A model of a fuel spray parameter in a marine diesel engine

This work presents an empirical model of one of the main parameters describing fuel spray evolution in a marine Diesel engine – spray cone angle in the early stage of spray formation. The model was formulated based on experimental data obtained in a constant volume chamber with optical access. The laboratory experimental studies were carried out to determine the parameters of fuel spray in the marine Diesel engine-relevant air densities. The Mie scattering spray visualization technique was used to record the liquid fuel propagation process. Furthermore, a model of the evolution over time of spray cone angle is formulated, where the literature models of spray cone angle are defined as constant. The calculation results of the spray cone angle were verified against the experimental results of the spray cone angle.