Muffler design by sub-chamber optimization: with application to a mining truck muffler

X. Yu, Yuhui Tong, L. Cheng, Jie Pan

    Research output: Contribution to conferenceConference presentation/ephemera

    Abstract

    Reactive and dissipative mufflers are effective means to attenuate low-frequency noise emitted
    from vehicle exhaust systems. Conventional muffler design by global optimization has
    difficulty in choosing appropriate optimization parameters. In this study, a sub-chamber
    muffler design approach by cascading multiple sub-chambers with different transmission loss
    (TL) characteristics to achieve an overall broadband noise attenuation is proposed. To
    demonstrate its effectiveness, the acoustic performance of mufflers fitted on the mining haul
    trucks and their better design is investigated. The existing muffler shows strong sound
    attenuation at frequencies from 200 to 300 Hz but fails to work well at other frequencies. To
    improve its broadband performance, the muffler’s inner structure is revised by tuning the subchamber
    geometric parameters to provide additional TL bands. Through simulated results,
    the revised muffler is demonstrated to provide a broader acoustic stop band in the design
    frequency range compared with the existing one.
    Original languageEnglish
    Number of pages10
    Publication statusPublished - 2016
    EventNOVEM 2015: Noise and Vibrations - Emerging Technologies - Dubrovnik, Croatia
    Duration: 13 Apr 201515 Apr 2015

    Conference

    ConferenceNOVEM 2015
    CountryCroatia
    CityDubrovnik
    Period13/04/1515/04/15

    Fingerprint

    mufflers
    trucks
    chambers
    transmission loss
    optimization
    exhaust systems
    broadband
    acoustics
    noise reduction
    vehicles
    tuning
    low frequencies

    Cite this

    Yu, X., Tong, Y., Cheng, L., & Pan, J. (2016). Muffler design by sub-chamber optimization: with application to a mining truck muffler. Paper presented at NOVEM 2015, Dubrovnik, Croatia.
    Yu, X. ; Tong, Yuhui ; Cheng, L. ; Pan, Jie. / Muffler design by sub-chamber optimization: with application to a mining truck muffler. Paper presented at NOVEM 2015, Dubrovnik, Croatia.10 p.
    @conference{7e0ac1f65b184f12b3bc4eee678e4d0d,
    title = "Muffler design by sub-chamber optimization: with application to a mining truck muffler",
    abstract = "Reactive and dissipative mufflers are effective means to attenuate low-frequency noise emittedfrom vehicle exhaust systems. Conventional muffler design by global optimization hasdifficulty in choosing appropriate optimization parameters. In this study, a sub-chambermuffler design approach by cascading multiple sub-chambers with different transmission loss(TL) characteristics to achieve an overall broadband noise attenuation is proposed. Todemonstrate its effectiveness, the acoustic performance of mufflers fitted on the mining haultrucks and their better design is investigated. The existing muffler shows strong soundattenuation at frequencies from 200 to 300 Hz but fails to work well at other frequencies. Toimprove its broadband performance, the muffler’s inner structure is revised by tuning the subchambergeometric parameters to provide additional TL bands. Through simulated results,the revised muffler is demonstrated to provide a broader acoustic stop band in the designfrequency range compared with the existing one.",
    author = "X. Yu and Yuhui Tong and L. Cheng and Jie Pan",
    year = "2016",
    language = "English",
    note = "NOVEM 2015 : Noise and Vibrations - Emerging Technologies ; Conference date: 13-04-2015 Through 15-04-2015",

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    Yu, X, Tong, Y, Cheng, L & Pan, J 2016, 'Muffler design by sub-chamber optimization: with application to a mining truck muffler' Paper presented at NOVEM 2015, Dubrovnik, Croatia, 13/04/15 - 15/04/15, .

    Muffler design by sub-chamber optimization: with application to a mining truck muffler. / Yu, X.; Tong, Yuhui; Cheng, L.; Pan, Jie.

    2016. Paper presented at NOVEM 2015, Dubrovnik, Croatia.

    Research output: Contribution to conferenceConference presentation/ephemera

    TY - CONF

    T1 - Muffler design by sub-chamber optimization: with application to a mining truck muffler

    AU - Yu, X.

    AU - Tong, Yuhui

    AU - Cheng, L.

    AU - Pan, Jie

    PY - 2016

    Y1 - 2016

    N2 - Reactive and dissipative mufflers are effective means to attenuate low-frequency noise emittedfrom vehicle exhaust systems. Conventional muffler design by global optimization hasdifficulty in choosing appropriate optimization parameters. In this study, a sub-chambermuffler design approach by cascading multiple sub-chambers with different transmission loss(TL) characteristics to achieve an overall broadband noise attenuation is proposed. Todemonstrate its effectiveness, the acoustic performance of mufflers fitted on the mining haultrucks and their better design is investigated. The existing muffler shows strong soundattenuation at frequencies from 200 to 300 Hz but fails to work well at other frequencies. Toimprove its broadband performance, the muffler’s inner structure is revised by tuning the subchambergeometric parameters to provide additional TL bands. Through simulated results,the revised muffler is demonstrated to provide a broader acoustic stop band in the designfrequency range compared with the existing one.

    AB - Reactive and dissipative mufflers are effective means to attenuate low-frequency noise emittedfrom vehicle exhaust systems. Conventional muffler design by global optimization hasdifficulty in choosing appropriate optimization parameters. In this study, a sub-chambermuffler design approach by cascading multiple sub-chambers with different transmission loss(TL) characteristics to achieve an overall broadband noise attenuation is proposed. Todemonstrate its effectiveness, the acoustic performance of mufflers fitted on the mining haultrucks and their better design is investigated. The existing muffler shows strong soundattenuation at frequencies from 200 to 300 Hz but fails to work well at other frequencies. Toimprove its broadband performance, the muffler’s inner structure is revised by tuning the subchambergeometric parameters to provide additional TL bands. Through simulated results,the revised muffler is demonstrated to provide a broader acoustic stop band in the designfrequency range compared with the existing one.

    M3 - Conference presentation/ephemera

    ER -

    Yu X, Tong Y, Cheng L, Pan J. Muffler design by sub-chamber optimization: with application to a mining truck muffler. 2016. Paper presented at NOVEM 2015, Dubrovnik, Croatia.