Design of turbocharged engine intake silencer and numerical analysis of acoustic attenuation performance

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (10) : 193-196.

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Design of turbocharged engine intake silencer and numerical analysis of acoustic attenuation performance

LIU Li-yuan; JI Zhen-lin

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Abstract

According to the characteristics of turbocharged engine intake noise, two kinds of intake silencers are designed, and the finite element models for the intake silencers were created. By using the corrected expres-sion of the acoustic impedance of perforation in contact with fibrous material and the acoustic characteristic pa-rameters of aluminum silicate, transmission loss of the silencers is predicted, and the FEM predictions agree rea-sonably well with experimental results. Finally, the effects of combined structure on the acoustic attenuation per-formance of intake silencers are analyzed.

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turbocharged engine / intake silencer / acoustic characteristics / numerical analysis / experimental measurement

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LIU Li-yuan;JI Zhen-lin. Design of turbocharged engine intake silencer and numerical analysis of acoustic attenuation performance[J]. Journal of Vibration and Shock, 2011, 30(10): 193-196