图书馆订阅: Guest
Begell Digital Portal Begell 数字图书馆 电子图书 期刊 参考文献及会议录 研究收集
雾化与喷雾
影响因子: 1.737 5年影响因子: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN 打印: 1044-5110
ISSN 在线: 1936-2684

卷:
卷 30, 2020 卷 29, 2019 卷 28, 2018 卷 27, 2017 卷 26, 2016 卷 25, 2015 卷 24, 2014 卷 23, 2013 卷 22, 2012 卷 21, 2011 卷 20, 2010 卷 19, 2009 卷 18, 2008 卷 17, 2007 卷 16, 2006 卷 15, 2005 卷 14, 2004 卷 13, 2003 卷 12, 2002 卷 11, 2001 卷 10, 2000 卷 9, 1999 卷 8, 1998 卷 7, 1997 卷 6, 1996 卷 5, 1995 卷 4, 1994 卷 3, 1993 卷 2, 1992 卷 1, 1991

雾化与喷雾

DOI: 10.1615/AtomizSpr.v17.i7.30
pages 621-640

GASOLINE SPRAYS IN UNIFORM CROSSFLOW

J. M. Nouri
School of Engineering and Mathematical Sciences, City University, Northampton Square, London EC1V0HB
Jim H. Whitelaw
Thermofluids Section, Department of Mechanical Engineering, Imperial College of Science, Technology and Medicine, London SW7 2BX, United Kingdom

ABSTRACT

Sprays from a gasoline direct injector into a chamber at atmospheric pressure with an injection duration of 3.2 ms and a uniform 11 m/s crossflow have been visualized by a high-resolution CCD camera, and the velocity and droplet characteristics measured with a phase Doppler anemometer. The images show that smaller droplets were displaced in the direction of the crossflow by 5.6, 6.9, and 7.6 mm for injection pressures of 30, 50, and 80 bar, respectively, 1.5 ms after the start of injection. These values increased with time. The crossflow decreased the penetration on the incident side of the cone spray and caused a small increase on the lee side. The local measurements confirm the displacement of droplets of diameter and velocity less than around 27 μm and 22 m/s, respectively, by the crossflow at an injection pressure of 30 bar and the corresponding values at 80 bar were 20 μm and 25 m/s. The radial distributions of droplet mean velocity showed a clear shift of mean velocity profile on the order of 15 mm in the direction of crossflow for 30 and 80 bar injection pressures at axial locations 60 and 80 mm, respectively. The results are directly relevant to gasoline engines with combinations of swirl and tumble and early injection. The spray will be shorter with the higher cylinder pressures of late injection and the ratio of cross-flow to spray momentum will be higher so that the effects will be larger.


Articles with similar content:

CHARACTERIZATION OF HIGH-INJECTION-PRESSURE DIESEL SPRAYS WITH RELATION TO PARTICULATE AND NOx EMISSIONS
Atomization and Sprays, Vol.8, 1998, issue 1
T. F. Su, Patrick V. Farrell
PHASE-SHIFT DOPPLER ANEMOMETER MEASUREMENTS OF DIESEL SPRAY BEHAVIOR IN OPEN COMBUSTION CHAMBERS
Atomization and Sprays, Vol.2, 1992, issue 4
M. M. Elkotb, S. A. Wilson, T. I. Sabry, O. M. F. Elbahar
SPRAY STRUCTURE FROM DOUBLE FUEL INJECTION IN MULTIHOLE INJECTORS FOR GASOLINE DIRECT-INJECTION ENGINES
Atomization and Sprays, Vol.19, 2009, issue 6
Nicholas Mitroglou, J. M. Nouri, C. Arcoumanis
SPRAY STRUCTURE AND CHARACTERISTICS OF HIGH-PRESSURE GASOLINE INJECTORS FOR DIRECT-INJECTION ENGINE APPLICATIONS
Atomization and Sprays, Vol.11, 2001, issue 1
Chang Sik Lee, Dae Sik Kim, Mun Soo Chon
THE INFLUENCE OF ECCENTRICITY ON THE PERFORMANCE OF A COAXIAL PREFILMING AIR-ASSIST ATOMIZER
Atomization and Sprays, Vol.11, 2001, issue 1
Thomas Richter, Andreas Glathe, Gunter Wozniak