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CLC number: TB53

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Received: 2005-01-17

Revision Accepted: 2005-05-12

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Cited: 3

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Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE A 2005 Vol.6 No.10 P.1107~1114

10.1631/jzus.2005.A1107


Virtual design and performance prediction of a silencing air cleaner used in an I.C. engine intake system


Author(s):  HAO Zhi-yong, JIA Wei-xin, FANG Fang

Affiliation(s):  College of Mechanical and Energy Engineering, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   haozy@zju.edu.cn, jiawx@zju.edu.cn

Key Words:  Virtual design, Acoustic performance, Silencing air cleaner, Boundary element method (BEM)


HAO Zhi-yong, JIA Wei-xin, FANG Fang. Virtual design and performance prediction of a silencing air cleaner used in an I.C. engine intake system[J]. Journal of Zhejiang University Science A, 2005, 6(10): 1107~1114.

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DOI - 10.1631/jzus.2005.A1107


Abstract: 
This paper reports results of the authors’ studies on the virtual design method used in the development of low noise intake system of I.C. engine. The resulting high pass-by noise at level above the legislative target at full throttle when engine speed was around 5200 r/min necessitated a BEM-aided redesign task, following the typical process of design and development of an intake system. During the initial design, based on the acoustic theory and the requirements (1. The air flux of the redesigned should equal to or exceed the value of the original flux; 2. The filtering area must not be degraded), and considering the constraint of space in the engine compartment, total volume and rough internal dimensions were determined. During the detailed design, the exact internal dimensions of the air cleaner were determined, and an effective method was applied to improve the acoustic performance at low frequency. The predicted sound power of the intake system indicated that the objective of reducing the overall engine noise by minimizing intake system noise was achieved.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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[7] Park, C.M., Ih, J.G., Nakayama, Y., Kitahara, S., 2002. Measurement of acoustic impedance and prediction of transmission loss of the porous woven hose in engine intake systems. Applied Acoustics, 63:775-794.

[8] Selamet, A., Radavich, P.M., 1995. The Effect of Length on the Acoustic Attenuation Performance of Concentric Expansion Chambers: An Analytical, Computational, and Experimental Investigation. SAE 950544, p.1000-1011.

[9] Wu, T.W., Cheng, C.Y.R., Tao, Z., 2003. Boundary element analysis of packed silencers with protective cloth and embedded thin surfaces. Journal of Sound and Vibration, 261:1-15.

[10] Xu, X.M., 2003. Fundamental of Acoustic. Publishing Company of Scientist, Beijing, p.183-196 (in Chinese).

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