An Experimental Study on MF-gasoline Blends Direct Injection Spray Characteristics

被引:0
|
作者
Gao D. [1 ]
Guo Y. [1 ]
Wang F. [1 ]
Fu T. [1 ]
机构
[1] China Automotive Technology and Research Center Co., Ltd., Tianjin
来源
关键词
2-methylfuran-gasoline blends; Flash boiling; High-speed schlieren photography; Multi-hole DI injector;
D O I
10.19562/j.chinasae.qcgc.2019.02.002
中图分类号
学科分类号
摘要
Direct injection (DI) system has been commonly used in spark ignition 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 because of its better performance than ethanol. However, there is little study on the DI spray characteristics of 2-MF-gasoline blends. In this paper, the spray characteristics of 2-methylfuran-gasoline blends M20 (20% volume fraction MF-gasoline blend fuel), M40 and pure gasoline from 6-hole DI injector are investigated under various ambient pressure and fuel temperature using high-speed schlieren photography. The spray parameters include spray penetration, spray cone angle and spray area. The results show that there are two different spray forms, flash boiling and non-flash boiling. When flash boiling occurs, the spray penetration increases with the increase of MF ratio. With the reduction of ambient pressure, the spray penetration decreases firstly and then increases. And the spray cone angle is greater than that without flash boiling. The spray area increases with the increase of MF ratio and the spray area is negatively correlated with the fuel temperature. When there is no flash boiling, with the increase of MF ratio, the spray penetration decreases. © 2019, Society of Automotive Engineers of China. All right reserved.
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页码:126 / 132
页数:6
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