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Yazar: Aydın, Hüseyin × Konu: Diesel Engine ×

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    Combustion, performance and emissions of a diesel power generator fueled with biodiesel-kerosene and biodiesel-kerosene-diesel blends
    (Elsevier, 2017-02-05) Bayındır, Hasan; Işık, Mehmet Zerrakki; Argunhan, Zeki; Yücel, Halit Lütfi; Aydın, Hüseyin
    High percentages of biodiesel blends or neat biodiesel cannot be used in diesel engines due to high density and viscosity, and poor atomization properties that lead to some engine operational problems. Biodiesel was produced from canola oil by transesterification process. Test fuels were prepared by blending 80% of the biodiesel with 20% of kerosene (B80&K20) and 80% of the biodiesel with 10% of kerosene and 10% diesel fuel (B80&K10&D10). Fuels were used in a 4 cylinders diesel engine that was loaded with a generator. Combustion, performance and emission characteristics of the blend fuels and D2 in the diesel engine for certain loads of 3.6, 7.2 and 10.8 kW output power and 1500 rpm constant engine speed were experimented and deeply analyzed. It was found that kerosene contained blends had quite similar combustion characteristics with those of D2. Mass fuel consumption and Bscf were slightly increased for blend fuels. HC emissions slightly increased while NOx emissions considerably reduced for blends. It was resulted that high percentages of biodiesel can be a potential substitute for diesel fuel provided that it is used as blending fuel with certain amounts of kerosene.
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    Combined effects of thermal barrier coating and blending with diesel fuel on usability of vegetable oils in diesel engines
    (Elsevier, 2013) Aydın, Hüseyin
    The possibility of using pure vegetable oils in a thermally insulated diesel engine has been experimentally investigated. Initially, the standard diesel fuel was tested in the engine, as base experiment for comparison. Then the engine was thermally insulated by coating some parts of it, such as piston, exhaust and intake valves surfaces with zirconium oxide (ZrO2). The main purpose of engine coating was to reduce heat rejection from the walls of combustion chamber and to increase thermal efficiency and thus to increase performance of the engine that using vegetable oil blends. Another aim of the study was to improve the usability of pure vegetable oils in diesel engines without performing any fuel treatments such as pyrolysis, emulsification and transesterification. Pure inedible cottonseed oil and sunflower oil were blended with diesel fuel. Blends and diesel fuel were then tested in the coated diesel engine. Experimental results proved that the main purpose of this study was achieved as the engine performance parameters such as power and torque were increased with simultaneous decrease in fuel consumption (bsfc). Furthermore, exhaust emission parameters such as CO, HC, and Smoke opacity were decreased. Also, sunflower oil blends presented better performance and emission parameters than cottonseed oil blends.
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    Investigation of the usability of biodiesel obtained from residual frying oil in a diesel engine with thermal barrier coating
    (Journals & Books, 2015-04-05) Aydın, Hüseyin; Sayın, Cenk; Aydın, Selman
    In this study, biofuel was produced from residual frying oil of cottonseed and D2, B5 and B100 fuels were prepared in order to use in experiments. These fuels were tested in a single cylinder, four strokes, 3 LD 510 model Lombardini CI engine. Then the top surfaces of the piston and valves were coated with plasma spray coating method by using 100 μm of NiCrAl as lining layer and over this layer the same surfaces were coated with 400 μm of the mixture that consists of %88 ZrO2, %4 MgO and %8 Al2O3. After the coating process, above mentioned fuels were tested in the coated engine. Previously, same fuels had been tested in uncoated engine, at full load and various speeds. Performance, emission and combustion experiments were carried out in coated engine. By coating process, partial increases were observed in power, exhaust manifold temperature and engine noise, while partial decreases were seen in brake specific fuel consumption (Bsfc). Besides, partial reductions were found in carbon monoxide (CO), hydrocarbon (HC) and smoke opacity emissions, but partial increases were observed in nitrogen oxide (NOx) emissions. Cylinder gas pressure values were higher for coated engine. Moreover, heat releases were close to each other in both engines.
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    An analysis of biodiesel requirement, production and policies in Turkey
    (e-Journal of New World Sciences Academy, 2008-02-01) Aydın, Hüseyin; Bayındır, Hasan
    The development of alternative fuels from renewable resources, like biomass, has gained considerable attention in recent years. A biodiesel program would give many benefits in terms of generation of employment for poor/rural people, farmers, accelerate of starting many type of industries for developing countries like Turkey. This paper investigates current status of biodiesel in Turkey, advantages and disadvantages of biodiesel in diesel engines, annual diesel fuel consumption, import and export ratings and annual diesel fuel demand. The main focus of this paper is on Turkey’s current fuel status and to clarify Turkey’s biodiesel demand as alternative to fossil diesel fuel. Results show that Turkey is highly in need of alternative energies such as bio-fuels. That’s way it is recommended that Turkey should promote oilseed crops farming to the rise production of biodiesel.
