Noise Test and Analysis of Automobile Engine

Yan Liu; Yan Bin Jia; Xiao Juan Zhang; Zong Cai Liu; Yong Chao Ren; Bing Yang

doi:10.4028/www.scientific.net/AMM.307.196

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 307Noise Test and Analysis of Automobile Engine

Noise Test and Analysis of Automobile Engine

Abstract:

To test different car’s noise in a semi-anechoic room with different engine’s speed, measure and analysis engine noise’s characteristics and the dash panel’s sound insulation quantity. The conclusion is that：the engine noise gets bigger 10 dB(A) when engine speeds up every 1000 r/min; engine noise’s frequency mainly distributed in 1600 ~ 4000 Hz; peak part concentrates in the range 100 ~ 400 Hz; engine noise has no direct relation to engine’s displacement; cab noise frequency mainly concentrated in the range 250 ~ 630 Hz and the peaks exist in the intermediate and low frequency part, the high frequency part attenuates obviously which show the car’s dash panel has a good noise insulation and absorption effect in the high frequency part but not too ideal at the intermediate and low frequency especially in the range 250 ~ 630 Hz. These results have high practical value for the design of the automotive to decline noise and vibration.

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Periodical:

Applied Mechanics and Materials (Volume 307)

Pages:

196-199

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.307.196

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Online since:

February 2013

Authors:

Yan Liu, Yan Bin Jia, Xiao Juan Zhang, Zong Cai Liu, Yong Chao Ren, Bing Yang

Keywords:

Dash Panel, Engine, Noise, Sound Insulation

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References

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