Yazar "Kahraman, Ali" seçeneğine göre listele

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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.