A television viewing system with a high speed shutter TV camera has been developed for viewing and recording combustion processes in internal combustion engines. The technique has been applied to the study of combustion events in an engine with a transparent piston. The recorded combustion images were analyzed and statistically processed by a microcomputer for summation, averaging, and contour forming. The averaged flame propagation patterns are discussed in comparison with the gas flow motion and cylinder pressure data obtained by conventional methods. This TV technique is easy and effective in obtaining combustion data for various operating conditions and engine geometries.