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首页> 外文期刊>Combustion and Flame >Mapping surrogate gasoline compositions into RON/MON space
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Mapping surrogate gasoline compositions into RON/MON space

机译：将替代汽油成分映射到RON / MON空间

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摘要

In this paper, new experimentally determined octane numbers (RON and MON) of blends of a tri-compo-nent surrogate consisting of toluene, n-heptane, i-octane (called toluene reference fuel TRF) arranged in an augmented simplex design are used to derive a simple response surface model for the octane number of any arbitrary TRF mixture. The model is second-order in its complexity and is shown to be more accurate to the standard "linear-by-volume" (LbV) model which is often used when no other information is available. Such observations are due to the existence of both synergistic and antagonistic blending of the octane numbers between the three components. In particular, antagonistic blending of toluene and iso-octane leads to a maximum in sensitivity that lies on the toluene/iso-octane line. The model equations are inverted so as to map from RON/MON space back into composition space. Enabling one to use two simple formulae to determine, for a given fuel with known RON and MON, the volume fractions of toluene, n-heptane and iso-octane to be blended in order to emulate that fuel. HCCI engine simulations using gasoline with a RON of 98.5 and a MON of 88 were simulated using a TRF fuel, blended according to the derived equations to match the RON and MON. The simulations matched the experimentally obtained pressure profiles well, especially when compared to simulations using only PRF fuels which matched the RON or MON. This suggested that the mapping is accurate and that to emulate a refinery gasoline, it is necessary to match not only the RON but also the MON of the fuel.
机译：在本文中，使用了由实验确定的新的辛烷值（RON和MON）的三组分替代物的混合物，该替代物由甲苯，正庚烷，异辛烷（称为甲苯参考燃料TRF）组成，并以增强的单纯形设计排列。得出任何任意TRF混合物的辛烷值的简单响应表面模型。该模型的复杂性是二阶的，并且显示出比标准的“按体积线性”（LbV）模型更为准确，该模型通常在没有其他可用信息时使用。这样的观察是由于在三个组分之间存在辛烷值的协同和拮抗混合。特别地，甲苯和异辛烷的对抗性共混导致在甲苯/异辛烷线上的最大灵敏度。将模型方程式反转，以便从RON / MON空间映射回合成空间。对于使用已知RON和MON的给定燃料，可以使用两个简单的公式来确定要模拟的燃料，甲苯，正庚烷和异辛烷的混合体积分数。使用TRF燃料对使用RON为98.5，MON为88的汽油进行的HCCI发动机模拟进行了模拟，并根据导出的方程式进行了混合以匹配RON和MON。该模拟与实验获得的压力曲线非常吻合，特别是与仅使用与RON或MON匹配的PRF燃料进行的模拟相比。这表明映射是准确的，并且为了模拟炼油厂的汽油，不仅需要匹配RON，还需要匹配燃料的MON。

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  • 来源
    《Combustion and Flame》 |2010年第6期|p.1122-1131|共10页
  • 作者

    Neal Morgan; Andrew Smallbone; Amit Bhave; Markus Kraft; Roger Cracknell; Gautam Kalghatgi;

  • 作者单位

    Department of Chemical Engineering, University of Cambridge, Cambridge CB2 3RA, United Kingdom;

    Reaction Engineering Solutions Ltd., 61 Canterbury Street, Cambridge CB4 3QG, United Kingdom;

    Reaction Engineering Solutions Ltd., 61 Canterbury Street, Cambridge CB4 3QG, United Kingdom;

    Department of Chemical Engineering, University of Cambridge, Cambridge CB2 3RA, United Kingdom;

    Shell Global Solutions, Shell Technology Centre Thornton, P.O. Box 1, Chester CH1 3SH, United Kingdom;

    Shell Global Solutions, Shell Technology Centre Thornton, P.O. Box 1, Chester CH1 3SH, United Kingdom;

  • 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

    RON; MON; fuel sensitivity; surrogate gasolines; modelling;

    机译：RON;MON;燃油敏感性代用汽油;造型;

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