Simulation analysis of influencing factors of flash boiling spray collapse of porous injector

被引：0

作者：

Xie F.-X. ^{[1
]}

Zhao S.-J. ^{[1
]}

Wang Z.-S. ^{[1
]}

Liu S. ^{[2
]}

Li X.-P. ^{[1
]}

Zhang C. ^{[3
]}

机构：

[1] College of Automotive Engineering, Jilin University, Changchun

[2] FAW-Volkswagen Automotive Co.，Ltd., Changchun

[3] China FAW Group R&D Institute Co，Ltd., Powertrain Development Department of New Energy Development Institute, Changchun

来源：

Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2023年 / 53卷 / 12期

关键词：

flash boiling; numerical simulation; spray characteristics; spray collapse;

D O I：

10.13229/j.cnki.jdxbgxb.20221346

中图分类号：

学科分类号：

摘要：

The Converge was used to study the spray characteristics of porous injectors under different fuel temperature conditions，and the influence on the spray collapse degree was studied by changing the number of nozzles，ambient pressure and temperature，oil beam injection direction and radial spacing of adjacent nozzles. The results show that with the increase of fuel temperature，the degree of flashing phenomenon is more violent，the spray cone angle and spray width increase，the spray center is difficult to exchange with the external gas，so that the low pressure condition of the spray center is difficult to improve，and the oil beam gathers to the middle under the action of pressure difference，and finally evolves into spray collapse. By changing the ambient pressure and temperature，it can be found that after appropriately increasing the environmental pressure，the spray collapse phenomenon will become violent，and increasing the ambient temperature has no obvious effect on the degree of spray collapse；Changing the oil beam spacing by changing the number of nozzle holes，the direction of the oil beam and the radial spacing of the spray holes has a significant effect on the degree of spray collapse. © 2023 Editorial Board of Jilin University. All rights reserved.

引用

页码：3314 / 3325

页数：11

共 11 条

[1] Curtis B., US ethanol industry: the next inflection point, 2007 year in review
[2] Zhao F, Lai M C, Harrington D L., Automotive spark-ignited direct-injection gasoline engines, Progress in Energy and Combustion Science, 25, 5, pp. 437-562, (1999)
[3] Hoffmann G, Befrui B, Berndorfer A, Et al., Fuel system pressure increase for enhanced performance of GDi multi-hole injection systems, SAE International Journal of Engines, 7, 1, pp. 519-527, (2014)
[4] Xu M, Zhang Y, Zeng W, Et al., Flash boiling: easy and better way to generate ideal sprays than the high injection pressure, SAE International Journal of Fuels and Lubricants, 6, 1, pp. 137-148, (2013)
[5] He X, Li Y, Liu C, Et al., Characteristics of spray and wall wetting under flash-boiling and non-flashing conditions at varying ambient pressures, Fuel, 264, (2020)
[6] Guo H, Ma X, Li Y, Et al., Effect of flash boiling on microscopic and macroscopic spray characteristics in optical GDI engine, Fuel, 190, pp. 79-89, (2017)
[7] Akop M Z, Zama Y, Furuhata T, Et al., Characteristics of adhesion of diesel fuel on impingement disk wall. Part 1: effect of impingement area and inclination angle of disk, Atomization and Sprays, 23, 8, pp. 725-744, (2013)
[8] Li X, Pan H, Dong X, Et al., Spray impingement wall film breakup by wave entrainment, Proceedings of the Combustion Institute, 37, 3, pp. 3287-3294, (2019)
[9] Li X, Xiao D, Parrish S E, Et al., Dynamics of spray impingement wall film under cold start conditions[J], International Journal of Engine Research, 21, 2, pp. 319-329, (2020)
[10] Zeng W, Xu M, Zhang G, Et al., Atomization and vaporization for flash-boiling multi-hole sprays with alcohol fuels, Fuel, 95, pp. 287-297, (2012)

← 1 2 →