Change search
ReferencesLink to record
Permanent link

Direct link
Simulation of sound transmission through automotive turbochargers
KTH, School of Industrial Engineering and Management (ITM), Centres, Competence Center for Gas Exchange (CCGEx).
2012 (English)In: SAE Technical Paper 2012-01-1560, 2012, 2012Conference paper (Refereed)
Abstract [en]

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.

Place, publisher, year, edition, pages
Keyword [en]
Acoustic properties, Computer simulation, Exhaust systems (engine), Superchargers, Transfer functions, Turbines, Wave transmission
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-131359DOI: 10.4271/2012-01-1560ScopusID: 2-s2.0-8487716749OAI: diva2:656603
7th International Styrian Noise, Vibration and Harshness Congress: The European Automotive Noise Conference, SNVH 2012; Graz; Austria; 13 June 2012 through 15 June 2012

QC 20131016

Available from: 2013-10-16 Created: 2013-10-14 Last updated: 2013-10-16Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Allam, Sabray
By organisation
Competence Center for Gas Exchange (CCGEx)
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 40 hits
ReferencesLink to record
Permanent link

Direct link