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Gasoline displacement and NOx reduction in an SI engine by aqueous alcohol injection

机译:SI发动机中通过酒精水溶液喷射实现的汽油置换和NOx还原

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摘要

Substitution of bio-fuels for fossil fuels in gasoline engines is conventionally achieved by premixing eth-anol and gasoline before use. The drawbacks are the high purity ethanol (>95%) required for mixing to prevent phase separation and the invariable fraction of ethanol throughout the drive cycle. In this study, an independently controlled set of aqueous alcohols injectors were installed at the manifold alongside the gasoline injectors. Aqueous alcohols with high water content can be injected as a substitutional fuel for gasoline. The fraction of ethanol can be controlled to achieve best engine performance and emissions. Engine tests showed that, at highway driving condition, the engine compensated for the aqueous alcohol and reduced gasoline flowrate. However, at high-load running, the ECU (Engine Control Unit) no longer reads the feedback signals to reduce gasoline supply and the engine burned at fuel-rich conditions; both the engine performance and emissions deteriorated.
机译:传统上,通过在使用前将乙醇和汽油预混合,可以将生物燃料替代为汽油发动机中的化石燃料。缺点是混合所需的高纯度乙醇(> 95%)可以防止相分离,并且在整个驱动周期内乙醇的分数不变。在这项研究中,一套独立控制的含水酒精喷油器与汽油喷油器一起安装在歧管上。可以注入高水含量的水醇作为汽油的替代燃料。可以控制乙醇的比例,以实现最佳的发动机性能和排放。发动机测试表明,在高速公路行驶条件下,发动机补偿了酒精水溶液并降低了汽油流量。但是,在高负荷运行时,ECU(发动机控制单元)不再读取反馈信号以减少汽油供应,并且发动机在燃料丰富的条件下燃烧。发动机性能和排放均恶化。

著录项

  • 来源
    《Fuel》 |2010年第3期|604-610|共7页
  • 作者单位

    Department of Mechanical Engineering, Southern Taiwan University, No. 1 Nantai St., Yung-Kang City, Tainan 71005, Taiwan, ROC;

    Department of Mechanical Engineering, Southern Taiwan University, No. 1 Nantai St., Yung-Kang City, Tainan 71005, Taiwan, ROC;

    Department of Mechanical Engineering, National Cheng Kung University, No. 1 University Road, Tainan City 70101, Taiwan, ROC;

    Department of Mechanical Engineering, National Cheng Kung University, No. 1 University Road, Tainan City 70101, Taiwan, ROC;

  • 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

    SI engine; aqueous alcohol; engine performance; NOx;

    机译:SI引擎;含水酒精;发动机性能;氮氧化物;

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