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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Imprimir: 2152-5102
ISSN En Línea: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v24.i4-6.40
pages 480-487

Characterization of Direct-Injection Gasoline Sprays under Different Ambient and Fuel Injection Conditions

J.-H. Yoo
Mechanical Engineering Department, Wayne State University, Detroit, MI
Fu-Quan Zhao
Department of Mechanical Engineering, Wayne State University, Detroit, MI 48202
Y. Liu
Mechanical Engineering Department, Wayne State University, Detroit, MI
Ming Chia Lai
Department of Mechanical Engineering, Wayne State University, Detroit, MI 48202
K.-S. Lee
Hyundai America Technical Center, Inc., Ann Arbor, MI

SINOPSIS

The spray characteristics of a high-pressure fuel injector for direct-injection gasoline engines were tested under different ambient and fuel injection conditions. The global spray structure was visualized using laser Mie scattering technique and the spray atomization process was characterized by Phase Doppler analyzer. The transient spay structure was investigated as a function of time after fuel injection start. Two apparent counter-rotating recirculation zones were observed at the later stage or after the end of fuel injection inside the sprays with a small momentum and the dependence of droplet size and velocity on the fuel injection pressure is complex and changes with the measurement location.


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