APPROACHES TO IMPROVEMENT OF TURBOCHARGERS FOR AUTOMOTIVE ENGINES

This article discusses approaches to improvement of a boost system of internal combustion engines. It reviews different existing and promising boost systems, including positive-displacement and centrifugal compressors, turbochargers and combined boost systems, which encapsulate mechanical and electrical compressors. The article demonstrates that boost systems give a positive effect on the working parameters of a power unit. A comparative analysis of the systems regarding occupied volume, efficiency of its compressor and drive units, compression ratio was held. It revealed advantages and disadvantages of different units as well as their influence on the internal combustion engine characteristics. The performed analysis made it possible to choose the most efficient and promising directions of further research, aimed at improvement of the operation characteristics of vehicles by means of boost systems.