...
首页> 外文期刊>Fuel >Effect of biodiesel and ethanol on load limits of high-efficiency premixed low-temperature combustion in a diesel engine
【24h】

Effect of biodiesel and ethanol on load limits of high-efficiency premixed low-temperature combustion in a diesel engine

机译:生物柴油和乙醇对柴油机高效预混低温燃烧负荷极限的影响

获取原文
获取原文并翻译 | 示例
           

摘要

The fuel effect of diesel, biodiesel and biodiesel-ethanol on load limits of high-efficiency premixed low temperature combustion (LTC), defined by nitrogen oxides (NO_χ) ≤ 1 g/kg-fuel, smoke ≤0.5 filter smoke number (FSN) and combustion efficiency > 96%, is investigated using a diesel engine in this study. Low load operation range is limited by a drop in combustion efficiency for all three test fuels. High load operation range is limited by a sharp increase in smoke with diesel fuel. Biodiesel produces lower smoke at high load but still exceed the limit of 0.5 FSN. Unlike diesel and biodiesel, smoke is no longer the limiting factor for high load operation with biodiesel-ethanol fuel. A blend of 20% ethanol in biodiesel results in ultra-low smoke emission (maximum FSN less than 0.25), which is thought to be caused by the joint effects of better fuel air mixing and higher fuel oxygen fraction. Since the high load operating limit of biodiesel-ethanol is caused by a drop in combustion efficiency and not smoke as for the other fuels, biodiesel-ethanol was used to further extend the LTC load limits at a higher boosting pressure. When intake pressure is increased from 120 to 150 kPa, biodiesel-ethanol still demonstrates ultra-low smoke, and its high-efficiency LTC operating range is extended from 0.40-0.65 to 0.35-0.82 MPa indicated mean effective pressure (IMEP).
机译:柴油,生物柴油和生物柴油-乙醇对高效预混低温燃烧(LTC)负荷极限的燃料效应,其定义为氮氧化物(NO_χ)≤1 g / kg燃料,烟气≤0.5过滤器烟气量(FSN)在本研究中,使用柴油机对燃烧效率> 96%的情况进行了研究。所有三种测试燃料的燃烧效率下降都限制了低负荷运行范围。高负荷运行范围受到柴油中烟气急剧增加的限制。生物柴油在高负荷下产生的烟雾较少,但仍超过0.5 FSN的极限。与柴油和生物柴油不同,烟雾不再是生物柴油-乙醇燃料高负荷运行的限制因素。在生物柴油中掺混20%的乙醇会产生极低的烟雾排放(最大FSN小于0.25),这被认为是由于更好的燃油空气混合和更高的燃油氧气含量共同造成的。由于生物柴油-乙醇的高负荷运行极限是由于燃烧效率下降而不是像其他燃料那样会冒烟而引起的,因此生物柴油-乙醇被用来在更高的增压压力下进一步扩展LTC负荷极限。当进气压力从120 kPa增加到150 kPa时,生物柴油-乙醇仍显示出超低烟雾,其高效LTC操作范围从0.40-0.65扩展到0.35-0.82 MPa,指示平均有效压力(IMEP)。

著录项

  • 来源
    《Fuel》 |2013年第4期|773-778|共6页
  • 作者单位

    Key Laboratory of Power Machinery and Engineering, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200246, China,Walter E. Lay Automotive Laboratory, Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA;

    Walter E. Lay Automotive Laboratory, Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA;

    Walter E. Lay Automotive Laboratory, Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA;

    Walter E. Lay Automotive Laboratory, Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA;

    Key Laboratory of Power Machinery and Engineering, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200246, China;

    Walter E. Lay Automotive Laboratory, Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA,Office of the Provost, Stony Brook University, Stony Brook, NY 11794, USA;

  • 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; ethanol; load limit; high-efficiency; low temperature combustion;

    机译:生物柴油乙醇负荷极限高效率;低温燃烧;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号