line corresponding to 60 gwater/kgdry_air. With this approach, understanding of the role of humidity is provided to highlight its importance as additional ambient property in emission control. In parallel, the assessment of the forced water content increase to control NOx emissions when EGR must be lowered was performed due to the altitude impact on the engine performance and turbocharger limits. The results showed a consistent and significant reduction in engine-out NOx emissions as the ambient humidity increased, reaching up to 300% with respect to the dry case, caused by the decrease in O2 availability due to the water content increase. The benefits of high humidity in NOx emission control at high altitudes when EGR is not feasible were complemented by an improved trade-off with particulate matter emission compared to the standard from EGR use. The results evidenced a reduction in opacity close to 250% for a given engine-out NOx emission when EGR was replaced by water content. By contrast, the slowdown of the combustion process as the fresh air humidity increased deteriorated the specific fuel consumption significantly as the engine load and speed increased. Nevertheless, these penalties ranged from 2 to 2.7% in the worst conditions and showed the same sensitivity for EGR and humidity increases.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-03-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/201547
url https://riunet.upv.es/handle/10251/201547
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2020-114289RB-I00 INTEGRACION DE SISTEMAS DE POST-TRATAMIENTO DE GASES DE ESCAPE MULTIFUNCIONALES EN VEHICULOS DE PROPULSION HIBRIDA
Universitat Politècnica de València https://doi.org/10.13039/501100004233 PAID-01-18 Programa de Ayudas de Investigación y Desarrollo (PAID-01-18)
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial (by-nc)
http://creativecommons.org/licenses/by-nc/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial (by-nc)
http://creativecommons.org/licenses/by-nc/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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spelling Effect of natural and forced charge air humidity on the performance and emissions of a compression-ignition engine operating at high warm altitudeSerrano, J.R.|||0000-0003-0692-3917Martín, Jaime|||0000-0002-0496-3176Piqueras, P.|||0000-0002-3767-0839Tabet-Aleixandre, RobertoGómez-Gil, JavierAmbient humidityCompression ignition enginePerformancePollutant emissionsMAQUINAS Y MOTORES TERMICOS07.- Asegurar el acceso a energías asequibles, fiables, sostenibles y modernas para todos[EN] The effect of ambient humidity on the performance and pollutant emissions of internal combustion engines is not considered in the literature despite type-approval criteria are moving closer to real driving conditions. This work analyses experimentally the effects of charge air humidity at high warm altitudes, where the use of exhaust gas recirculation (EGR) is typically lowered and even avoided to recover engine performance at the expense of NOx emissions increase, on the response of a compression-ignition engine under a wide range of steady-state con-ditions in terms of engine-out emissions and specific fuel consumption. The impact of specific humidity varia-tions within the atmospheric range was analysed by coupling the engine to an altitude simulator with pressure, temperature, and humidity control capabilities. High altitudes and warm & high ambient temperatures were explored (2000 m at 30 degrees C and 2500 m at 45 degrees C) to cover ambient specific humidity up to 30 gwater/kgdry_air. In addition, the effects of increasing the specific humidity above the atmospheric levels were considered at 2500 m and 45 degrees C to emulate forced injection of water in the engine intake line corresponding to 60 gwater/kgdry_air. With this approach, understanding of the role of humidity is provided to highlight its importance as additional ambient property in emission control. In parallel, the assessment of the forced water content increase to control NOx emissions when EGR must be lowered was performed due to the altitude impact on the engine performance and turbocharger limits. The results showed a consistent and significant reduction in engine-out NOx emissions as the ambient humidity increased, reaching up to 300% with respect to the dry case, caused by the decrease in O2 availability due to the water content increase. The benefits of high humidity in NOx emission control at high altitudes when EGR is not feasible were complemented by an improved trade-off with particulate matter emission compared to the standard from EGR use. The results evidenced a reduction in opacity close to 250% for a given engine-out NOx emission when EGR was replaced by water content. By contrast, the slowdown of the combustion process as the fresh air humidity increased deteriorated the specific fuel consumption significantly as the engine load and speed increased. Nevertheless, these penalties ranged from 2 to 2.7% in the worst conditions and showed the same sensitivity for EGR and humidity increases.This research has been supported by Grant PID2020-114289RB-I00 funded by the Spanish Ministerio de Ciencia e Innovacion - Agencia Estatal de Investigacion (MCIN/AEI/10.13039/501100011033). The PhD candidate Roberto Tabet has been funded by Universitat Politecnica de Valencia through grant PAID -01-18.ElsevierDepartamento de Máquinas y Motores TérmicosEscuela Técnica Superior de Ingeniería Aeroespacial y Diseño IndustrialInstituto Universitario de Investigación CMT - Clean Mobility & ThermofluidsEscuela Técnica Superior de Ingeniería IndustrialAGENCIA ESTATAL DE INVESTIGACIONUniversitat Politècnica de ValènciaRepositorio Institucional de la Universitat Politècnica de València Riunet20232023-03-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/201547reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2020-114289RB-I00 INTEGRACION DE SISTEMAS DE POST-TRATAMIENTO DE GASES DE ESCAPE MULTIFUNCIONALES EN VEHICULOS DE PROPULSION HIBRIDAUniversitat Politècnica de València https://doi.org/10.13039/501100004233 PAID-01-18 Programa de Ayudas de Investigación y Desarrollo (PAID-01-18)open accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento - No comercial (by-nc) http://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/2015472026-06-13T07:49:27Z
score 15,300719

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