A review on acoustic performance analysis of reactive muffler

Chivate, Shubham; Hujare, Pravin P.; Askhedkar, Rajesh; Hujare, Deepak; Chinchanikar, Satish

doi:10.1016/j.matpr.2022.04.262

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…Lu et al [25] established a seriesparallel coupled straight-through perforated tube mufer model, and compared it with a conventional straightthrough perforated tube mufer and a straight-through double-censed perforated tube mufer, and analyzed the TL of the mufer. Chivate et al [26] reviewed the acoustic performance of reactive silencers with simple expansion chambers. Ashok Reddy [27] conducted a literature review on acoustic research methods and materials for silencers in diferent felds such as automobiles, aerospace, compressors, and industrial noise.…”

Section: Introductionmentioning

confidence: 99%

Research on the Influence of Characteristics of the Annular Connecting Pipe on the Transmission Loss of the Expanded Exhaust Muffler

Cheng,

Yuan,

et al. 2024

Shock and Vibration

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In order to broaden the muffler frequency band in the low-frequency range of the exhaust muffler and to achieve the purpose of broadband noise reduction, in this paper, a model of an annular connecting pipe muffler is proposed using the finite element method (FEM) to simulate the nonreflection boundary condition and to solve the transmission loss (TL). In addition, the experimental value is obtained by the spatial five-point measurement method and compared with the simulated value, and the validity and reliability of the solution model are verified. Compared with a simple expansion muffler, the average TL of the annular connecting pipe muffler is increased by 11.86 dB, and the maximum TL is increased by 18.31 dB, effectively widening the muffler frequency area, and the overall performance is effectively improved. Finally, the influence of structural factors is analyzed, including the width (W) of the annular connecting pipe, the length (L) of the annular connecting pipe, and the length ratio (m) of the front and rear chambers on the TL and on the width of the anechoic frequency band. The results reveal that the width and length of the annular connecting pipe and front-to-back cavity length ratio are the most significant factors to influence the TL, muffler frequency band, and elimination or reduction of the passing frequency, respectively.

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Section: Introductionmentioning

confidence: 99%

Research on the Influence of Characteristics of the Annular Connecting Pipe on the Transmission Loss of the Expanded Exhaust Muffler

Cheng,

Yuan,

et al. 2024

Shock and Vibration

View full text Add to dashboard Cite

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“…As dissipative mufflers have absorbing material to take energy out of the acoustic motion in the wave as it propagates through the muffler, they are primarily utilized for noise attenuation. [7] For humans, noise levels more than 80 dB are harmful. It explained how the test rig arrangement can be used to accurately evaluate gearbox losses.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Low-Frequency Noise for Muffler by Optimizing the Space between Three 1-Degrees of Freedom Helmholtz Resonator

Jatola,

Gupta

2024

MATEC Web Conf.

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The Helmholtz resonator is one of the basic elements to attenuate low-frequency noise and increase sound transmission loss in a muffler for particular low frequency zone. It can be enhancing the performance without any change in the geometry of the muffler. It can greatly reduce the high-intensity noise in low-frequency zones. A comparative study has been carried out by implementing the two and three resonators arranged in series arrangement at optimum spacing for increasing transmission loss. The model of Helmholtz resonator at wavelength 1000 mm at different spacing like (closely spaced: -(4), 1stantinode: -(4) and 1st node: -(2) ) were prepared by using wave build 3-D and simulating above condition on wave 1-D module. This work is also validated by simulating the same geometry on Comsol tool for the mentioned spacing. This attempt gives a comparative study about perfect spacing during use of more than one resonator in a series. The neck and cavity ratio are taken as 2 and 1.85 respectively for the modelling of an identical resonator. The Conclusion shows that, at (4) resonator gives the maximum attenuation at 340 Hz cut-off frequency in low-frequency zone.

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“…It can obstruct animal movement and obstruct mating, communication, and navigation, which could endanger species. Every part of our existence is infused with the power of sound, which is usually commended for its ability to convey concepts, feelings, and beauty (Chivate et al, 2022). It is essential to our basic form of communication, our life's music, and an essential component of the natural world (Lu et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Analysis of Noise Level with Convergent and Divergent Shape of Muffler and its Impact on Noise Pollution

Jatola,

Gupta

2023

IJERR

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Noise pollution is one of the key hazards that decreases people's quality of life globally. Due to the rapid development of technology, industrialization, urbanization, and transportation networks, noise pollution has reached serious levels in recent years. Sound transmission loss, the attenuation of sound as it passes through diverse objects and environments, is crucial in lowering noise pollution and preserving the acoustic integrity of ecosystems. Due to de-throttling tactics implemented to optimize cylinder fill, the intake system of internal combustion engines is the primary noise source while the vehicle is at low speeds and high loads. Therefore, achieving high acoustic performance of intake systems constitutes a critical issue in complying with the increasingly stringent European regulations for overall noise emission. The Transmission Loss computation is typically the most used technique for describing a system's acoustic performances. This work provided an overview of sound transmission loss and discussed its substantial environmental effects. It investigates the fundamentals of sound transmission, the factors that influence it, and the environmental impacts of sound attenuation. This paper proposed a comparison of three designs like straight duct (muffler), convergent and divergent design of muffler. The main aim is to observe sound transmission loss and compare the noise level with three muffler configurations with the same gas volume. High transmission loss indicates more noise reduction in muffler design, which will help reduce environmental noise pollution.

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A review on acoustic performance analysis of reactive muffler

Cited by 4 publications

References 14 publications

Research on the Influence of Characteristics of the Annular Connecting Pipe on the Transmission Loss of the Expanded Exhaust Muffler

Research on the Influence of Characteristics of the Annular Connecting Pipe on the Transmission Loss of the Expanded Exhaust Muffler

Enhancement of Low-Frequency Noise for Muffler by Optimizing the Space between Three 1-Degrees of Freedom Helmholtz Resonator

Analysis of Noise Level with Convergent and Divergent Shape of Muffler and its Impact on Noise Pollution

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