Abstract
Based on theoretical analysis and numerical simulation, the paper analyzes standing wave mechanism in exhaust system. The standing waves are founded in the exhaust orifice noise from a vehicle testing. An acoustic model for the exhaust system is established, and orders’ acoustic characteristics for the tailpipe noise are analyzed where a resonant peak is caused by the standing wave. A method is proposed to eliminate the standing wave noise by inserting a perforated resonator on the tailpipe. Three resonators with different volumes are compared, and the best one is chosen to control the low-frequency standing wave noise.
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Zhang, S., Pang, J., Zhang, H., Yang, L., Qing, W. (2015). Phenomenon and Analysis of Low-Frequency Standing Wave Inside Exhaust System. In: Proceedings of SAE-China Congress 2014: Selected Papers. Lecture Notes in Electrical Engineering, vol 328. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-45043-7_34
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DOI: https://doi.org/10.1007/978-3-662-45043-7_34
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Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-662-45042-0
Online ISBN: 978-3-662-45043-7
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