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    Performance and emission analysis of cottonseed oil methyl ester in a diesel engine
    (Elsevier, 2010-03) Aydın, Hüseyin; Bayındır, Hasan
    In this study, performance and emissions of cottonseed oil methyl ester in a diesel engine was experimentally investigated. For the study, cottonseed oil methyl ester (CSOME) was added to diesel fuel, numbered D2, by volume of 5%(B5), 20%(B20), 50%(B50) and 75%(B75) as well as pure CSOME (B100). Fuels were tested in a single cylinder, direct injection, air cooled diesel engine. The effects of CSOME-diesel blends on engine performance and exhaust emissions were examined at various engine speeds and full loaded engine. The effect of B5, B20, B50, B75, B100 and D2 on the engine power, engine torque, bsfc's and exhaust gasses temperature were clarified by the performance tests. The influences of blends on CO, NOx, SO2 and smoke opacity were investigated by emission tests. The experimental results showed that the use of the lower blends (B5) slightly increases the engine torque at medium and higher speeds in compression ignition engines. However, there were no significant differences in performance values of B5, B20 and diesel fuel. Also with the increase of the biodiesel in blends, the exhaust emissions were reduced. The experimental results showed that the lower contents of CSOME in the blends can partially be substituted for the diesel fuel without any modifications in diesel engines.
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    Performance and emission evaluation of a CI engine fueled with preheated raw rapeseed oil (RRO)–diesel blends
    (Journals & Books, 2010-03) Aydın, Hüseyin; Hanbey, Hazar
    Many studies are still being carried out to find out surplus information about how vegetable based oils can efficiently be used in compression ignition engines. Raw rapeseed oil (RRO) was used as blended with diesel fuel (DF) by 50% oil–50% diesel fuel in volume (O50) also as blended with diesel fuel by 20% oil–80% diesel fuel in volume (O20). The test fuels were used in a single cylinder, four stroke, naturally aspirated, direct injection compression ignition engine. The effects of fuel preheating to 100 °C on the engine performance and emission characteristics of a CI engine fueled with rapeseed oil diesel blends were clarified. Results showed that preheating of RRO was lowered RRO’s viscosity and provided smooth fuel flow Heating is necessary for smooth flow and to avoid fuel filter clogging. It can be achieved by heating RRO to 100 °C. It can also be concluded that preheating of the fuel have some positive effects on engine performance and emissions when operating with vegetable oil.
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    Determination of performance and exhaust emissions properties of B75 in a CI engine application
    (Journals & Books, 2011-09) Aydın, Hüseyin; İlkılıç, Cumali
    In 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.
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    Biyodizelin hava kirliliğine etkisi
    (Batman Üniversitesi, 2012-06-01) Aydın, Hüseyin; Aydın, Selman; İlkılıç, Cumali
    Bu çalışmada aspir yağından transesterifikasyon (yağın yeniden esterleştirmesi) yöntemi ile biyodizel üretilmiştir. %20 aspir biyodizeli %80 dizel karışımlı yakıt ile normal dizel yakıtı (D2) tek silindirli, dört zamanlı, direkt püskürtmeli ve hava soğutmalı bir dizel motorunda kullanılarak egzoz emisyonları karşılaştırmalı olarak incelendi. Yakıtların test sonuçları karşılaştırıldığında aspir yağı metil esterinin dizel yakıtına göre NOx ve O2 emisyonlarında artış HC, CO2 ve CO emisyonlarında ise azalmalar görülmüştür. Motor emisyonlarında metil ester karışımı (B80) genel itibari ile çevre açısından daha az zararlı olduğu görülmüştür.
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    The effects of apricots seed oil biodiesel with some additives on performance and emissions of a diesel engine
    (International Journal of Automotive Engineering and Technologies, 2016) Aydın, Hüseyin; Hanbey, Hazar; Uyar, Mahmut; Şap, Emine
    The purpose of this experimental work is to investigate influences of using manganese (Mn) as a combustion catalysts on apricot seed oil based biodiesel production and its engine out parameters. The metal based additive (Mn) was added to biodiesel (B50) at different dosages of 20-40-60 μmol/L. Also, other additives the propylene glycol and dodecanol were added into apricot seed oil biodiesel (B50) at rates of 5% and 1%, respectively for preparing test fuels.This additives improved flash point, pour point and viscosity of the biodiesel (B50) fuel. Experiments were carried out to clarify the effects of all additives added to biodiesel on performance and emission characteristics of a three-cylinder DI diesel engine operated at a constant speed of 1500 rpm and different loads from 2,50 to 10 kW. The engine test results revealed that specific fuel consumption, NOx were not changed significantly with the adding additives to biodiesel (B50) fuel, while CO, HC and smoke emission profiles were improved.
  • Küçük Resim
    Öğe
    Exhaust emissions of a CI engine operated with biodiesel from rapeseed oil
    (Taylor & Francis, 2011-01-16) Aydın, Hüseyin; İlkılıç, Cumali
    In this study, biodiesel was produced from rapeseed oil and was used in a single cylinder, naturally aspirated and direct-injected diesel engine as pure biodiesel (B100) and as a blend with standard diesel fuel by 20% biodiesel to 80% diesel fuel (B20). The diesel engine emissions and some performance parameters were investigated at fully loaded engine conditions. The effects of pure biodiesel and its blend with diesel fuel on emissions of carbon monoxide (CO), nitrogen oxides (NOx), carbon dioxide (CO2), and sulfur dioxide (SO2) were clarified. Results showed that biodiesel fuel is environmentally friendly since it reduced the emissions of CO, SO 2, and CO2 of engines at all speeds. Results also indicated that the pure biodiesel gave about 12% lower power and 20 to 25% higher fuel consumption as compared to diesel. However, the results were almost the same or slightly different from a blend of biodiesel-diesel and petroleum diesel fuel.