Application of oxygen enrichment and adiabatic humidification to suction air for reducing exhaust emissions in a gasoline engine

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dc.authoridKapusuz, Murat/0000-0002-2243-8551
dc.authoridCAKMAK, Abdulvahap/0000-0003-1434-6697
dc.authoridOZCAN, HAKAN/0000-0002-7848-3650
dc.contributor.authorKapusuz, Murat
dc.contributor.authorCakmak, Abdulvahap
dc.contributor.authorOzcan, Hakan
dc.date.accessioned2025-03-23T19:34:43Z
dc.date.available2025-03-23T19:34:43Z
dc.date.issued2023
dc.departmentSinop Üniversitesi
dc.description.abstractThis paper aims to reduce the exhaust emissions of a gasoline engine by conditioning the engine intake air. The oxygen enrichment of inlet air to reduce the HC and CO emissions and humidifying the inlet air to control NOX emissions was applied. The intake air oxygen concentration was increased from 21% to 25% by 2% interval. The oxygen enrichment of the engine inlet air increased the combustion rate, and thus combustion improved, and thermal efficiency increased. This situation led to a reduction in HC emissions and CO emissions. However, the combustion improvement caused a striking rise in NOX emissions because of the high cylinder temperature and high oxygen concentration. This undesirable effect was tried to be alleviated by adiabatic humidification of the engine inlet air. For this purpose, the relative humidity of the intake air was increased from 35% to 65% before and then to 85%. For this, the intake air passed through the conditioning chamber, the dry thermometer temperature lowered by 4 degrees C for a relative humidity of 85% thanks to the evaporative cooling of water. The results showed that oxygen enrichment caused a 13.5% and 9.3% increase in thermal efficiency in order of half and full load. The humidification method resulted in a 14.3% and 18.3% decrease in thermal efficiency for half and full load. The results also showed that the humidification method could only control NOX increment generated at half load and 23% oxygen condition.
dc.description.sponsorshipScientific Research Projects Commission of Ondokuz Mayis University, Turkey [PYO.MUH.1901.15.003]
dc.description.sponsorshipThis work has been supported by the Scientific Research Projects Commission of Ondokuz Mayis University, Turkey, with a project number of PYO.MUH.1901.15.003.
dc.identifier.doi10.1080/15567036.2021.1898495
dc.identifier.endpage211
dc.identifier.issn1556-7036
dc.identifier.issn1556-7230
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85102931529
dc.identifier.scopusqualityQ1
dc.identifier.startpage194
dc.identifier.urihttps://doi.org/10.1080/15567036.2021.1898495
dc.identifier.urihttps://hdl.handle.net/11486/5716
dc.identifier.volume45
dc.identifier.wosWOS:000631919400001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTaylor & Francis Inc
dc.relation.ispartofEnergy Sources Part A-Recovery Utilization and Environmental Effects
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250323
dc.subjectEngine performance
dc.subjectexhaust emissions
dc.subjectoxygen enrichment
dc.subjectadiabatic humidification
dc.subjectemission reduction
dc.titleApplication of oxygen enrichment and adiabatic humidification to suction air for reducing exhaust emissions in a gasoline engine
dc.typeArticle

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