COMPARATIVE ANALYSIS OF EG NOISE SUPPRESSION SYSTEMS

This article reviews up-to-date systems of exhaust gas noise suppression and their influence on operation specification of vehicles. Various alternatives of existing and under design exhaust systemS are discussed, including resonators and absorbers, as well as active systems of noise suppression which require for additional power source. Positive influence of thermoacoustic effect is demonstrated, properties of porous materials are discussed with regard to intensification of heat exchange. The exhaust systems are compared in terms of suppression extent, weight and sizes, resistance against flow, complexity of fabrication and cost. Positive and negative trends are revealed and their influence on vehicle performances. On the basis of the performed analysis the relevant findings are obtained and the most efficient and promising trends of further researchers are determined aimed at improvement of operation performances of vehicles by means of active exhaust systems.