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首页> 外文期刊>Fuel >Effect of n-Butane and propane on performance and emission characteristics of an SI engine operated with DME-blended LPG fuel
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Effect of n-Butane and propane on performance and emission characteristics of an SI engine operated with DME-blended LPG fuel

机译：正丁烷和丙烷对掺有DME的LPG燃料的SI发动机性能和排放特性的影响

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摘要

In this study, a spark ignition engine operated with DME-blended LPG fuel was studied experimentally. In particular, the effect of n-Butane and propane on performance, emissions characteristics (including hydrocarbon, CO, and NO_x), and the combustion stability of an SI engine fuelled with DME-blended LPG fuel were examined. Four kinds of test fuel with different blend ratios of n-Butane, propane, and DME were used. The percentage of DME in the fuel blend was 20% by mass. The results showed that stable engine operation was possible for a wide range of engine loads with pro pane containing LPG/DME-blended fuel rather than n-Butane containing LPG/DME-blended fuel since the octane number of propane is higher than that of n-Butane. Also, engine power output, break specific fuel consumption (BSFC), and combustion stability when operating with propane containing DME-blended fuel were comparable to those values in case of pure LPG fuel operation. Engine power output was decreased and BSFC was increased with n-Butane containing DME-blended fuel due to the lower energy density of DME. To examine the effect of n-Butane and propane on emissions and fuel economy in an actual vehicle, a vehicle was tested during an FTP-75 cycle. Through the emission and fuel economy test in the FTP-75 cycle, we conclude that the differences in emission level and fuel economy were not signif icant according to the blend of n-Butane, propane, and DME. Considering the experimental results from the engine bench and the actual vehicle, the 20% content of DME-blended fuel, regardless of LPG type, can be used as an alternative fuel for LPG.
机译：在这项研究中，实验研究了掺有DME的LPG燃料的火花点火发动机。特别地，研究了正丁烷和丙烷对掺有DME的LPG燃料的SI发动机的性能，排放特性（包括碳氢化合物，CO和NO_x）以及燃烧稳定性的影响。使用四种正丁烷，丙烷和DME混合比不同的测试燃料。 DME在燃料混合物中的百分比为20质量％。结果表明，由于丙烷的辛烷值高于n的正辛烷值，因此使用含有LPG / DME混合燃料的前面板而不是含有LPG / DME混合燃料的正丁烷，可以在各种发动机负载下实现稳定的发动机运行。丁烷同样，使用含DME的丙烷混合燃料运行时，发动机功率输出，破损比燃料消耗（BSFC）和燃烧稳定性与纯LPG燃料运行时的那些值相当。由于DME的能量密度较低，因此使用含正丁烷的DME混合燃料降低了发动机的动力输出，并增加了BSFC。为了检查实际车辆中正丁烷和丙烷对排放和燃油经济性的影响，在FTP-75循环期间对车辆进行了测试。通过FTP-75循环的排放和燃油经济性测试，我们得出结论，根据正丁烷，丙烷和DME的混合，排放水平和燃油经济性的差异并不显着。考虑到来自发动机工作台和实际车辆的实验结果，无论LPG类型如何，DME混合燃料的20％含量都可以用作LPG的替代燃料。

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  • 来源
    《Fuel》 |2011年第4期|p.1674-1680|共7页
  • 作者

    Seokhwan Lee; Seungmook Oh; Young Choi; Kernyong Kang;

  • 作者单位

    Engine Research Team, Eco-Environment Division, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, Taejon 305-343, Republic of Korea;

    Engine Research Team, Eco-Environment Division, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, Taejon 305-343, Republic of Korea;

    Engine Research Team, Eco-Environment Division, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, Taejon 305-343, Republic of Korea;

    Engine Research Team, Eco-Environment Division, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, Taejon 305-343, Republic of Korea;

  • 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

    dme (di-methyl ether); lpg (liquified petroleum gas); blended fuel; si (spark ignition); alternative fuel;

    机译：dme（二甲基醚）;液化石油气（液化石油气）;混合燃料si（火花点火）;替代燃料;

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