抄録
A Variable Orifice Nozzle (VON) by changing a cross-sectional area of the nozzle injection hole, for improving a rate of injection and injection duration, has been developed to study its spray characteristics. Injection and spray pattern responded to the nozzle orifice cross-sectional area which is changing larger to smaller. Transient behavior of the sprays were recorded by two-frame CCD camera with dual YAG Laser. The analysis of the diesel spray velocity vectors were conducted using PIV analyzer with cross-correlation method. The PIV results show the three-dimensional spray patterns of the VON in the part load range.
