Effects of Injection Timing and Pressure on Combustion and Emissions on an Engine Fueled with Diesel/Gasoline/n-Butanol Blends

被引：0

作者：

Wang Q. ^{[1
]}

Huang H. ^{[1
]}

Shi C. ^{[1
]}

Wang X. ^{[1
]}

Zhou C. ^{[1
]}

Liu Q. ^{[1
]}

机构：

[1] School of Mechanical Engineering, Guangxi University, Nanning

来源：

Huang, Haozhong (hhz421@gxu.edu.cn) | 1600年 / Chinese Society for Internal Combustion Engines卷 / 35期

关键词：

Blended fuel; Diesel engine; Emission characteristic; Injection strategies; Low temperature combustion;

D O I：

10.16236/j.cnki.nrjxb.201703029

中图分类号：

学科分类号：

摘要：

Comparative study of effects of injection strategies on combustion and emission characteristics was conducted on a four-cylinder diesel engine fueled with diesel/gasoline/n-butanol. During the experiment, the engine was operated at a constant speed of 1600 r/min. Four different fuels including pure diesel (D100), blended fuels of diesel/gasoline (D70G30), diesel/n-butanol (D70B30) and diesel/gasoline/n-butanol (D70B15G15) were tested. Results show that, compared with D100, the soot emissions of three blended fuels reduce greatly. The soot emission of D70B30, is the lowest among them. The addition of gasoline or n-butanol into diesel results in the increase in peak cylinder pressure, peak heat release rate, maximum pressure rise rate (MPRR) and brake specific fuel consumption (BSFC), while the extension of ignition delay period and the postponement of CA 50 (crank angle of 50% accumulated heat release rate). However, the CO emissions increase after blended gasoline or n-butanol into diesel. The advancing of injection timings can obviously offset the above phenomenon. There is little difference in NOx emissions between blended fuels and D100. Moreover, the injection strategies show a more remarkable effect on the soot emissions of D100 than that of blended fuels. Nevertheless, the delay of injection timings can greatly offset the increase of MPRR, induced by the blending of gasoline or n-butanol. In addition, the effect of injection pressures on soot emissions is more obvious than injection timing. © 2017, Editorial Office of the Transaction of CSICE. All right reserved.

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页码：200 / 207

页数：7

共 15 条

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