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首页> 外文期刊>Fuel >Experimental investigation of diesel engine performance and emission characteristics using jojoba/diesel blend and sunflower oil
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Experimental investigation of diesel engine performance and emission characteristics using jojoba/diesel blend and sunflower oil

机译：荷荷巴/柴油和葵花籽油对柴油机性能和排放特性的实验研究

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摘要

Experimental study has been carried out to investigate performance parameters, emissions, cylinder pressure, exhaust gas temperature (T_(exhaust)) and engine wall temperatures (T_(wan)) for direct injection diesel engine. Tests were conducted for sunflower oil (S100) and 20% jojoba oil + 80% pure diesel fuel (B20) in comparison to pure diesel fuel with different engine speeds. S100 and B20 were selected for the study because of its being widely used in Egypt and in the world. Also, series of tests are conducted at same previous conditions with different percentage of exhaust gas recirculation (EGR) from 0% to 12% of inlet mass of air fresh charge. Results indicate that S100 or B20 gives lower brake thermal efficiency (ηb), brake power (BP), brake mean effective pressure (BMEP), and higher brake specific fuel consumption (BSFC) due to lower heating value compared to pure diesel fuel. S100 or B20 gives lower NO_x concentration due to lower gas temperature. S100 or B20 gives higher T_(wan) and T_(exhaust) due to incomplete combustion inside engine cylinder. S100 or B20 gives higher CO and CO_2 concentrations due to higher carbon/hydrogen ratio. The position of maximum pressure (P_(max)) change for pure diesel fuel is earlier than for S100 or B20. The results show that S100 or B20 are promising as alternative fuel for diesel engine. The utilization of vegetable oils does not require a significant modification of existing engines. This can be seen as the main advantage of vegetable oils. The main disadvantages of biodiesel fuels are high viscosity, drying with time, thickening in cold conditions, flow and atomization characteristics.
机译：已经进行了实验研究以研究直喷式柴油机的性能参数，排放，气缸压力，排气温度（T_（排气））和发动机壁温度（T_（wan））。与不同发动机转速的纯柴油相比，对葵花籽油（S100）和20％霍霍巴油+ 80％纯柴油（B20）进行了测试。选择S100和B20是因为该研究已在埃及和世界范围内广泛使用。同样，在相同的先前条件下进行了一系列测试，其中废气再循环（EGR）的百分比不同，新鲜空气进气量的0％至12％。结果表明，由于S100或B20的发热量低于纯柴油，因此其制动热效率（ηb），制动功率（BP），制动平均有效压力（BMEP）和制动比燃料消耗量（BSFC）较低。由于气体温度较低，S100或B20的NO_x浓度较低。由于发动机气缸内燃烧不完全，S100或B20给出较高的T_（wan）和T_（排气）。由于较高的碳氢比，S100或B20会产生较高的CO和CO_2浓度。纯柴油的最大压力（P_（max））变化位置早于S100或B20。结果表明，S100或B20有望作为柴油发动机的替代燃料。植物油的利用不需要对现有发动机进行重大改动。这可以看作是植物油的主要优势。生物柴油燃料的主要缺点是粘度高，随时间干燥，在寒冷条件下会增稠，流动和雾化特性。

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  • 来源
    《Fuel》 |2011年第2期|p.886-897|共12页
  • 作者

    M.S. Shehata; S.M. Abdel Razek;

  • 作者单位

    Mechanical Engineering Technology Department, Higher Institute of Technology, Benha University, Egypt;

    Industrial Engineering Department, Faculty of Engineering, Miser University for Science and Technology, 6th October City, Egypt;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    biodiesel fuel; performance; emission; EGR;

    机译：生物柴油燃料;性能;发射;废气再循环;

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