A review of flow acoustic effects on a commercial automotive exhaust system - methods and materials

• Autorzy: Mohamad Barhm

Identyfikatory

DOI

10.30464/jmee.2019.3.2.149

• Języki publikacji: EN

Abstrakty

EN

Literature review on flow acoustic methods and materials of an automotive muffler. A car is judged comfortable also depending on the acoustic level transmitted inside, and a thorough knowledge of acoustics of ducts and mufflers is needed for the design of efficient muffler configurations. Unstable exhaust gas at high temperature flowing from internal combustion engine manifold may cause of noise and vibrations conflicting with the high standard of acoustic comfort requested by this kind of vehicle. The basic gaols are to define most important methods to identify noise occur from the motion of fluid in case of turbulent model. Materials properties like velocity, temperature, thermal conductivity and density have been technical presented in this work.

Słowa kluczowe

EN

internal combustion engine; exhaust gas system; two-source method; two-load method; acoustic analysis; computational fluid dynamics

PL

tłokowy silnik spalinowy; układ wydechowy silnika; metoda dwóch źródeł; analiza akustyczna; obliczeniowa mechanika płynów

• Wydawca: Wydawnictwo Uczelniane Politechniki Koszalińskiej
• Czasopismo: Journal of Mechanical and Energy Engineering
• Rocznik: 2019
• Tom: Vol. 3, No 2
• Strony: 149--156
• Opis fizyczny: Bibliogr. 26 poz., rys., wykr.

Twórcy

autor

Mohamad Barhm

• Faculty of Mechanical Engineering and Informatics, University of Miskolc, 3515 Miskolc, Hungary

Bibliografia

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• 19. B. Mohamad, G. Szepesi & B. Bolló. (2018). Review Article: Effect of Ethanol-Gasoline Fuel Blends on the Exhaust Emissions and Characteristics of SI Engines. Lecture Notes in Mechanical Engineering. 29-41.
• 20. B. Mohamad, G. Szepesi & B. Bolló. (2017). Review Article: Modelling and Analysis of a Gasoline Engine Exhaust Gas Systems. International Scientific Conference on Advances in Mechanical Engineering. University of Debrecen-Hungary.
• 21. D. A. Bies & C. H. Hansen. (1980). Flow Resistance Information for Acoustical Design. Applied Acoustics 13, 357-391.
• 22. B. C. Nakra, W, K. Sa'id, & A. Nassir. (1981). Investigations on Mufflers for Internal Combustion Engines. Applied Acoustics 14, 135 145.
• 23. J S Lamancusa. (1988). The Transmission Loss of Double Expansion Chamber Mufflers with Unequal Size Chambers. Applied Acoustics 24, 15-32.
• 24. Carl Q. Howard & Richard A. Craig. (2014). Noise reduction using a quarter wave tube with different orifice geometries. Applied Acoustics 76, 180–186.
• 25. N. K. Singh & P. A. Rubini. (2015). Large Eddy Simulation of acoustic pulse propagation and turbulent flow interaction in expansion mufflers. Applied Acoustics, 98, pp. 6-19.
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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).