Publication de 12 numéros par an
ISSN Imprimer: 1044-5110
ISSN En ligne: 1936-2684
Indexed in
QUANTITATIVE ANALYSES OF FUEL SPRAY-AMBIENT GAS INTERACTION BY MEANS OF LIF-PIV TECHNIQUE
RÉSUMÉ
The in-cylinder fuel-ambient gas mixing property in a direct injection (D.I.) diesel engine significantly influences the ensuing combustion and exhaust emission performance. In this study, the interaction of nonevaporating diesel spray with the surrounding gas was analyzed quantitatively in the quiescent condition at room temperature and with ambient gas pressure of 1 MPa by means of the laser induced fluorescence-particle image velocimetry (LIF-PIV) technique. Particularly, this study focused on the calculation of gas mass flow rate entrained through the entire spray region (spray side periphery and tip region) and total entrained gas-fuel ratio by using the gas velocity data obtained by the LIF-PIV technique. Another focus of this study was the gas entrainment characteristics of diesel spray under a wide range of injection pressures (100, 200, and 300 MPa) and the micro-hole nozzle (0.08mm) condition. The results indicate that the entrained gas mass flow rate at the spray tip region is prominent in the whole periphery and the proportion of gas entrainment at the side surface region increases as the spray develops Higher injection pressure significantly enhances the total entrained gas mass; however the increase of ambient gas/fuel mass ratio becomes moderate gradually as the injection pressure increases. The calculation model proposed by this work is capable of illustrating the ambient gas flow characteristics of the diesel spray accurately.
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Kuti Olawole Abiola, Nishida Keiya, Zhu Jingyu, Experimental studies on spray and gas entrainment characteristics of biodiesel fuel: Implications of gas entrained and fuel oxygen content on soot formation, Energy, 57, 2013. Crossref
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Chen Run, Okazumi Ryoma, Nishida Keiya, Ogata Youichi, Effect of Ethanol Ratio on Ignition and Combustion of Ethanol-Gasoline Blend Spray in DISI Engine-Like Condition, SAE International Journal of Fuels and Lubricants, 8, 2, 2015. Crossref
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Nishida Keiya, Zhu Jingyu, Leng Xianyin, He Zhixia, Effects of micro-hole nozzle and ultra-high injection pressure on air entrainment, liquid penetration, flame lift-off and soot formation of diesel spray flame, International Journal of Engine Research, 18, 1-2, 2017. Crossref
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Chen Run, Nishida Keiya, Kataoka Hajime, Characterization of the ignition and combustion processes of spray injected by a hole-type nozzle for a direct-injection spark ignition engine, Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 228, 6, 2014. Crossref
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Chen Run, Nishida Keiya, Shi Baolu, Quantitative investigation on the spray mixture formation for ethanol-gasoline blends via UV–Vis dual-wavelength laser absorption scattering (LAS) technique, Fuel, 242, 2019. Crossref
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Kuti Olawole Abiola, Sarathy S. Mani, Nishida Keiya, Spray combustion simulation study of waste cooking oil biodiesel and diesel under direct injection diesel engine conditions, Fuel, 267, 2020. Crossref
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Yang Mian, Yuan Chenheng, Chen Yuanpei, Shao Yiming, Numerical study on turbulent dispersion of diesel sprays under ultrahigh injection pressure using large eddy simulation, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2020. Crossref
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Yang Mian, Chen Yuanpei, Shao Yiming, Effects of different droplet dispersion modeling methods on diesel spray simulation in Eulerian-Lagrangian framework, Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 235, 6, 2021. Crossref
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Zhu Jingyu, Shan Conghui, Nishida Keiya, Long Wuqiang, Dong Dongsheng, Simultaneous PIV/LIF-PIV measurements and numerical simulation of liquid flow and ambient gas flow for transient diesel spray, Fuel, 309, 2022. Crossref