Commissioning of a Test Stand for Turbocharger Investigations at Constant Turbine Inlet Temperatures
Résumé
In this paper, the developed turbocharger test stand design at the IKDG facility is evaluated. The specific characteristics of the test stand as well as operational test data is discussed. A test turbocharger is thermodynamically examined in regard of operation at 220•C turbine inlet temperature. An overview of the measurement instrumentation is given and the thermodynamic parameters of the turbocharger necessary for generating a power map, are presented. The key aspect of providing a constant turbine inlet temperature necessary for the acquisition of reliable performance measurements is varied by means of an operation point stability analysis at different rotational speeds across the whole operating range of the test turbocharger. Additionally, an uncertainty analysis of the temperature and pressure measurement instrumentation according to DIN V ENV 13005 and [1] is conducted. Based on these results, a performance map of the compressor as well as the turbine of the turbocharger is generated and discussed. The paper is concluded by providing an outlook regarding the possibilities of upgrading the performance measurement instrumentation in the existing test stand design as well as upgrading certain parts of the test stand.
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