Yazar "Ciniviz, Murat" seçeneğine göre listele

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    Effect of cetane improver addition into diesel fuel methanol mixtures on performance and emissions at different ınjection pressures
    (Vınca Inst Nuclear Scı, 2017) Candan, Feyyaz; Ciniviz, Murat; Örs, İlker
    In this study, methanol in ratios of 5-10-15% were incorporated into diesel fuel with the aim of reducing harmful exhaust gasses of Diesel engine, di-tertbutyl peroxide as cetane improver in a ratio of 1% was added into mixture fuels in order to reduce negative effects of methanol on engine pelformance parameters, and isobutanol of a ratio of 1% was used as additive for preventing phase separation of all mixtures: results of experiments conducted on a single cylinder and direct injection Diesel engine, methanol caused the increase of NOx emission while reducing CO, HC, CO2, and smoke opacity emissions. It also reduced torque and power values, and increased brake specific fuel consumption values. Cetane improver increased torque and power values slightly compared to methanol-mixed fuels, and reduced brake specific fuel consumption values. It also affected exhaust emission values positively, excluding smoke opacity. Increase of injector injection pressure affected performances of methanol-mixed fuels positively. It also increased injection pressure and NOx emissions, while reducing other exhaust emissions.
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    Performance, emission, and combustion analysis of a compression ignition engine using biofuel blends
    (Serbian Society of Heat Transfer Engineers, 2017) Örs, İlker; Kahraman, Ali; Ciniviz, Murat
    This study aimed to investigate the effects on performance, emission, and combustion characteristics of adding biodiesel and bioethanol to diesel fuel. Diesel fuel and blend fuels were tested in a water-cooled compression ignition engine with direct injection. Test results showed that brake specific fuel consumption and volumetric efficiency increased by about 30.6% and 3.7%, respectively, with the addition of bioethanol to binary blend fuels. The results of the blend fuel's combustion analysis were similar to the diesel fuel's results. Bioethanol increased maximal in-cylinder pressure compared to biodiesel and diesel fuel at both 1400 rpm and 2800 rpm. Emissions of CO increased by an amount of about 80% for fuels containing a high level of bioethanol when compared to CO emissions for diesel fuel. Using biodiesel, NO emissions increased by an average of 31.3%, HC emissions decreased by an average of 39.25%, and smoke opacity decreased by an average of 6.5% when compared with diesel fuel. In addition, when using bioethanol, NO emissions and smoke opacity decreased by 55% and 17% on average, respectively, and HC emissions increased by an average of 53% compared with diesel fuel. © 2017 Society of Thermal Engineers of Serbia.
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    The effect on performance and exhaust emissions of adding cotton oil methyl ester to diesel fuel
    (Korea Society of Automotive Engineers Kore / Otomotiv Mühendisleri Derneği, 2016) Kahraman, Ali; Ciniviz, Murat; Örs, İlker; Oğuz, Hidayet
    In the study, engine performance and exhaust emissions of diesel fuel and cotton oil methyl ester (COME) blends at proportions of 2%, %5 and 10% (v/v) have been investigated. The engine was fuelled with COME-diesel blends and pure diesel when running the engine at six different engine speed (1000, 1200, 1400, 1600, 1800, 2000 rpm) and at full load. Test results are presented engine torque and specific fuel consumption (SCF) as engine performance, and Carbon monoxide (CO), Hydrocarbon (HC), smoke and nitrogen oxides (NOx) as exhaust emissions. As result, this study is show that although engine performance decreased with COME adding to diesel fuel, exhaust emissions was generally improved.
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    The effect on vehicle performance and exhaust emissions of gasoline – ethanol blend which is high ethanol rate
    (Tarım Makinaları Derneği, 2012) Örs, İlker; Ciniviz, Murat; Köse, Hüseyin
    In this study, the effects of blending gasoline and ethanol which will probably be consumed as an alternative for gasoline in the future on wheel power, CO, HC, NOx and CO2 emissions were examined at spark ignition engines, at vehicles with electronic ignition system and injection fuel system. As fuel, gasoline-ethanol blend with a %85 ethanol were used. According to the results of the experiment, wheel power was decreased. Fuel consumption was increased. In case exhaust emissions, CO, CO2 and NOx emissions were decreased, HC emission was increased.