9.In-cylinder Observation of Diesel Combustion by High Speed Shadowgraphy
　　In this project, a system was developed which allowed the simultaneous photographing of shadowgraphs and direct images of diesel engine combustion flames. Although the principle of the technique is very simple and it is easy to put into practice, it has proven extremely useful in gaining a complete picture of the fuel spray, combustion flame, and soot behavior in diesel engine cylinders.