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.
Original language | English |
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Journal | SAE Technical Papers |
Volume | 2019-June |
Issue number | June |
DOIs | |
State | Published - Jun 5 2019 |
Event | 2019 SAE Noise and Vibration Conference and Exhibition, NVC 2019 - Grand Rapids, United States Duration: Jun 10 2019 → Jun 13 2019 |
Bibliographical note
Publisher Copyright:© 2019 SAE International. All Rights Reserved.
ASJC Scopus subject areas
- Automotive Engineering
- Safety, Risk, Reliability and Quality
- Pollution
- Industrial and Manufacturing Engineering