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Uncertainty and Measurement Sensitivity of Turbocharger Compressor Gas Stands
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 08, 2013 by SAE International in United States
Annotation ability available
Turbocharger performance is described in terms of compressor and turbine characteristics or operating maps. Reliable definition of the compressor map requires the accurate determination of the mass flow range, the boost pressure capability, and the efficiency of the compressor. Even though computational fluid dynamics provides significant information for the design of a given compressor, field testing is required to validate the actual compressor performance that will be delivered to the end-user. Hence, the precision and accuracy of the experimental facility are of vital importance, both regarding turbocharger development and customer needs.
In this paper, uncertainty analysis is carried out to evaluate the propagation of measurement errors into the calculation of compressor performance characteristics. Uncertainty equations are derived from a simplified compressor data reduction code and applied to a typical set of experimental data. The uncertainty of an entire sample compressor map is computed to evaluate the repeatability of a given set of instrumentation. Sensitivity analysis is conducted to discuss the choice of instrumentation and identify the data acceptance limits and criteria. The issues in measuring a large flow range, the high sensitivity of compressor efficiency to temperature measurements, as well as the impact from correction factors, are highlighted. The overall study intends to describe the challenges of mapping and comparing compressor maps from different gas stand designs.
CitationGuillou, E., "Uncertainty and Measurement Sensitivity of Turbocharger Compressor Gas Stands," SAE Technical Paper 2013-01-0925, 2013, https://doi.org/10.4271/2013-01-0925.
- Brun , K. , and Kurz , R. Measurement Uncertainties Encountered During Gas Turbine Driven Compressor Field Testing J. Eng. Gas Turbines Power 123 62 69 2001 10.1115/1.1340628
- Mothar , H. , Chesse , P. , and Chalet , D. Describing Uncertainties Encountered During Laboratory Turbocharger Compressor Tests SEM Technical Article 2011 10.1111/j.1747-1567.2011.00734.x
- Brun , K. , and Nored , M., G. Guideline for Field Testing of Gas Turbine and Centrifugal Compressor Performance Gas Machinery Research Council and Southern Research Institute 2006
- Chapman , K., S. Guidelines for Testing Large-Bore Engine Turbochargers NGML Turbocharger Test Guideline 2003
- SAE International Surface Vehicle Recommended Practice Turbocharger Gas Stand Test Code SAE Standard J1826 Mar. 1995
- ASME Performance Test Code Performance Test Code on Compressors and Exhausters ASME PTC 10-1997 1998
- VDI Guideline Acceptance and Performance Tests on Turbo Compressors and Displacement Compressors VDI 2045 1993
- Andersen , J. , Lindstrom , F. , and Westin , F. Surge Definitions for Radial Compressors in Automotive Turbochargers SAE Int. J. Engines 1 1 218 231 2009 10.4271/2008-01-0296
- Aretakis , N. , Mathioudakis , K. , Kefalakis , M. , and Papailiou , K. Turbocharger Unstable Operation Diagnosis Using Vibroacoustic Measurements J. Eng. Gas Turbines Power 126 4 840 847 2004 10.1115/1.1771686
- Gancedo , M. , Guillou , E. , Gutmark , E. , and Mohamed , A. Dynamic Features and their Propagation in a Centrifugal Compressor Housing with Ported Shroud SAE Technical Paper 2012-01-0706 2012 10.4271/2012-01-0706
- Sirakov , B. , and Casey , M. Evaluation of Heat Transfer Effects on Turbocharger Performance ASME Paper GT2011-45887 2075 2086 10.1115/GT2011-45887
- ISO/IEC Guide 98-3 2008 Evaluation of Measurement data - Guide to the Expression of Uncertainty in Measurement (GUM:1995) JCGM 100 2008 2008
- Kline , S., K. and McClintock , F., A. Describing Uncertainty in Single Sample Experiments IMecH Mechanical Engineering 75 3 1953
- International Standard Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full ISO 5167-1 2003