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Öğe Aspir ve kanola biyodizeli kullanımının egzoz emisyonu ve motor performansına etkilerinin incelenmesi(Küresel Mühendislik Çalışmaları Dergisi, 2016-04-01) Aydın, Hüseyin; Işık, Mehmet Zerrakki; Ziyadanoğulları Budak, Neşe; Oktay, Hasan; Bayındır, Hasan; Yücel, Halit LutfiBiodiesel fuel, which can be produced from crude or waste vegetable oil, is an important alternative renewable fuel for diesel engines. Particularly the use of vegetable oils for diesel engines has found an important place in several surveys. Biodiesel can be used alone, or blended with petrodiesel in any proportions. Biodiesel is suitable for usage at conventional diesel engines without modification. In this study, canola and safflower oil biodiesel methyl is realized by using the esterification method.. The produced biodiesels were blended in %(50) (in volume) with diesel fuel. The blends were tested in a four cycle, four cylinder Diesel engine. The effects of biodiesel addition to Diesel No. 2 on the performance and emissions of the engine were examined at full load. The resulting performance values were found to be similar to diesel fuel. In general, specific fuel consumption of biodiesel is higher than diesel at all engine loads. Significant difference between the exhaust temperature is not determined. AB50 biodiesel compared to diesel HC emissions at high loads began to decline. NOx, CO2 and O2 emissions ratio has increased at high loads for Biodiesel fuels. Experimental results showed that the produced biodiesels can be partially substituted for the diesel fuel at most operating conditions in terms of the performance parameters and emissions without any engine modification and preheating of the blends.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.
