The influence of the turbocharger turbine on thermal mechanical characteristics of the flow in the piston engine exhaust tract

Abstract

The paper considers the results of experimental studies of the influence of the turbocharger turbine on thermal mechanical characteristics of the flow during exhaust process. The experimental investigations were carried out on full-sized models of one-cylinder ICE. The experimental unit and research methods are described. The authors present the analysis of dependences of change of instantaneous velocity and pressure of the stream, the local heat transfer coefficient in the exhaust channel of the engine from the crank angle. The data are obtained for the engine with turbocharger and without it. It is shown that the placement of the turbocharger turbine in piston ICE gas tract significantly affects the gas dynamic and heat transfer characteristics of the release process. Installing the turbocharger causes the reconstruction of the structure and flow regime in the exhaust channel.