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Performance and emissions of iso-stoichiometric ternary GEM blends on a production SI engine

机译：等量化学计量三元GEM混合物在生产SI发动机上的性能和排放

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摘要

Removing the biomass limit is one of the great challenges to further enlarge the share of renewable eth-anol as alternative for fossil fuels. One of the possible solutions for this constraint are the ternary GEM (Gasoline-Ethanol-Methanol) blends. The air-to-fuel ratio of these blends is hereby chosen at the value of an E85-blend (9.75 kg air/kg fuel) while the ethanol is replaced by methanol/gasoline and therefore these blends are called 'iso-stoichiometric'. If the methanol is produced out of renewable sources, these blends can help extend the part of clean fuels on the market. The ternary blends show few differences in physical properties for the total range of possible blends and are considered as drop-in alternatives to the original E85-blend for a flex fuel engine. In this paper the performance and engine-out emissions of four of these GEM-blends were examined on a 4 cylinder 1.8 1 PFI production engine. A single cylinder engine with high compression ratio was used for a preliminary study of the knock behavior of these blends. The measurement results are compared with those on neat gasoline, methanol and ethanol to demonstrate the potential of these ternary blends as a fossil fuel alternative. All the GEM fuels which were tested gave very similar results to E85 and can therefore indeed be used as 'drop-in' fuels for flex-fuel vehicles.
机译：取消生物量限制是进一步扩大可再生乙醇作为化石燃料替代品的份额的重大挑战之一。针对该约束的可能解决方案之一是三元GEM（汽油-乙醇-甲醇）混合物。因此，将这些混合物的空燃比选择为E85混合物的值（9.75千克空气/千克燃料），同时用甲醇/汽油代替乙醇，因此将这些混合物称为“等化学计量”。如果甲醇是用可再生资源生产的，那么这些混合物可以帮助扩大清洁燃料在市场上的份额。三元共混物在可能的共混物的整个范围内物理性能几乎没有差异，被认为是弹性燃料发动机的原始E85混合料的直接替代品。在本文中，在4缸1.8 1 PFI生产发动机上检查了这4种GEM混合物的性能和发动机排放。高压缩比的单缸发动机被用于这些混合物的爆震性能的初步研究。将测量结果与纯汽油，甲醇和乙醇的测量结果进行比较，以证明这些三元混合物作为化石燃料替代品的潜力。所有经过测试的GEM燃料的结果都与E85非常相似，因此实际上可以用作弹性燃料汽车的“嵌入式”燃料。

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  • 来源
    《Fuel》 |2014年第ptaa期|286-293|共8页
  • 作者

    L. Sileghem; A. Coppens; B. Casier; J. Vancoillie; S. Verhelst;

  • 作者单位

    Department of Flow, Heat and Combustion Mechanics, Ghent University, Sint-Pietersnieuwstraat 41, B-9000 Ghent, Belgium;

    Department of Flow, Heat and Combustion Mechanics, Ghent University, Sint-Pietersnieuwstraat 41, B-9000 Ghent, Belgium;

    Department of Flow, Heat and Combustion Mechanics, Ghent University, Sint-Pietersnieuwstraat 41, B-9000 Ghent, Belgium;

    Department of Flow, Heat and Combustion Mechanics, Ghent University, Sint-Pietersnieuwstraat 41, B-9000 Ghent, Belgium;

    Department of Flow, Heat and Combustion Mechanics, Ghent University, Sint-Pietersnieuwstraat 41, B-9000 Ghent, Belgium;

  • 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

    Ternary blends; Methanol; Ethanol; Flex fuel vehicles; SI engine;

    机译：三元混合;甲醇;乙醇;弹性燃料汽车;SI引擎;

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