The atomization characteristics of a vibration type atomizer when fuel is supplied intermittently.

The atomization characteristhcs of an atomizer of the ultrasonic vibration type are investigated when fuel is supplied intermittently to the vibration member. The interval time of the liquid supply is 100ms and the supply period is varied from 5ms to 20ms. The mean diameter, velocity, and flow rate of the spray are measured by a phase doppler-type analyzer. The velocity is 0.2-1.0m/s and the mean diameter is 70-90μm. When the fuel is supplied intermittently to the vibratory member, the large size droplet is generated initially. The droplet size is reduced by improving the vibratory member shape and controlling vibration.