Experimental investigation of an efficient method for measuring turbocharger maps

Pfeffer, Kathleen; Eißler, Werner

The recording of turbocharger maps is usually ensured through measuring points on constant speed lines at a quasi-steady operating point of the turbocharger. Operating points can be controlled by the parameters hot gas mass flow and gas temperature on the turbine side of the turbocharger as well as the output air flow resistance at the compressor side. Because of the simultaneous usage of the controls, long settling times are required to reach a turbocharger operating point that can be assumed to be stationary. The present paper takes up that even transient measured characteristic operation points are comparable to stationary measured ones. Influences from a transient operation mode on characteristic diagrams for compressor and turbine are investigated experimentally. By transient operation for t/c map measurement, the possibility of a significant time saving is expected compared to that of quasi-steady operating points.

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Pfeffer, Kathleen / Eißler, Werner: Experimental investigation of an efficient method for measuring turbocharger maps. Ilmenau 2017.

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