The Modeling and Design of a Reactive Muffler to Reduce a Low Frequency Tone Kato Consulting

Format:

Conference/Event

Author/Creator:

Kato, Kato, author.

Contributor:

Jones, Dave

Seybert, Andy

Conference Name:

SAE 2013 Noise and Vibration Conference and Exhibition (2013-05-20 : Grand Rapids, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2013

Summary:

Large reciprocating engines produce a tonal spectrum of sound radiating from their exhaust. Even after standard reactive mufflers and after-treatment devices are added, and the target A-weighted sound level has been achieved, very audible low frequency tones can remain, and their levels are sometimes even enhanced by the exhaust system, creating potential annoyance problems in neighboring communities. This paper describes a practical design approach to such a problem and demonstrates variation in critical system parameters that affect acoustical performance. These parameters include temperature, source impedance, end impedance, flow, and pipe lengths, which are explored through practical models. The results of field measurements before and after installation of a final design are included and demonstrate a significant reduction in the sound level at the frequencies of interest

Notes:

Vendor supplied data

Publisher Number:

2013-01-1885

Access Restriction:

Restricted for use by site license