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Öğe Determination of performance and exhaust emissions properties of B75 in a CI engine application(Journals & Books, 2011-09) Aydın, Hüseyin; İlkılıç, CumaliIn this study, performance and exhaust emissions of biodiesel in a compression ignition engine was experimentally investigated. Therefore, biodiesel has been made by transesterification from cotton seed oil and then it was mixed with diesel fuel by 25% volumetrically, called here as B75 fuel. B75 fuel was tested, as alternative fuel, in a single cylinder, four strokes, and air-cooled diesel engine. The effect of B75 and diesel fuels on the engine power, engine torque and break specific fuel consumption were clarified by the performance tests. The influences of B75 fuel on CO, HC, NOx, Smoke opacity, CO2, and O2 emissions were investigated by emission tests. The engine torque and power, for B75 fuel, were lower than that of diesel fuel in range of 2–3%. However, for the B75, specific fuel consumption was higher than that of diesel fuel by approximately 3%. CO2, CO, HC, smoke opacity and NOx emissions of B75 fuel were lower than that of diesel fuel. The experimental results showed that B75 fuel can be substituted for the diesel fuel without any modifications in diesel engines.Öğe Terebinth oil for biodiesel production and its diesel engine application(Journals & Books, 2015-08) Aydın, Hüseyin; İlkılıç, Cumali; Çılğın, ErdalIn this study, biodiesel was produced from terebinth oil by the well known transesterification process in the methyl alcohol environment. Terebinth is non-edible oil, thus food versus fuel conflict will not arise if this is used for biodiesel production. The optimum conditions of transesterification process for biodiesel production are investigated in this study. A maximum of 77% biodiesel was produced with 20% methanol in presence of 1% sulphuric acid (H2SO4). The resulting biodiesel is quite similar to conventional diesel fuel in its main characteristics. The obtained biodiesel from terebinth oil was added to diesel fuel volumetrically by 10% and 50%. The fuel mixtures that obtained from the addition of 10% and 50% of biodiesel were named here as B10 fuel and B50 fuel. Performance and exhaust emissions of biodiesel in a compression ignition engine were experimentally investigated. Biodiesel blends have lowered power output with increased brake specific fuel consumption (Bsfc) probably due to the lower heating value of biodiesel. The engine experimental results showed that exhaust emissions including carbon monoxide (CO), carbon dioxide (CO2), and hydrocarbons (HC) were reduced for all biodiesel fuel mixtures. However, a slight increase in oxides of nitrogen (NOx) emission was experienced for biodiesel mixtures.Öğe Performance and emission characteristics of a diesel engine fueled with biodiesel obtained from a hybrid feedstock(Energy Education Science and Technology Part A: Energy Science and Research, 2011-04) Altun, ŞehmusVegetable oils and animal fats are widely investigated as a alternative fuel for diesel engines because of their high cetane number. However, animal fats are highly viscous and mostly in solid form at ambient temperature that they need modifications before using them in diesel engines. Pre-heated, blending, transesterification and emulsification are well known to improve usage of animal fats in diesel engines. In this study, biodiesel was produced from a hybrid feedstock (60% crude canola oil/40% inedible animal tallow) by transesterification and tested in a DI diesel engine for determining exhaust emissions and comparing those of biodiesel from pure animal tallow. Biodiesel fuels were tested as blends in diesel fuel (50% biodiesel and 50% diesel fuel). The experimental results show that, compared with animal tallow biodiesel blend, hybrid feedstock biodiesel blend has higher viscosity, density, brake specific fuel consumption, CO and NO x emissions and a lower cetane number, brake thermal efficiency.Öğe Seramik kaplı bir dizel motorunda biyodizel kullanımının emisyon parametrelerine etkisinin deneysel olarak araştırılması(Makine Teknolojileri Elektronik Dergisi, 2015) Aydın, Hüseyin; Sayın, Cenk; Aydın, Selman; İşcan, Bahattin; Işık, Mehmet ZerakkiBu çalışmada, dört silindirli, dört zamanlı bir dizel motor plazma sprey yöntemi ile 100 μm NiCrAl astar tabaka ve bu tabakanın üzerine 400 μm olmak üzere ZrO2 , %4 MgO ve %8 Al2O3 ana kaplama malzemesi ile kaplanmıştır. Bu motorda, seramik kaplama yönteminin yanma ve emisyon parametreleri üzerindeki etkileri araştırılmıştır. Deneysel çalışmalarda kullanılmak üzere pamuk yağı kökenli atık kızartma yağından üretilen biyodizel, dizel yakıtı ile %20 ve %50 oranında karıştırılarak sırası ile (B20) ve (B50) yakıtları oluşturulmuştur. Bu yakıtlar ile normal dizel (D2) yakıtı motor testlerinde kullanılmıştır. Deneyler kısmi yükte olmak üzere emisyon değerleri için 1200, 1500, 1800, 2100 ve 2400 dev/dk’da gerçekleştirilmiştir. Deneysel çalışma sırası ile D2, B20 ve B50 yakıtları ile önce kaplanmamış motorla egzoz emisyonları değerleri alınmıştır. Çalışma boyunca elde edilen sonuçlar ve belirgin avantajlar burada sunulmuştur
