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ICLASS 97
Proceedings of the Seventh International Conference on Liquid Atomization and Spray Systems

ISBN Druckformat: 89-950039-2-8

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

Abstrakt

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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