Investigations on Pulsating Turbine Flow: Determination of turbine power und the influence of pulsating exhaustgas admission

Abstract

During recent years a research project concerning the influence of pulsating turbine admission on the flow and efficiency properties of the turbocharger turbine has been carried out at the institute of internal combustion engines at the technical university of Berlin. Qualifying the differences between steady state and pulsating admission was the major aspect of the project. During the project experimental investigations as well as multiple one dimensional simulations and three dimensional CFD simulations have been carried out. Those investigation allowed a detailed view into the turbine during pulse admission and information about the course of the torque at the turbine shaft could be gained. Furthermore a recommendation for the application of pulse admissioned tubines in 1-D engine process simulation has been derived.