LDA Measurement of Gasoline Droplet Velocities and Sizes at Intake-Valve Annular Passage in Steady Flow State
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The size, velocity and spatially relative frequency of fuel droplets were measured. The droplet size was determined from its scattered light intensity and the number of Doppler burst waves of an LDA signal. Intake port configuration effects and fuel injection effects on the droplet entrance manner into a cylinder were investigated using straight and swirl ports. The difference in manner was clarified to be due to the interaction between the airflow in the ports and the fuel droplets.