Investigations of the fuel injection and atomization with the use of laser illumination

The paper presents some aspects of the application of selected methods of optical research whose aim is to obtain information on the course of the atomization and evaporation processes in the combustion chamber. The paper shows images of a gasoline fuel spray when injected to a high-pressure chamber. These images have been recorded using conventional sources of light and laser illumination. Research with the use of a YAG pulsed laser of high illumination pulse energy enabled an assessment of the fuel distribution in the transverse cross-section of the fuel spray. The paper describes such a possibility of modification of the experiment using laser illumination as to obtain information on the spatial distribution of both the liquid and gaseous phase of the injected fuel.