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Development of a Muffler Insertion Loss Flow Rig
Technical Paper
2019-01-1482
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Bench tests are an important step to developing mufflers that perform adequately with acceptable pressure drop. Though the transmission loss of a muffler without flow is relatively simple to obtain using the two-load method, the presence of mean flow modifies the muffler behavior. The development of an insertion loss test rig is detailed. A blower produces the flow, and a silencer quiets the flow. Acoustic excitation is provided by a loudspeaker cluster right before the test muffler. The measurement platform allows for the measurement of flow-induced noise in the muffler. Also, the insertion loss of the muffler can be determined, and this capability was validated by comparison to a one-dimensional plane wave model.
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Citation
Chen, J. and Herrin, D., "Development of a Muffler Insertion Loss Flow Rig," SAE Technical Paper 2019-01-1482, 2019, https://doi.org/10.4271/2019-01-1482.Data Sets - Support Documents
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