Interconnection of propagation velocity and electrical conductivity of flame in ICEs

Abstract

Investigation of regularities of interrelation between the local propagation velocity and electrical conductivity of flame with varying composition of the mixture in a spark-ignition engine was conducted. The electrical conductivity and the velocity of flame propagation near the spark plug with the average temperature in the combustion chamber being practically constant vary in the conditions of the experiment carried out. The power dependence between electrical conductivity and propagation velocity of flame is revealed in case the air-fuel ratio changes. This can be described by power dependence. The electrical conductivity of flame is shown to depend on the speed of chemical reactions in confined turbulent combustion. The results of the research can be used to develop methods of diagnosing local intensity of burning in combustion chambers.