ABSTRACT
This chapter presents results of experimental investigations. These results show the influence of the design and operational conditions of atomizers on the parameters of the atomized liquid. The chapter discusses basic types of atomizers. Diesel engines are most sensitive to the spray shape. In these engines, open chambers with direct injection, semi-open chambers with direct injection, and divided chambers, that is, swirl chambers and precombustion chambers, are used. Operation of older designs of open chambers with direct injection was based mainly on utilization of the fuel jet energy. Significant deterioration of the atomization quality occurs at the onset and the end of each injection. Thus, during intermittent injection the drop diameters vary with both time and location in the jet. In addition to the losses in the tangential orifices and in the swirl chamber, losses also occur in other places within the atomizer.
