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“Herschel-Quincke Spiral” A New Interference Silencer
Technical Paper
2003-01-1722
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Over the last ten years there has been a steady growth in the market share of light-duty diesel engines, especially in Europe. At the same time, a general trend in petrol engine development has been seen, in which normal aspirated engines are being replaced by downsized turbocharged engines. Therefore, NVH engineers have to deal with new challenges. Turbochargers produce an aerodynamic noise in the frequency range above 1000Hz, which might influence the exterior and interior noise level. As a result, the additional requirement for acoustical components to reduce this flow noise is going to pose an increasing challenge for air intake system suppliers.
This paper describes a new design of well-known wide band silencer first mentioned by A. Selamet, N.S.Dickey and J.M.Novak [1,2]. The silencer works according to the interference principle. The sound is guided into two or more parallel pipes of different lengths. The difference in length can be tuned to certain frequencies so that the waves in the different pipes cancel out each other if the phase difference is 180 degrees. The new design is well suited for difficult packaging requirements and can be easily manufactured by a rotary core molding process.
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Topic
Citation
Graefenstein, A. and Wenzel, W., "“Herschel-Quincke Spiral” A New Interference Silencer," SAE Technical Paper 2003-01-1722, 2003, https://doi.org/10.4271/2003-01-1722.Also In
SAE 2003 Transactions Journal of Passenger Cars - Mechanical Systems
Number: V112-6; Published: 2004-09-15
Number: V112-6; Published: 2004-09-15
References
- “A TIME DOMAIN COMPUTATIONAL SIMULATION OF ACOUSTIC SILENCERS” The American Society of American Engineers Selamet A. Dickey N.S. Novak J.M. 147 Computational AERO-And Hydro-Acoustics 1993
- “The Herschel-Quincke tube: A theoretical, computational, and experimental investigation” The JOURNAL of the Acoustical Society of America Selamet A. Dickey N.S. 96 5 NOVEMBER 1994
- “A new type of silencers for turbocharger noise control” Trochon Eric P. PSA PEUGEOT CITROËN SAE Paper 2001-01-1436
- “ACOUSTICS OF DUCTS AND MUFFLER” Munjal M. L. JOHN WILEY & SONS 1987 58 241