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Öğe 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, SelmanIn 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.Öğe An analysis of biodiesel requirement, production and policies in Turkey(e-Journal of New World Sciences Academy, 2008-02-01) Aydın, Hüseyin; Bayındır, HasanThe 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.Öğe Performance and emission evaluation of a CI engine fueled with preheated raw rapeseed oil (RRO)–diesel blends(Journals & Books, 2010-03) Aydın, Hüseyin; Hanbey, HazarMany 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.Öğe Farklı tozlarla yanma odası yüzeyleri termal yalıtılmış bir dizel motorunda biyoyakıt kullanımının yalıtım malzemesi ve motor parçaları üzerindeki etkileri(Batman Üniversitesi, 2016) Aydın, Selman; Sayın, Cenk; Kılıç, MusaBu çalışmada, plazma püskürtme yöntemiyle farklı tozlarla yanma odası yüzeyi yalıtılmış bir dizel motorunda, uzun bir çalışmadan sonra kaplama tabakasının mikroyapı analizi ve çalışma performansına etkileri incelenmiştir. İlk önce motorun yanma odasına bakan piston ve supaplarının alın yüzeyleri, motorun sıkıştırma oranı değişmeyecek şekilde, plazma sprey yöntemi ile 100 μm kadar NiCrAl astar tabaka ve bu tabakanın üzerine 400 μm olmak üzere %88 ZrO2, %4 MgO ve %8 Al2O3 ana kaplama malzemesi ile kaplanmıştır. Daha sonra yalıtılmış bu dizel motorda 1800 d/d’da ve biyoyakıt ile uzun süre çalıştırılarak biyoyakıtın motor parçaları ve termal bariyerle kaplanmış malzeme üzerindeki etkileri incelenmiştir. Çalışma sonucunda, yanma odası parçalarının plazma püskürtme yöntemi ile kaplanabilirliği, piston ve supapların verimliliğini arttırabildiği tespit edilmiştir. Ayrıca, makroyapı ve SEM (Taramalı Elektron Mikroskobu) incelemeleri sonucunda tabakalar arası bağlanmanın iyi bir şekilde gerçekleştiği, kaplama tabakasında hiçbir gözenek ve çatlak gibi süreksizlerin oluşmadığı görülmüştür.Öğe Bir dizel motorda hint yağı biyodizeli ve dietil eter kullanımının motor performansına ve emisyonlara etkisinin araştırılması(Batman Üniversitesi Fen Bilimleri Enstitüsü, 2017-12-27) Azi, Hüseyin; İşcan, BahattinEnerjiye duyulan ihtiyaç, dünyadaki hızlı nüfus artışı ve teknolojik gelişmelere bağlı olarak artmaktadır. Motorlu taşıtlardan kaynaklanan zararlı emisyonların önemli bir çevre sorunu haline gelmesi, kullanılan enerji rezervlerin yakın bir tarihte (2050) bitecek olması araştırmacıları alternatif yakıtlara yöneltmiştir. Alkoller, yağlardan elde edilen biyodizel yakıtı alternatif dizel yakıtları olarak kullanılabilmektedir. Bu çalışmada dietil eter ilaveli hint yağı biyodizeli hacimsel olarak farklı oranlarda dizel yakıtı ile karıştırılarak dizel motorunda analizi gerçekleştirilmiştir. Transesterifikasyon yöntemiyle hint yağından biyodizel elde edilmiş ve dietil eter ile hacimce %10 ve %20 oranında karışımlar hazırlanmıştır. D100, B100, D50B50, B90DEE10, B80DEE20, D45B45DEE10 ve D40B40DEE20 (%40 dizel, %40 biyodizel ve %20 dietil eter) içerdikleri yakıt oranlarına göre isimlendirilmiştir. Deneyler dört zamanlı, üç silindirli bir dizel motorunda sabit devirde ve değişken (boşta-3kw-5kw-7kw) yük şartlarında yapılmıştır. Yapılan deneysel çalışma sonucunda bu yakıtların kullanımından emisyon ve performans paremetlerindeki değişimler ortaya konulmuştur. Deneysel sonuçlara göre; dizel yakıtına oranla (analizler için referans yakıtı dizel yakıttır) tüm yüklerde özgül yakıt tüketimi%5,4 ile %29,4 oranları arasında artmıştır, ısıl verimi en yüksek yakıt hint yağı biyodizeli olmuştur, %0,3 ve %1,7 arasında değişen bir iyileşme gerçekleşmiştir. Egzoz gazı sıcaklığında düşüşler gerçekleşmiştir, kütlesel yakıt tüketimi %5,4 ile %29,3oranları arasında artmıştır. CO emisyonları yüksek çıkmıştır, CO2 emisyonları birbirine yakın değerler vermiştir. HC emisyonları artmıştır, yük arttıkça yüksek olan duman emisyonları azalmıştır. Yük arttıkça NOxemisyon değerleri artmıştır.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 Biyodizelin hava kirliliğine etkisi(Batman Üniversitesi, 2012-06-01) Aydın, Hüseyin; Aydın, Selman; İlkılıç, CumaliBu 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.Öğe 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, EmineThe 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.Öğe Analysis of combustion characteristics of a LHR-STD diesel engine fuelled with biofuel and diesel fuel((SSRG-IJTE), 2017-04) Aydın, Hüseyin; Aydın, Selman; Sayın, Cenk; Yakut, RıfatIt is important to efficiently use of alternative fuel in CI (compression ignition) engine, because of the lack of energy shortages will be in the present and coming years. Therefore this study, the top surfaces of the piston, exhaust and inlet valves of a four-stroke, direct injection, single cylinder CI engine was coated with a mixture of insulation materials by use of plasma spray method. After that, determine of combustion characteristics of standard (STD) CI engine and the low heat rejection (LHR) CI engine were tested under the same experimental conditions and the same experimental setup, fuelled with the WB20, WB100 and DF fuels. The results of both engines are compared with each other so that analyze how this modification is effect on the combustion parameters. Experimental results showed that LHR diesel engine generally is partly similar to STD diesel engine in terms of the knock density, mass burning rate, average gas temperature, velocity of heat transfer, coefficient of heat transfer and total heat transfer.Öğe Investigation of the effects of butanol addition on safflower biodiesel usage as fuel in a generator diesel engine(Elsevier, 2018-06-15) Aydın, Hüseyin; Çelebi, YahyaAs our world demands more and more energy and fossil fuel resources are running out, searches onfindingalternative fuels in internal combustion engines are increasing. Alcohols and biofuels obtained from oils can beused as alternative diesel fuels. The present work investigated the effects ofn-butanol addition to safflowerbiodiesel usage in a diesel engine used for driving an electrical power generator. Safflower biodiesel was ob-tained by using transesterification method. Binary blends of butanol-biodiesel and ternary blends of ultra-lowsulfur diesel-biodiesel–butanol were contained 5%, 10%, and 20% butanol in volume basis. The tests werecarried out on a four-cylinder, four-strokes, and direct-injection diesel engine at half load operation with stableengine speed of 1500 rpm. Experimental test results on combustion characteristics, emission and performance ofthe fuels were investigated. According to test results, formation of heat release rates and in-cylinder pressurecurves were considerably similar and total heat transfer, average gas temperature and mass fraction burned wereslightly changed. The ternary blends showed lower emission and increased brake thermal efficiency up to 1.5%.Besides, average mass fuel consumption was increased up to 5% and brake specific fuel consumption up to 6%.For the other fuels, emission and brake thermal efficiency were deteriorated.
