Self-ignition of gas in front of the flame front in a closed vessel

The peculiarities of the appearance of thermal self-ignition in front of the flame front in the combustion of a homogenous gas mixture in a closed vessel is studied. The possibility of self-ignition is determined by whether the combustion of the mixture or bulk combustion occur first. The system of equations is included. The self-ignition conditions, the relation between the process parameters, and the basic criterion are studied. Special problems such as the expansion of gas during self-ignition are considered. Finally, the scale factor of self-ignition is considered in light of the tendency to increase the size of technology apparatus of late. The phenomenon of ''knock'' in motors with spark ignition is a practical analog with a solution suggested.