This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Acoustics of Turbochargers
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 15, 2007 by SAE International in United States
Annotation ability available
Noise from turbo-chargers is increasingly becoming an issue. Partly due to improved noise control of other components and partly due to increased specific mass flows. Despite that the turbocharging technique was developed in the first part of the last century the acoustical behavior is still a field where there is a lack of research. In this paper an overview of the existing research is presented including the work done in the EC-project ARTEMIS. Some first results from recently started investigations at the new gas management research centre, KTH CICERO, will also be described.
A turbo-unit always consists of a compressor which normally is driven by an exhaust turbine. Both the turbine and the compressor will have an influence on how the low frequency engine pulsations propagate in the intake/exhaust system. This is referred to as the passive acoustic property of the turbo-unit. If linear acoustic models are applied the passive properties can be described using reflection and transmission coefficients. A turbo-unit will also produce high frequency aerodynamic sound, which is referred to as its active (“sound generating”) acoustic property. The sound generation is associated with the rotating blade pressures and for modern turbo-units, with supersonic tip speeds, also with rotating shock waves (“buzz-saw noise”).
CitationRämmal, H. and Åbom, M., "Acoustics of Turbochargers," SAE Technical Paper 2007-01-2205, 2007, https://doi.org/10.4271/2007-01-2205.
- Morfey C. L., 1972. The acoustics of axial flow machines, Journal of Sound and Vibration 22 (4), 445 - 466.
- Lewis, R, I., 1963. A theoretical investigation of the rotational flow of incompressible fluids through axial turbo-machines with tapered annulus walls, Journal of Mechanical Sciences 6, 51 - 75.
- Wright S. E., 1976. The acoustic spectrum of axial flow machines, Journal of Sound and Vibration 45 (2), 165 - 223.
- Wenzel, W., 2006. Akustikmaβnahmen für aufgeladene Motoren. Motortechnishe Zeitschrift (MTZ) 05/2006, pp. 344 - 351.
- Feld, H-J. and Girsberger, C., 2002. Noise reduction on large turbochargers, Proceedings of 7:th International Conference on Turbochargers and Turbocharging, 14-15 May 2002, London, United Kingdom, pp. 143-152.
- Feld, H-J., Kudernatsch G., Lindblom, C., Girsberger, R. and Rofka, C., 2004. Low-noise turbochargers. Proceedings of CIMAC 2004, Kyoto, Japan, Paper no. 84.
- Raitor, T. and Neise, W., 2006. Sound generation in centrifugal compressors. Proc. of 12th AIAA/CEAS Aeroacoustics Conf., Cambridge, Massachusetts.
- McAlpine, A., Fisher, M. J. and Tester, B. J., 2006: “Buzz-saw” Noise: A comparison of measurement with prediction. Journal of Sound and Vibration, 290, pp. 1202-1233.
- Kameier, F. and Neise, W., 1997. Rotating blade flow instability as a source of noise in axial turbomachines. Journal of Sound and Vibration 203, 833-853.
- Longhouse, R. E., 1978. Control of tip-vortex noise of axial flow fans by rotating shrouds, Journal of Sound and Vibration 58, 201 - 214.
- Fukano, T., Takamatsu, Y. and Kodama, Y. 1986. The effect of the tip clearance on the noise of low pressure axial and mixed flow fans, Journal of Sound and Vibration 105, 291 - 308.
- Peat, K. S., Torregrosa, A. J., Broach, A. and Fermandez, T. 2005. An investigation into the passive acoustic effect of the turbine in automotive turbocharger. Journal of Sound and Vibration 295, 60-75.
- NAS-ARTEMIS 24-month progress report, Deliverable D24, Comparison between turbo group simulation data and experimental data.
- NAS-ARTEMIS Mid-term report, Deliverable D15, Comparison between turbo group simulation data and experimental data.
- Rafael, H., 2000. MSc-thesis: A two-port model for turbo charger compressor and intercooler, TRITA-FKT 2000:01, ISSN 1103-470X, ISRN KTH/FKT/EX-00/01--SE.
- Bodén, H. and Åbom, M., 1995. Modeling of fluid machines as sources of sound in duct and pipe systems, Acta Acustica 3, p. 1-12.
- Watson, N. and Janota, M. S., 1982. Turbocharging the Internal Combustion Engine. Macmillan Publishers Ltd., London.
- Sher, E. and Rakib, S., 1987. A Practical Model for the Performance Simulation of an Automotive Turbocharger. SAE Technical Paper Series 1987.
- Chen, H. and Winterbone, D. E., 1990. A method to predict performance of vaneless radial turbines under steady and unsteady flow conditions, Proceedings of I.Mech.E., Fourth Int. Conf, Turbocharging and Turbochargers, C405/008 (1990).
- Eriksson, L., Nielsen, L., Brugård, J., Bergström, J., Petterson, F. and Andersson, P., 2002. Modelling of a turbocharged SI Engine, Proceedings of Annual Reviews in Control 26 (2002) pp.129-137
- Katrašnik T., 2006. Improved model to determine turbine and compressor boundary conditions with the method of characteristics. Journal of Mechanical Sciences 48, 504 - 516.
- Payri, F., Benajes, J. and Reyes, M., 1995. Modelling of supercharger turbines in internal-combustion engines. Journal of Mechanical Sciences 38, 853 - 869.
- Åbom, M., Fairbrother, R. and Glav, R., 2006. Acoustic modeling for practical intake and exhaust system design. 4:th Styrian NVH Congress, Graz, Austria.
- Mendonça, F., Ferguson, S. and Palfreyman, 2003. Advances in CFD analysis for transient turbocharger flows, QNET-CFD Network Newsletter, Volume 2, No. 3 - December 2003, London, United Kingdom, pp. 31-34.
- Chima, R. V., 1996. Calculation of Tip Clearance Effects in a Transonic Compressor Rotor. ASME Paper GT-114 (Also NASA TM-107216).
- VDI 3733, VDI guideline : Noise at pipes.
- Girsberger R., Kudernatsch G., 2005. Low-noise turbochargers. Turbo Magazine 2/2005, 27 - 31.
- Usuda S., Otsuka, M. and Nagata, M., 2002. JSAE Review 23 (4), 285 - 289. Noise and vibration reduction of newly developed 3.0 l direct injection diesel engine.
- Knutsson, M. and Åbom, M., 2007. Acoustic analysis of charge air coolers. SAE NVH conference paper 2007-01-2208.