OBSERVATION OF SOOT BEHAVIOR IN A DIESEL COMBUSTION CHAMBER.

The authors used highspeed photography of transmitted light through the combustion chamber. In this, soot was recognized as shadow. An optical arrangement was made to remove the disturbance of the flame light on the shadowgraph. It also enabled simultaneous photography of the combustion flame on the same film. An image processing system was developed and used for analysis of the photographed results. As a result, soot behavior was successfully observed as a total picture and compared with that of fuel spray and combustion flame. The results of the local measurement by the transmissive light extinction method was explained.