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Minimising Turbocharger Whoosh Noise for Diesel Powertrains
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 16, 2005 by SAE International in United States
Annotation ability available
Diesel vehicle buyers in Europe are now able to select from a wide range of desirable products with excellent performance and levels of refinement competitive with gasoline engine products. However, the trend towards higher ratings and increased low speed torque appears to have resulted in increased levels of turbocharger generated flow or ‘whoosh’ noise.
This paper discusses the phenomenon of turbocharger whoosh and its impact on powertrain  and vehicle level NVH  focusing on:
- Possible mechanisms for whoosh noise occurrence
- The effect of turbocharger compressor selection on whoosh noise
- Mechanisms for the radiation of whoosh noise
- Potential countermeasures for reducing turbocharger whoosh
Case studies are drawn from a range of relevant powertrain NVH projects to illustrate the turbocharger whoosh noise development process.
The paper includes an insight to the future development of predictive tools for the whoosh noise phenomenon.
|Technical Paper||Acoustics of Turbochargers|
|Technical Paper||NVH Target Cascading from Customer Interface to Vehicle Subsystems|
|Technical Paper||Improved Method for FRF Acquisition for Vehicle Body NVH Analysis|
CitationEvans, D. and Ward, A., "Minimising Turbocharger Whoosh Noise for Diesel Powertrains," SAE Technical Paper 2005-01-2485, 2005, https://doi.org/10.4271/2005-01-2485.
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