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汽车安全与节能学报 ›› 2012, Vol. 3 ›› Issue (3): 257-264.DOI: 10.3969/j.issn.1674-8484.2012.03.009

• 汽车节能与环保 • 上一篇    下一篇

燃用乙醇、汽油混合物和含水乙醇的GDI 发动机运行(英文)

Richard STONE, 陈龙飞, Nathan HINTON, Felix LEACH, 徐帆   

  1. 牛津大学 工程科学系,牛津 OX1 3PJ,英国
  • 收稿日期:2012-06-13 出版日期:2012-09-25 发布日期:2012-10-24
  • 作者简介:Richard Stone,Professor/ 教授。E-mail: Richard.stone@eng.ox.ac.uk
  • 基金资助:

    the Engineering and Physical Sciences Research Council and Jaguar Land Rover [UK];“ 凡舟”青年科研基金资助(20110404)

GDI Engine Operation with Ethanol/Gasoline Blends and Aqueous Ethanol

Richard STONE, Longfei CHEN, Nathan HINTON, Felix LEACH, Fan XU   

  1. Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, UK
  • Received:2012-06-13 Online:2012-09-25 Published:2012-10-24
  • About author:Richard Stone,Professor/ 教授。E-mail: Richard.stone@eng.ox.ac.uk
  • Supported by:

    the Engineering and Physical Sciences Research Council and Jaguar Land Rover [UK];“ 凡舟”青年科研基金资助(20110404)

摘要: 作为可再生燃料和改善能源安全的手段,乙醇被逐步推广使用。为研究含水的混合乙醇的燃
烧性能以及水与乙醇—汽油的溶混性,试验了含乙醇0~100%的汽油、乙醇混合物,评价了混合物的
喷雾特性、燃烧性能和颗粒物排放性能,进行了汽油、乙醇、水的三相图分析和试验。结果表明:
在含水量不大于40%时,汽油乙醇混合物中水的存在,不妨碍混合物用作汽油直喷发动机燃料。向
喷射汽油中加注乙醇,增大了喷射燃料的体积;以这种燃料注入并持续喷雾,尤其是在冷发动机情况
下,降低了混合物均匀性,减少了燃烧稳定性,对于当量比混合物,还增加了颗粒物的排放。向喷射
燃料的乙醇中加注水,在含水量不大于30%时,燃烧持续时间不明显增加,燃烧稳定性不明显减小。

关键词: 汽油直喷(GDI)发动机, 颗粒排放, 乙醇, 含水乙醇, 混合燃料, 喷油点火

Abstract: Ethanol is being promoted as a renewable fuel and as a means of improving energy security. The
blends of gasoline and ethanol from 0 – 100 % ethanol were studied to evaluate their spray characteristics,
combustion performances, and particulate emissions with blends of ethanol and water with up to 40 % water
by volume being tested to research the combustion performances of different water ethanol blends and the
miscibility of water with ethanol/gasoline blends using ternary phase diagrams for gasoline, ethanol, and water.
The results show that presence of water in ethanol/gasoline mixtures is not an impediment to their use as a fuel
in gasoline direct injection (GDI) engines. Adding ethanol to gasoline increases the injected fuel volume and the
persistence of the fuel sprays, especially for a cold engine, leads to reduced mixture homogeneity, a decrease
in the combustion stability, and an increase in particulate matter emissions for a stoichiometric mixture. Adding
water to ethanol further increases injected fuel volume, but the increase in combustion duration and reduction in
combustion stability are not significant with up to 30 % water by volume.

Key words: gasoline direct injection (GDI) engine, particulate emissions, blends, ethanol, aqueous ethanol, sprays combustion

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