TY - GEN
T1 - Study on identification of noise resources and truck's noise reduction
AU - Li, Huibin
AU - Liu, Jichun
AU - Yuan, Weiping
AU - Shangguan, Yunfei
PY - 2008
Y1 - 2008
N2 - As for external acceleration noise of the heavy trucks beyond the standard, spectrum analysis, near field sound pressure measuring method and sound intensity measurement were employed to measure the change regularity of sound level with engine speed under the condition of static and dynamic state. After the noise distribution of the whole truck surface is compared, the noise resources, produced by main components, are identified and analyzed. The research results show that the fan, fuel pump, oil pan and turbocharger noises are the main factors of external accelerating noise. The whole truck accelerating noise is obviously reduced by taking different measures, and the maximum reduction value is over 6dB (A).
AB - As for external acceleration noise of the heavy trucks beyond the standard, spectrum analysis, near field sound pressure measuring method and sound intensity measurement were employed to measure the change regularity of sound level with engine speed under the condition of static and dynamic state. After the noise distribution of the whole truck surface is compared, the noise resources, produced by main components, are identified and analyzed. The research results show that the fan, fuel pump, oil pan and turbocharger noises are the main factors of external accelerating noise. The whole truck accelerating noise is obviously reduced by taking different measures, and the maximum reduction value is over 6dB (A).
UR - http://www.scopus.com/inward/record.url?scp=84861539802&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84861539802
SN - 9781605600666
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
BT - IMAC-XXVI
T2 - 26th Conference and Exposition on Structural Dynamics 2008, IMAC-XXVI
Y2 - 4 February 2008 through 7 February 2008
ER -