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Investigation on the cold start characteristics of a hydrogen-enriched methanol engine

机译：富氢甲醇发动机冷启动特性的研究

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摘要

This paper experimentally investigated the effect of hydrogen addition on the cold start performance of a methanol engine. The test was conducted on a modified four-cylinder gasoline engine. An electronically controlled hydrogen injection system was applied to realize the hydrogen port injection. The engine was started at an ambient temperature of 25 ℃ with two hydrogen flow rates of 0 and 189 dm~3/s, respectively. The results demonstrated that hydrogen addition availed elevating the peak engine speed and cylinder pressure during the cold start. Both flame development and propagation periods are shortened after the hydrogen addition. When the hydrogen volume flow rate was raised from 0 to 189 dm~3/s, HC, CO and total number of particulate emissions within 19 s from the onset of cold start were reduced by 68.7%, 75.2% and 72.4%, respectively. However, because of the enhanced in-cylinder temperature, NO_X emissions were increased after the addition of hydrogen.
机译：本文通过实验研究了加氢对甲醇发动机冷启动性能的影响。该测试是在改良的四缸汽油发动机上进行的。应用电控氢注入系统实现氢端口注入。发动机在25℃的环境温度下启动，两个氢气流速分别为0和189 dm〜3 / s。结果表明，在冷启动过程中，添加氢气可提高发动机的峰值转速和气缸压力。加氢后，火焰的发展和传播的时间都缩短了。当氢气体积流量从0增加到189 dm〜3 / s时，冷启动后19 s内的HC，CO和颗粒物排放总量分别减少了68.7％，75.2％和72.4％。但是，由于缸内温度升高，添加氢气后NO_X排放增加。

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  • 来源
    《International journal of hydrogen energy》 |2014年第26期|14466-14471|共6页
  • 作者

    Bo Zhang; Changwei Ji; Shuofeng Wang; Yuchen Xiao;

  • 作者单位

    College of Environmental and Energy Engineering and Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China;

    College of Environmental and Energy Engineering and Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China;

    College of Environmental and Energy Engineering and Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China;

    College of Environmental and Energy Engineering and Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China;

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

    Hydrogen; Methanol; Cold start; Spark-ignition engine; Combustion; Emissions;

    机译：氢;甲醇;冷启动;火花点火发动机;燃烧;排放物;

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