IMAGING OF SPRAY AND FLAME IN RECIPROCATING ENGINES

The liquid fuel injected with a high injection pressure into the combustion chamber of a diesel engine undergoes atomization, evaporation, mixing with air and combustion. The quantitative measurements of these processes are essential to understand and control the combustion phenomena. The qualitative observation of the high speed pictures of these phenomena has been conducted since the 1930s. In the past decade, however, several techniques of the quantitative analysis of sprays and flames have become possible due to the significant progress in the imaging and data processing equipment.