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首页> 外文期刊>Energy Conversion & Management >Performance, combustion, and emission characteristics of a diesel engine fueled with Jatropha methyl ester and graphene oxide additives
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Performance, combustion, and emission characteristics of a diesel engine fueled with Jatropha methyl ester and graphene oxide additives

机译：装有麻疯树甲酯和氧化石墨烯添加剂的柴油发动机的性能，燃烧和排放特性

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摘要

The present experimental study aims at investigating the impact of adding graphene oxide nanoparticles (GO) to neat Jatropha Methyl Ester (JME) on a single cylinder air cooled direct injection four stroke diesel engine. The nano-fuels have been prepared from 25, 50, 75 and 100 mg/l concentrations of graphene oxide with neat Jatropha biodiesel through ultrasonication process. The graphene oxide nanoparticles crystallite size, morphology, and the chemical structures were examined using X-ray diffraction (XRD), Transmission Electron Microscope (TEM), and Fourier-transform infrared spectroscopy (FTIR), respectively. The compression ignition engine characteristics were investigated by the four JME-GO blends, and their results were compared with neat JME under various engine loads at a constant engine speed of 2000 rpm. The results indicate that the diesel engine operated by JME-GO nano-fuels enhanced the brake thermal efficiency by 17% compared to neat JME fuel. Furthermore, the peak cylinder pressure, the highest rate of pressure rise, and maximum heat release rate were also increased by 8%, 6%, and 6%, respectively. The CO and UHC emissions were decreased significantly by 60% and 50%, respectively, for JME-GO blends compared to pure JME fuel. At high engine load, the NOx emission was reduced by 15% for JME-GO blends compared to pure Jatropha biodiesel. The results also illustrated that the concentration of 50 mg/L had the optimum improvement in the overall characteristics of engine performance and emissions.
机译：本实验研究旨在研究将氧化石墨烯纳米颗粒（GO）添加到纯麻风树甲基酯（JME）对单缸风冷直喷四冲程柴油机的影响。通过超声处理，由浓度为25、50、75和100 mg / l的氧化石墨烯与纯净的麻风树属生物柴油制备了纳米燃料。分别使用X射线衍射（XRD），透射电子显微镜（TEM）和傅里叶变换红外光谱（FTIR）检查了氧化石墨烯纳米颗粒的晶粒尺寸，形态和化学结构。通过四种JME-GO混合物研究了压燃式发动机的特性，并将其结果与在2000 rpm的恒定发动机转速下各种发动机负载下的纯JME进行了比较。结果表明，与纯JME燃料相比，使用JME-GO纳米燃料运行的柴油发动机将制动热效率提高了17％。此外，峰值气缸压力，最高压力上升率和最大放热率也分别增加了8％，6％和6％。与纯JME燃料相比，JME-GO混合物的CO和UHC排放量分别显着降低了60％和50％。与纯麻风树生物柴油相比，在高发动机负荷下，JME-GO混合物的NOx排放降低了15％。结果还表明，浓度为50 mg / L时，发动机性能和排放的总体特征得到了最佳改善。

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