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Experimental analysis on spray development of 2-methylfuran-gasoline blends using multi-hole DI injector

机译：多孔DI注射器对2-甲基呋喃汽油混合物喷雾发展的实验分析

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摘要

Confronting the situation of environment pollution and energy shortage, direct injection (DI) system has been commonly used in gasoline engines for its good performance in fuel economy, combustion efficiency, emissions and cold-start. Currently, 2-methylfuran (MF) has already been a more attractive biomass fuel in spark ignition (SI) engine, however, there is little knowledge about its spray behaviors in DI injector, especially when it is used as a gasoline additive. In this study, the spray characteristics of MF-gasoline blends M20 (20% volume fraction MF-gasoline blend fuel), M40 and pure gasoline from 6-hole DI injector are investigated under various ambient pressures and fuel temperatures using high-speed schlieren photography. The experimental results show that two different spray shapes, flash boiling and non-flash boiling, can be observed from experiment images. When flash boiling occurs at low ambient pressure, the level of flash boiling intensifies with the increase of MF mixing ratio which can make spray front collapse intensely. The spray area increases with the MF mixing ratio rising and it has a negative correlation with the fuel temperature at low ambient pressures. As for no flash boiling case, the spray penetration decreases with the increase of MF mixing ratio. Under the ambient pressure of 0.6 MPa and 0.85 MPa, the spray cone angle for same fuel increases with the increase in fuel temperature. On the other hand, at the same fuel temperature, spray area increases slightly with the increase of mixing ratio of MF blended in gasoline. (C) 2015 Elsevier Ltd. All rights reserved.
机译：面对环境污染和能源短缺的情况，直接喷射（DI）系统因其在燃油经济性，燃烧效率，排放和冷启动方面的良好性能而被普遍使用。当前，2-甲基呋喃（MF）在火花点火（SI）发动机中已经是一种更具吸引力的生物质燃料，但是，对其在DI喷油器中的喷雾行为知之甚少，尤其是在用作汽油添加剂时。在这项研究中，使用高速schlieren摄影技术研究了六孔DI喷射器中MF-汽油混合物M20（20％体积分数MF-汽油混合物燃料），M40和纯汽油的喷雾特性。实验结果表明，可以从实验图像中观察到两种不同的喷雾形状，即闪蒸和非闪蒸。当在较低的环境压力下发生闪蒸时，闪蒸的水平会随着MF混合比的增加而增强，这会使喷雾前沿剧烈塌陷。喷雾面积随MF混合比的增加而增加，并且在低环境压力下与燃料温度呈负相关。至于无闪蒸情况，喷雾渗透率随MF混合比的增加而降低。在0.6 MPa和0.85 MPa的环境压力下，相同燃料的喷雾锥角随燃料温度的升高而增加。另一方面，在相同燃料温度下，喷雾面积随汽油中MF混合比的增加而略有增加。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Fuel》 |2016年第15期|245-253|共9页
  • 作者

    Wei Haiqiao; Gao Dongzhi; Zhou Lei; Feng Dengquan; Chen Ceyuan; Pei Zigang;

  • 作者单位

    Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China;

    Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China;

    Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China;

    Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China;

    Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China;

    Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China;

  • 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

    Spray structures; Flash boiling; 2-Methylfuran-gasoline; Multi-hole injector;

    机译：喷雾结构;闪蒸;2-甲基呋喃汽油;多孔注射器;

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