Abstract
Studies are made on the visualization and image measurement of high-pressure diesel fuel sprays. The second harmonic of a double-pulsed Nd: YAG laser is used as a light source for exciting fluorescent dye, Rhodamine B (C28H31CIN2O3). The combined use of a high-definition CCD camera and a specially designed synchronization system has enabled well-resolved digital images of diesel fuel spray to be acquired with a thin laser sheet (0.3mm thickness). The development process of fuel spray is observed, and fuel spray tip distance and spray angle are measured as function of time after injection.
