Enhancing diesel engine efficiency and emission control: A study on hydrogen and water vapor injection

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dc.authorid0000-0001-8129-1548
dc.contributor.authorAkbalık, Zafer
dc.contributor.authorArpa, Orhan
dc.date.accessioned2025-02-22T14:10:54Z
dc.date.available2025-02-22T14:10:54Z
dc.date.issued2025
dc.departmentDicle Üniversitesi, Mühendislik Fakültesi, Makine Mühendisliği Bölümüen_US
dc.description.abstractIn this study, the effects of injecting water vapor and hydrogen into a diesel engine on engine performance and exhaust emissions were experimentally investigated. The experiments were carried out in three stages: running the engine on standard diesel fuel, adding 250 g/h of water vapor to the intake manifold and finally injecting 0.17 l/min of hydrogen and 250 g/h of water vapor together. The hydrogen injection increased engine power, but the combination of water vapor and hydrogen caused a drop in torque. Significant reductions in carbon monoxide and hydrocarbon emissions were observed, particularly with the steam/hydrogen mixture, while nitrogen oxide emissions were lowest with this mixture. Hydrogen injection reduced specific fuel consumption, while steam injection increased it. Exhaust temperatures increased with hydrogen injection and decreased with steam injection. The study showed a 3.48% increase in engine power with hydrogen injection and a 6.91% increase in efficiency at 1500 rpm with combined water vapor and hydrogen injection. A 6.4% reduction in specific fuel consumption up to 2000 rpm was also observed with this mixture. Nitrogen oxide emissions were lowest up to 1750 rpm with water vapor injection, while the combination of hydrogen and water vapor produced significant reductions at all engine speeds. Exhaust temperatures dropped to 596.3 °C with the hydrogen and water vapor mixture. These results indicate that the injection of hydrogen and water vapor is an effective method of improving the performance and emissions of diesel engines. © 2024 Hydrogen Energy Publications LLCen_US
dc.identifier.doi10.1016/j.ijhydene.2024.12.382
dc.identifier.issn0360-3199
dc.identifier.scopus2-s2.0-85213541716en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.ijhydene.2024.12.382
dc.identifier.urihttps://hdl.handle.net/11468/29861
dc.indekslendigikaynakScopus
dc.institutionauthorArpa, Orhan
dc.institutionauthorid0000-0001-8129-1548
dc.language.isoenen_US
dc.publisherElsevier Ltden_US
dc.relation.ispartofInternational Journal of Hydrogen Energyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.snmzKA_Scopus_20250222
dc.subjectDiesel engineen_US
dc.subjectEfficiencyen_US
dc.subjectEmission controlen_US
dc.subjectEngine performanceen_US
dc.subjectHydrogenen_US
dc.subjectWater vaporen_US
dc.titleEnhancing diesel engine efficiency and emission control: A study on hydrogen and water vapor injectionen_US
dc.typeArticleen_US

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