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ISSN Druckformat: 2152-5102
ISSN Online: 2152-5110
Indexed in
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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Zheng Yi, Lee Po-I, Matsumoto Atsushi, Xie Xingbin, Lai Ming-Chia, CFD Simulation and Optical Engine Diagnostics of Mixture Formation Processes in DI Gasoline Engine with Flexible Valvetrain, in Proceedings of the FISITA 2012 World Automotive Congress, 190, 2013. Crossref