Turbocharger performance maps used for the matching process with a combustion engine are measured on test benches which do not exhibit the same boundary conditions as the engine. However, these maps are used in engine simulations, ignoring that the compressor and turbine aerodynamic performance is rated on the basis of quantities which were measured at positions which do not coincide with the respective system boundaries of the turbomachinery. In the operating range of low to mid engine speeds, the ratio between the heat flux and the work done by the turbine and the compressor is much greater than at high speeds where heat transfer phenomena on the compressor side can usually be neglected. Heat losses on the turbine side must be taken into account even at higher shaft speeds when dealing with isentropic turbine efficiencies. Based on an extensive experimental investigation, a one-dimensional heat transfer model is developed. The compressor and turbine side are treated individually and divided into sections of inlet, wheel, outlet, diffuser, and volute. The model demonstrates the capability to properly account for the impact of heat transfer, and thereby improves the predictive accuracy of temperatures relevant for the matching process.
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February 2017
Research-Article
Heat Transfer Correction Methods for Turbocharger Performance Measurements
Mario Schinnerl,
Mario Schinnerl
Continental Automotive GmbH,
Regensburg D-93055, Germany
e-mails: mario.schinnerl-ext@continental-corporation.com and
mario.schinnerl@continental-corporation.com
Regensburg D-93055, Germany
e-mails: mario.schinnerl-ext@continental-corporation.com and
mario.schinnerl@continental-corporation.com
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Joerg Seume,
Joerg Seume
Institute of Turbomachinery and Fluid Dynamics,
Leibniz Universitaet Hannover,
Hannover D-30511, Germany
e-mail: seume@tfd.uni-hannover.de
Leibniz Universitaet Hannover,
Hannover D-30511, Germany
e-mail: seume@tfd.uni-hannover.de
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Jan Ehrhard,
Jan Ehrhard
Continental Automotive GmbH,
Regensburg D-93055, Germany
e-mail: jan.ehrhard@continental-corporation.com
Regensburg D-93055, Germany
e-mail: jan.ehrhard@continental-corporation.com
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Mathias Bogner
Mathias Bogner
Continental Automotive GmbH,
Regensburg D-93055, Germany
e-mail: mathias.bogner@continental-corporation.com
Regensburg D-93055, Germany
e-mail: mathias.bogner@continental-corporation.com
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Mario Schinnerl
Continental Automotive GmbH,
Regensburg D-93055, Germany
e-mails: mario.schinnerl-ext@continental-corporation.com and
mario.schinnerl@continental-corporation.com
Regensburg D-93055, Germany
e-mails: mario.schinnerl-ext@continental-corporation.com and
mario.schinnerl@continental-corporation.com
Joerg Seume
Institute of Turbomachinery and Fluid Dynamics,
Leibniz Universitaet Hannover,
Hannover D-30511, Germany
e-mail: seume@tfd.uni-hannover.de
Leibniz Universitaet Hannover,
Hannover D-30511, Germany
e-mail: seume@tfd.uni-hannover.de
Jan Ehrhard
Continental Automotive GmbH,
Regensburg D-93055, Germany
e-mail: jan.ehrhard@continental-corporation.com
Regensburg D-93055, Germany
e-mail: jan.ehrhard@continental-corporation.com
Mathias Bogner
Continental Automotive GmbH,
Regensburg D-93055, Germany
e-mail: mathias.bogner@continental-corporation.com
Regensburg D-93055, Germany
e-mail: mathias.bogner@continental-corporation.com
1Corresponding author.
Contributed by the Turbomachinery Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received June 17, 2016; final manuscript received July 11, 2016; published online September 13, 2016. Editor: David Wisler.
J. Eng. Gas Turbines Power. Feb 2017, 139(2): 022602 (9 pages)
Published Online: September 13, 2016
Article history
Received:
June 17, 2016
Revised:
July 11, 2016
Citation
Schinnerl, M., Seume, J., Ehrhard, J., and Bogner, M. (September 13, 2016). "Heat Transfer Correction Methods for Turbocharger Performance Measurements." ASME. J. Eng. Gas Turbines Power. February 2017; 139(2): 022602. https://doi.org/10.1115/1.4034234
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