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首页> 外文期刊>Fuel >Emission characteristics of high speed, dual fuel, compression ignition engine operating in a wide range of natural gas/diesel fuel proportions
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Emission characteristics of high speed, dual fuel, compression ignition engine operating in a wide range of natural gas/diesel fuel proportions

机译：在各种天然气/柴油燃料比例下运行的高速，双燃料，压缩点火发动机的排放特性

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摘要

In the effort to reduce pollutant emissions from diesel engines various solutions have been proposed, one of which is the use of natural gas as supplement to liquid diesel fuel, with these engines referred to as fumigated, dual fuel, compression ignition engines. One of the main purposes of using natural gas in dual fuel (liquid and gaseous one) combustion systems is to reduce particulate emissions and nitrogen oxides. Natural gas is a clean burning fuel; it possesses a relatively high auto-ignition temperature, which is a serious advantage over other gaseous fuels since then the compression ratio of most conventional direct injection (DI) diesel engines can be maintained high. In the present work, an experimental investigation has been conducted to examine the effects of the total air-fuel ratio on the efficiency and pollutant emissions of a high speed, compression ignition engine located at the authors' laboratory, where liquid diesel fuel is partially substituted by natural gas in various proportions, with the natural gas fumigated into the intake air. The experimental results disclose the effect of these parameters on brake thermal efficiency, exhaust gas temperature, nitric oxide, carbon monoxide, unburned hydrocarbons and soot emissions, with the beneficial effect of the presence of natural gas being revealed. Given that the experimental measurements cover a wide range of liquid diesel supplementary ratios without any appearance of knocking phenomena, the belief is strengthened that the findings of the present work can be very valuable if opted to apply this technology on existing DI diesel engines.
机译：为了减少柴油发动机的污染物排放，已经提出了各种解决方案，其中之一是使用天然气作为液态柴油的补充，这些发动机被称为熏蒸，双燃料，压燃式发动机。在双燃料（液态和气态）燃烧系统中使用天然气的主要目的之一是减少微粒排放和氮氧化物。天然气是一种清洁的燃烧燃料。它具有相对较高的自燃温度，相对于其他气体燃料，这是一个重要的优势，因为这样可以保持大多数常规直喷（DI）柴油机的压缩比较高。在目前的工作中，已经进行了一项实验研究，以检验总空燃比对作者实验室中的高速，压缩点火发动机的效率和污染物排放的影响，该实验室部分替代了液态柴油燃料。通过各种比例的天然气，将天然气熏蒸到进气中。实验结果揭示了这些参数对制动器热效率，废气温度，一氧化氮，一氧化碳，未燃烧的碳氢化合物和烟尘排放的影响，并揭示了天然气存在的有益影响。鉴于实验测量涵盖了范围广泛的液态柴油补充比例，而没有出现爆震现象，因此人们坚信，如果选择将此项技术应用于现有的DI柴油发动机，那么本工作的发现将非常有价值。

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  • 来源
    《Fuel》 |2010年第7期|p.1397-1406|共10页
  • 作者

    R.G. Papagiannakis; C.D. Rakopoulos; D.T. Hountalas; D.C. Rakopoulos;

  • 作者单位

    Thermodynamic and Propulsion Systems Section, Aeronautical Sciences Department, Hellenic Air Force Academy, Dekelia Air Force Base, 1010 Dekelia, Attiki, Greece;

    Internal Combustion Engines Laboratory, Thermal Engineering Department, School of Mechanical Engineering, National Technical University of Athens, 9 Heroon Polytechniou St., Zografou Campus, 15780 Athens, Greece;

    rnInternal Combustion Engines Laboratory, Thermal Engineering Department, School of Mechanical Engineering, National Technical University of Athens, 9 Heroon Polytechniou St., Zografou Campus, 15780 Athens, Greece;

    rnInternal Combustion Engines Laboratory, Thermal Engineering Department, School of Mechanical Engineering, National Technical University of Athens, 9 Heroon Polytechniou St., Zografou Campus, 15780 Athens, Greece;

  • 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

    compression ignition engine; dual fuel; natural gas; diesel fuel; emissions;

    机译：压燃式发动机;双燃料;天然气;柴油染料;排放物;

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