This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Simulation of Sound Transmission through Automotive Turbochargers
Technical Paper
2012-01-1560
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The use of turbochargers for production cars has been increasing due to the current trend of engine downsizing. Acoustically, it acts as a damper of the pressure pulsations from the engine that propagate through the intake and exhaust system. This effect is referred to as the passive acoustic properties of a turbocharger. The aim of this paper is to investigate the passive acoustic properties of an automotive turbocharger compressor and turbine and to develop and verify an acoustical model of the turbocharger.
To investigate the acoustic properties such as the transmission loss and the transfer function through these elements under different operating conditions, acoustic two-port measurements were performed on a turbocharger test rig at different flow conditions. A geometry-based acoustical model of the turbocharger was developed for both the compressor and turbine to provide both the transmission loss and the transfer function of these elements and verified by means of non-linear time-domain 1-D gas dynamics simulation.
A good agreement between measurement and simulation of the upstream and downstream acoustic transmission loss of the turbocharger was achieved and it also illustrates an improvement of simulation quality using the new models.
Recommended Content
Authors
Citation
Veloso, R., Elnemr, Y., Reich, F., and Allam, S., "Simulation of Sound Transmission through Automotive Turbochargers," SAE Technical Paper 2012-01-1560, 2012, https://doi.org/10.4271/2012-01-1560.Also In
References
- Heywood, J.B. Internal combustion engine fundamentals McGraw-Hill New York 248 70 1988
- Baines, Nicholas C Fundamentals of Turbocharging Concepts ETI 0-933283-14-8 2005
- Rämmal, H. Åbom, M. “Acoustics of Turbochargers,” SAE Technical Paper 2007-01-2205 2007 10.4271/2007-01-2205
- Raitor, T. Neise, W. Sound generation in centrifugal compressors Journal of Sound and Vibration 314 738 756 2008
- Alenius, Emma CFD of Duct Acoustics for Turbocharger Applications Licentiate Thesis, TRITA-AVE 2010:71 1651-7660 978-91-7415-828-1 Stockholm, Sweden 2010
- Rafael, H. MSc-thesis: A two-port model for a turbo charger compressor and intercooler, TRITA-FKT 2000:01 1103-470X 2000
- Peat, K.S. Torregrosa, A. J. Broatch, A. Fernandez, T. An investigation into the passive acoustic of the turbine in automotive turbocharger Journal of Sound and Vibration 295 60 75 2005
- Stewart, G. W. The theory of the Herschel-Quincke tube Physical Review 31 696 698 1928
- Rämmal, H. Galindo, J. The passive acoustic effect of turbo-compressors 9th International Conference on Turbochargers and Turbocharging Institution of Mechanical Engineers London, UK 2010
- Torregrosa, A. J. Broatch, A. Climent, H. Fernandez, T. Time-domain modeling of turbo-compressors in direct injection diesel engines Proc. IMechE Part D: J. Automobile Engineering 220 2010
- Rämmal, H. Åbom, M. “Experimental Determination of Sound Transmission in Turbo-Compressors,” SAE Technical Paper 2009-01-2045 2009 10.4271/2009-01-2045
- Elnemr, Yasser Acoustic Modeling and Testing of Exhaust and Intake System Components Licentiate Thesis, TRITA-AVE 2011:51 1651-7660 Stockholm, Sweden 2011
- Veloso, Rafael An investigation into the passive acoustic effect of an automotive turbocharger compressor Master Thesis Stockholm, Sweden 2010
- Rämmal, H. Åbom, M. Tiikoja, H. Bodén, H. “Experimental Facility for the Complete Determination of Sound Transmission in Turbochargers,” SAE Technical Paper 2010-01-1424 2010 10.4271/2010-01-1424
- Tiikoja, H. Rämmal, H. Abom, M. Boden, H. “Sound Transmission in Automotive Turbochargers,” SAE Technical Paper 2011-01-1525 2011 10.4271/2011-01-1525
- Tao, Z. Seybert, A. “A Review of Current Techniques for Measuring Muffler Transmission Loss,” SAE Technical Paper 2003-01-1653 2003 10.4271/2003-01-1653
- AVL BOOST v2010 Users Guide, Edition 2010
- Giannattasio, P. Dadone, A. Applications of a High Resolution Shock Capturing Scheme to the Unsteady Flow Computation in Engine Ducts Inst. Mech. Eng. C 1991
- Harten, A. Engquist, B. Osher, S. Chakravarthy, S. Uniformly high order accurate essentially non-oscillatory schemes III Journal of Computational Physics 71 231 303 1987