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Experimental and Numerical Analysis of Mechanical Friction Losses in Automotive Turbochargers
Technical Paper
2016-01-1026
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Today turbocharging represents a key technology to reduce fuel consumption and exhaust emissions for both Spark Ignition and diesel engines, moreover improving performance. 1D models, generally employed to compute the engine-turbocharger matching conditions, can be optimized basing on certain information about turbine and compressor behavior. Because of difficulty in the correct evaluation of turbine isentropic efficiency with direct techniques, turbocharger turbine efficiency is generally referred to thermomechanical efficiency. To this aim, the possibility to accurately estimate power losses in turbocharger bearings can allow the assessment of the turbine isentropic efficiency starting from the thermomechanical one. In the paper, an experimental and theoretical study on turbocharger mechanical losses is presented. The proposed model, developed in the MATLAB environment, refers to radial and axial bearings.
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Marelli, S., Gandolfi, S., and Capobianco, M., "Experimental and Numerical Analysis of Mechanical Friction Losses in Automotive Turbochargers," SAE Technical Paper 2016-01-1026, 2016, https://doi.org/10.4271/2016-01-1026.Also In
References
- Serrano , J.R. , Olmeda , P. , Arnau , F.J. , Dombrovsky , A. , Smith L. Turbocharger heat transfer and mechanical losses influence in predicting engines performance by using one-dimensional simulation codes Energy 86 15 June 2015 204 218 10.1016/j.energy.2015.03.130
- Romagnoli , A. , Martinez-Botas , R. Heat Transfer Analysis in a Turbocharger Turbine: An Experimental and Computational Evaluation Applied Thermal Engineering 38 58 77 2012 10.1016/j.applthermaleng.2011.12.022
- Marelli , S. , Marmorato , G. , Capobianco , M. , and Rinaldi , A. Heat Transfer Effects on Performance Map of a Turbocharger Compressor for Automotive Application SAE Technical Paper 2015-01-1287 2015 10.4271/2015-01-1287
- Marelli , S. , Capobianco , M. Steady and pulsating flow efficiency of a waste-gated turbocharger radial flow turbine for automotive application Energy 36 459 465 0360-5442 10.1016/j.energy.2010.10.019 2011
- Serrano , J. , Olmeda , P. , Arnau , F. , Reyes-Belmonte , M. et al. Importance of Heat Transfer Phenomena in Small Turbochargers for Passenger Car Applications SAE Int. J. Engines 6 2 716 728 2013 10.4271/2013-01-0576
- Sirakov , B. , Casey , M. Evaluation of Heat Transfer Effects on Turbocharger Performance Journal of Turbomachinery 2013 021011 10.1115/1.4006608
- Grigoriadis , P. , Binder , E. , Böttcher , L. , Benz , A. et al. Advanced Turbocharger Model for 1D ICE Simulation - Part I SAE Technical Paper 2013-01-0581 2013 10.4271/2013-01-0581
- Winterbone , D.E. , Nikpour , B. , Alexander , G.I. Measurement of the performance of a radial inflow turbine in steady and unsteady flow Conf Turbocharging and Turbochargers Proc Instn Mech Engrs London, United Kingdom 153 162 1990
- Serrano , J. R. , Olmeda , P. , Tiseira , A. , García-Cuevas , L. M. , and Lefebvre , A. Theoretical and experimental study of mechanical losses in automotive turbochargers Energy 55 888 898
- Hamrock , B. J. , Schmid , S. R. , Jacobson Bo , O. Fundamentals of fluid film lubrication CRC Press 2014
- Raimondi , A. A. , Boyd , J. Applying Bearing Theory to the Analysis and Design of Pad-Type Bearings Trans. ASME 77 1955 287 309
- Dubois , G. B. , Ocvirk , F. W. Analytical Derivation and Experimental Evaluation of Short-Bearing Approximation for Full Journal Bearings NACA Report 1157 Cornell University 1953
- Hamrock , B. J. Fundamentals of Fluid Film Lubrication, The Ohio State University Columbus, Ohio 1991
- Marelli , S. , Capobianco , M. Experimental Investigation under Unsteady Flow Conditions on Turbocharger Compressors for Automotive Gasoline Engines Proceedings of 10th International Conference on Turbochargers and Turbocharging 2012 219 229
- Marelli , S. , Carraro , C. , Marmorato , G. , Zamboni , G. , Capobianco , M. Experimental Analysis on Steady Flow Performance under Unstable Operating Conditions and on Surge Limit of a Turbocharger Compressor Experimental Thermal and Fluid Science 53 154 160 February 2014 10.1016/j.expthermflusci.2013.11.025
- Daily , J.W. , Nece , R. E. Chamber Dimension Effects on Induced Flow and Frictional Resistance of Enclosed Rotating Disks Journal of Basic Engineering J. Basic Engineering 217