Performance, emission, energy, and exergy assessment of gasoline–1-decanol, gasoline–dipe, and JP-8 fuels toward sustainable two-stroke uav propulsion

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dc.authorid0000-0001-7383-1428
dc.authorid0000-0002-2328-5809
dc.authorid0000-0002-6968-8734
dc.authorid0000-0002-5212-0966
dc.contributor.authorDemir, Usame
dc.contributor.authorGülcan, Halil Erdi
dc.contributor.authorÖzer, Salih
dc.contributor.authorTunçer, Erdal
dc.date.accessioned2026-10-23T11:28:23Z
dc.date.available2026-10-23T11:28:23Z
dc.date.issued2026
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Makine Mühendisliği Bölümü
dc.description.abstractThis study experimentally investigates the performance, emission, energy, and exergy characteristics of six fuels in a two-cylinder, air-cooled, two-stroke unmanned aerial vehicle (UAV) engine, using neat gasoline (G100) as the reference fuel. The test matrix comprised G100, neat JP-8, gasoline–1-decanol blends containing 10 and 20 vol.% decanol (G90D10 and G80D20), and gasoline–diisopropyl ether blends containing 10 and 20 vol.% DIPE (G90E10 and G80E20). Experiments were conducted at shaft speeds of 3250, 3750, 4500, 5250, and 6250 rpm under matched speed–load conditions. Fuel consumption, exhaust-gas temperature, excess-air ratio, gaseous emissions, and first- and second-law thermodynamic performance were evaluated. The inclusion of G100 enabled the effects of the oxygenated additives to be quantified directly. At 5250 rpm, G90E10 reduced BSFC by 0.73% relative to G100 while increasing energy and exergy efficiencies by 1.69% and 1.61%, respectively. G80E20 produced larger reductions in brake-specific CO and HC emissions, 6.63% and 14.58%, respectively, and increased energy and exergy efficiencies by 2.43% and 2.27%, respectively, although both DIPE blends increased NOx. In contrast, increasing the decanol fraction increased BSFC and reduced thermodynamic efficiency relative to G100 despite moderate reductions in CO. JP-8 showed the strongest operating-point dependence; at 5250 rpm its BSFC was 9.52% lower than G100 and its energy and exergy efficiencies were 12.33% and 12.84% higher, respectively, whereas its advantage diminished markedly at the highest speed. Overall, the results demonstrate that oxygenate type and concentration produce distinct trade-offs between fuel utilization and gaseous emissions, while the suitability of JP-8 for gasoline-oriented two-stroke UAV propulsion is strongly dependent on operating conditions. From an operational-sustainability perspective, the results show that improvements in fuel utilization and incomplete-combustion emissions are strongly fuel and operating-point dependent. However, fuel production pathways, life-cycle greenhouse-gas emissions, durability, economic impacts, and mission-level environmental effects were outside the scope of this study and should be addressed before broader sustainability conclusions are drawn.
dc.identifier.citationDemir, U., Gülcan, H. E., Özer, S., & Tunçer, E. (2026). Performance, emission, energy, and exergy assessment of gasoline–1-decanol, gasoline–dipe, and JP-8 fuels toward sustainable two-stroke uav propulsion. Sustainability, 18(20), pp. 1-32. https://doi.org/10.3390/su182010466
dc.identifier.doi10.3390/su182010466
dc.identifier.endpage32
dc.identifier.issn2071-1050
dc.identifier.issue20
dc.identifier.scopusqualityQ1
dc.identifier.startpage1
dc.identifier.urihttps://doi.org/10.3390/su182010466
dc.identifier.urihttps://hdl.handle.net/20.500.13055/1680
dc.identifier.volume18
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.indekslendigikaynak.otherSCI-E - Science Citation Index Expanded
dc.indekslendigikaynak.otherSSCI - Social Science Citation Index
dc.institutionauthorTunçer, Erdal
dc.institutionauthorid0000-0002-5212-0966
dc.language.isoen
dc.publisherMDPI Publishing
dc.relation.ispartofSustainability
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectTwo-Stroke UAV Engine
dc.subjectJP-8
dc.subjectDiisopropyl Ether
dc.subject1-Decanol
dc.subjectEnergy Analysis
dc.subjectExergy Analysis
dc.subjectSustainable UAV Engine
dc.titlePerformance, emission, energy, and exergy assessment of gasoline–1-decanol, gasoline–dipe, and JP-8 fuels toward sustainable two-stroke uav propulsion
dc.typeArticle
dspace.entity.typePublication

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