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Combustion and emission characteristics of a HCCI engine fuelled with n-butanol-gasoline blends

机译：用正丁醇-汽油混合物供油的HCCI发动机的燃烧和排放特性

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摘要

Biobutanol, i.e. n-butanol, is a promising alternative fuel or fuel blend to gasoline to reduce the consumption of fossil fuel and carbon dioxide emissions from spark ignition (SI) and homogeneous charge compression ignition (HCCI), also known as controlled autoignition (CAI), engines. In this work, investigation was conducted on a single cylinder port fuel injection four-stroke HCCI/CA1 engine fuelled with gasoline (BuO), the blend containing 30% n-butanol and 70% gasoline by volume (Bu30), and pure n-butanol (Bu100). The HCCI/CAI operation was achieved by the negative valve overlap strategy through variable exhaust and intake valve timing and lift devices. The results show that independent of engine speeds at a given exhaust valve closing (EVC) timing, the onset of the autoignition occurs earlier and combustion duration becomes shorter when an increasing amount of n-butanol is used in place of gasoline. The increase in the engine speed also advances the autoignition timing. However, indicated mean effective pressure (IMEP) decreases with increasing n-butanol in the blends and engine speeds. Furthermore, the effect of n-butanol on the emissions was studied, including oxides of nitrogen, formaldehyde, acetal-dehyde, ethanol and aromatics in the engine exhaust.
机译：生物丁醇，即正丁醇，是一种有前途的替代汽油的燃料或燃料混合物，可减少化石燃料的消耗和火花点火（SI）和均质充量压缩点火（HCCI）（也称为受控自燃（CAI））的二氧化碳排放量）， 引擎。在这项工作中，我们对单缸进气口四冲程HCCI / CA1发动机进行了调查，该发动机以汽油（BuO），按体积计含有30％正丁醇和70％汽油（Bu30）的混合气以及纯正n-丁醇（Bu100）。 HCCI / CAI操作通过负气门重叠策略通过可变的排气门和进气门正时和提升装置实现。结果表明，在给定的排气门关闭（EVC）时机，与发动机转速无关，当使用越来越多的正丁醇代替汽油时，自燃开始较早，燃烧时间变短。发动机转速的增加也使自动点火正时提前。但是，指示平均有效压力（IMEP）随着正丁醇含量的增加和发动机转速的降低而降低。此外，还研究了正丁醇对排放的影响，包括氮氧化物，甲醛，乙缩醛，乙醇和发动机排气中的芳烃。

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  • 来源
    《Fuel》 |2013年第6期|668-674|共7页
  • 作者

    Bang-Quan He; Mao-Bin Liu; Jie Yuan; Hua Zhao;

  • 作者单位

    State Key Laboratory of Engines, Tianjin University, Tianjin 300072, PR China;

    State Key Laboratory of Engines, Tianjin University, Tianjin 300072, PR China;

    State Key Laboratory of Engines, Tianjin University, Tianjin 300072, PR China;

    State Key Laboratory of Engines, Tianjin University, Tianjin 300072, PR China, Centre for Advanced Powertrain and Fuels, Brunei University London, UK;

  • 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

    butanol; HCCI; CAI; engine; combustion;

    机译：丁醇HCCI;CAI;发动机;燃烧;

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