EVALUATION OF PARAMETERS OF DESIGNED CAPACITIVE OSCILLATING DISCHARGE IGNITION SYSTEMS TAKING INTO ACCOUNT THE PECULIARITIES OF THE MECHANISM OF ELECTROSPARK FLAME STABILIZATION

Relevance As a rule, the design of capacitive ignition systems for gas turbine enginеs (GTE) is carried out without taking into account the peculiarities of ignition processes of fuel-air mixtures and peculiarities of possible mechanisms of flame stabilization in starting igniters and combustion chambers. In this case, the design is associated with a large amount of testing and finalization work in the conditions of specific engines. Modern achievements in the field of research of spark ignition processes of combustible mixtures allow to reduce the time and money spent on the design of ignition systems. The research in this article is aimed at solving this urgent problem. Aim of research Calculated determination of the storage capacitor capacitance value in the capacitive ignition system based on the joint consideration of discharge processes and peculiarities of electrospark flame stabilization in combustion devices. Research methods The research was carried out on the basis of mathematical analysis methods in relation to the development of a new approach to the design of discharge circuits with semiconductor candles, which consists in the use of the criterion of the ignition capacity of capacitive ignition systems taking into account the mechanism of electrospark flame stabilization in starting igniters and combustion chambers of GTE. Results The relationship between the parameters of capacitive ignition systems and the characteristics of the mixture in the process of ignition and electrospark flame stabilization is shown; a calculation expression for determining the necessary value of the capacitance of the storage capacitor of the capacitive ignition system according to the given parameters of the discharge circuit and the fuel-air mixture in combustion devices is obtained.