An unavoidable side effect of this noise reduction is the restriction of the exhaust gas flow, which creates back pressure, which can decrease engine efficiency. This is because the engine exhaust must share the same complex exit pathway built inside the muffler as the sound pressure that the muffler is designed to mitigate.
A cutaway muffler showing the interior pipes and chambers which reduces horsepower
Some aftermarket mufflers claim to increase engine output and/or reduce fuel consumption by slightly reduced back pressure. This usually entails less noise reduction (i.e., more noise).
On May 18, 1905, the state of Oregon passed a law that required vehicles to have "a light, a muffler, and efficient brakes".[3]
^"muffler (noun)". dictionary.cambridge.org. Retrieved 1 May 2021.
^Merriam-Webster Dictionary. "Definition of muffler". Retrieved 16 June 2020.
^Goeres-Gardner, Diane L.; Douglas County Museum (2010). Roseburg. Arcadia Pubpishers. p. 97. ISBN9780738580319. Retrieved 4 September 2019.
^"Regulations Section". Federal Motor Carrier Safety Administration. Retrieved 18 December 2018.
^Queen's Printer, Victoria, British Columbia, Canada (9 June 2020). "Motor Vehicle Act Regulations". Retrieved 16 June 2020.{{cite web}}: CS1 maint: multiple names: authors list (link)
^"vehicle-noise". NSW Environment & Heritage. Retrieved 18 December 2018.
^D. W. Herrin (2012). "Vibro-Acoustic Design in Mechanical Systems" (PDF). University of Kentucky.
External links
Wikimedia Commons has media related to Exhaust silencers.
Howstuffworks: "How Mufflers Work"
January 30, 2023
muffler, this, article, about, exhaust, system, component, other, uses, disambiguation, this, article, multiple, issues, please, help, improve, discuss, these, issues, talk, page, learn, when, remove, these, template, messages, this, article, needs, additional. This article is about the exhaust system component For other uses see Muffler disambiguation This article has multiple issues Please help improve it or discuss these issues on the talk page Learn how and when to remove these template messages This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Muffler news newspapers books scholar JSTOR March 2011 Learn how and when to remove this template message This article possibly contains original research Please improve it by verifying the claims made and adding inline citations Statements consisting only of original research should be removed March 2011 Learn how and when to remove this template message Learn how and when to remove this template message A muffler North American and Australian English 1 or silencer British English is a device for reducing the noise emitted by the exhaust of an internal combustion engine especially a noise deadening device forming part of the exhaust system of an automobile 2 Silencer silver and exhaust pipe on a Ducati motorcycle A silencer cut open to show the insulation chambers and piping inside the shell Contents 1 Description 2 See also 3 References 4 External linksDescription Edit Dual tailpipes attached to the muffler on a passenger car to reduce the sound produced A muffler with pipes Mufflers are installed within the exhaust system of most internal combustion engines The muffler is engineered as an acoustic device to reduce the loudness of the sound pressure created by the engine by acoustic quieting The noise of the burning hot exhaust gas exiting the engine at high speed is abated by a series of passages and chambers lined with roving fiberglass insulation and or resonating chambers harmonically tuned to cause destructive interference wherein opposite sound waves cancel each other out citation needed An unavoidable side effect of this noise reduction is the restriction of the exhaust gas flow which creates back pressure which can decrease engine efficiency This is because the engine exhaust must share the same complex exit pathway built inside the muffler as the sound pressure that the muffler is designed to mitigate A cutaway muffler showing the interior pipes and chambers which reduces horsepower Some aftermarket mufflers claim to increase engine output and or reduce fuel consumption by slightly reduced back pressure This usually entails less noise reduction i e more noise On May 18 1905 the state of Oregon passed a law that required vehicles to have a light a muffler and efficient brakes 3 The legality of altering a motor vehicle s original equipment exhaust system varies by jurisdiction in many developed countries such as the United States 4 Canada 5 and Australia 6 such modifications are highly regulated or strictly prohibited Aftermarket mufflers usually alter the way a vehicle performs due to back pressure reduction 7 A muffler on a large diesel powered truckSee also EditNoise control Soundproofing Anechoic chamber Vibration isolation Shock absorber Buffer disambiguation Cushioning Damped wave Damping ratio Damper disambiguation Sound AttenuatorsReferences Edit muffler noun dictionary cambridge org Retrieved 1 May 2021 Merriam Webster Dictionary Definition of muffler Retrieved 16 June 2020 Goeres Gardner Diane L Douglas County Museum 2010 Roseburg Arcadia Pubpishers p 97 ISBN 9780738580319 Retrieved 4 September 2019 Regulations Section Federal Motor Carrier Safety Administration Retrieved 18 December 2018 Queen s Printer Victoria British Columbia Canada 9 June 2020 Motor Vehicle Act Regulations Retrieved 16 June 2020 a href Template Cite web html title Template Cite web cite web a CS1 maint multiple names authors list link vehicle noise NSW Environment amp Heritage Retrieved 18 December 2018 D W Herrin 2012 Vibro Acoustic Design in Mechanical Systems PDF University of Kentucky External links Edit Wikimedia Commons has media related to Exhaust silencers Howstuffworks How Mufflers Work Retrieved from https en wikipedia org w index php title Muffler amp oldid 1126894455, wikipedia, wiki, book, books, library,
