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Measurement and analysis of exhaust noise from muffler on an excavator

  • Jian-Hua Fang
  • Yi-Qi Zhou
  • Xiao-Dong Hu
  • Li Wang
Article

Abstract

Through analyzing the harm of the exhaust noise from the excavator, this paper illuminated the importance of the noise measurement and analysis work,. According to some correlative measurement standards, using some instruments in hand, a set of exhaust noise measurement system especially for the excavator was designed. The exhaust engine noise from an excavator produced by a construction machinery corporation was measured and analyzed, and then, seven mufflers with different structures were designed. After analyzing the frequency spectrums of seven impedance mufflers of different structures respectively, we selected the muffler j which was of best noise elimination performance among the seven mufflers. The highest noise elimination of muffler j was up to 16.3dB, which could reduce the exhaust noise from the excavator in a larger degree. At last, we analyzed the structures and corresponding effects of noise elimination for the seven mufflers and made some important conclusions.

Keywords

Noise measurement Insertion-loss Muffler Exhaust noise 

Nomenclature

SPL

sound pressure level

A-SPL

A sound pressure level

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References

  1. 1.
    Lee, M. H., Kang, D. B., Kim, H. Y. and Ahn, J. H., ldClassification of geared motor noise using a cepstrum and comb lifter analysis,” IJPEM, Vol. 8, No. 12, pp. 45–49, 2007.Google Scholar
  2. 2.
    Jung, J. K., Youm, W. S. and Park, K. H., ldVibration reduction control of a voice coil motor (VCM) nano scanner,” IJPEM, Vol. 10, No. 3, pp. 167–170, 2009.Google Scholar
  3. 3.
    Tran, V. H. and Lee, S. G., ldEnhanced Wavelet-based Methods for Reducing Complexity and Calculation Time in Sonar Measurements,” IJPEM, Vol. 10, No. 2, pp. 31–37, 2009.Google Scholar
  4. 4.
    Hamochi, M. and Wakui, S., ldImage noise reduction using structural mode shaping for scanning electron microscopy,” IJPEM, Vol. 9, No. 2, pp. 28–33, 2008.Google Scholar
  5. 5.
    Zhang, Y.-B. and Li-Jun, E., ldSimple introduction of harm of noise from automobile and its control,” Chinese Science and Technology Information, Vol. 6, pp. 108–110, 2006.Google Scholar
  6. 6.
    Singh, R. and Katra, T., ldDevelopment of an impulse technique for measurement of muffler characteristics,” Journal of Sound and Vibration, Vol. 56, No. 2, pp. 279–298, 1978.CrossRefGoogle Scholar
  7. 7.
    Ling, Z.-Y., ldThe method of measuring noise radiated from the submarine,” Acoustics and Electronic Engineering, Vol. 2, pp. 28–29, 2004.Google Scholar
  8. 8.
    Cheng, F.-B. and Tang, B.-P., ldApplication of Sound Intensity Technique to Measure the Noise of Electromotor,” Journal of Chongqing University: Natural Science Edition, Vol. 27, No. 11, pp. 11–14, 2004.Google Scholar
  9. 9.
    Luo, H. and Yu, W.-G., ldApplication of Sound Intensity Measurement Method in Spotting the Noise Source of Engine Surface,” Journal of Chongqing University: Natural Science Edition, Vol. 28, No. 6, pp. 9–14, 2005.Google Scholar
  10. 10.
    Yue, D.-P. and Hao, Z.-Y., ldExperimental Study on Noise Sources Identifications of Diesel Engine,” Chinese Journal of Mechanical Engineering, Vol. 40, No. 6, pp. 192–195, 2004.CrossRefGoogle Scholar
  11. 11.
    Ma, D.-Y., ldSummary of noise and vibration measurement: Chap. 1, in Noise and vibration control engineering handbook,” Mechanical Industry Press, pp. 153–229, 2002.Google Scholar
  12. 12.
    National standards of the People’s Republic of China, ldMeasurement procedure for exhaust silencers of internal combustion engines,” GB/T 4759-1995.Google Scholar
  13. 13.
    Ministry of Environmental Protection the People’s Republic of China, ldTechnical Guidelines for Noise Impact Assessment,” 1996.Google Scholar
  14. 14.
    Wang, P. and Lin, L.-H., ldNoise Measurement of the J-50 tractor and design of the exhaust muffler,” Forest Project, Vol.13, No 3, pp. 40–43, 1997.Google Scholar
  15. 15.
    Wang, Z.-X. and Qiao, W.-Y., ldThe Measurement and Analysis of Exhaust Noise of APU on MA60 Aircraft,” Noise and Vibration Control, Vol. 23, No. 3, pp. 43,44,48, 2003.MathSciNetGoogle Scholar
  16. 16.
    Chen, K.-A., Zeng, X.-Y. and Li, H.-Y., ldAcoustic apparatus and acoustic establishments: Chap.4 in Acoustic Measurement,” China Science Press, pp. 72–78, 2005.Google Scholar

Copyright information

© Korean Society for Precision Engineering and Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Jian-Hua Fang
    • 1
  • Yi-Qi Zhou
    • 1
  • Xiao-Dong Hu
    • 2
  • Li Wang
    • 1
  1. 1.Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Ministry of Education, School of Mechanical EngineeringShandong UniversityJinanChina
  2. 2.Shandong University of Science TechnologyQingdaoChina

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