Muffler
Overview
 
A muffler is a device for reducing the amount of noise emitted by the exhaust
Exhaust gas
Exhaust gas or flue gas is emitted as a result of the combustion of fuels such as natural gas, gasoline/petrol, diesel fuel, fuel oil or coal. According to the type of engine, it is discharged into the atmosphere through an exhaust pipe, flue gas stack or propelling nozzle.It often disperses...

 of an internal combustion engine
Internal combustion engine
The internal combustion engine is an engine in which the combustion of a fuel occurs with an oxidizer in a combustion chamber. In an internal combustion engine, the expansion of the high-temperature and high -pressure gases produced by combustion apply direct force to some component of the engine...

. A US Patent
United States patent law
United States patent law was established "to promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries;" as provided by the United States Constitution. Congress implemented these...

 for an Exhaust muffler for engines was granted to Milton and Marshall Reeves in 1897.
The patent for an Exhaust muffler for engines was awarded to Milton O. Reeves and Marshall T. Reeves of Columbus, Indiana
Columbus, Indiana
Columbus is a city in and the county seat of Bartholomew County, Indiana, United States. The population was 44,061 at the 2010 census, and the current mayor is Fred Armstrong. Located approximately 40 miles south of Indianapolis, on the east fork of the White River, it is the state's 20th largest...

 of the Reeves Pulley Company on 11 May 1897. US Patent Office application No 582485 states that they have invented certain new and useful Improvements in Exhaust-Mufflers for engines ....
Mufflers are typically installed along the exhaust pipe as part of the exhaust system
Exhaust system
An exhaust system is usually tubing used to guide reaction exhaust gases away from a controlled combustion inside an engine or stove. The entire system conveys burnt gases from the engine and includes one or more exhaust pipes...

 of an internal combustion engine.
Encyclopedia
A muffler is a device for reducing the amount of noise emitted by the exhaust
Exhaust gas
Exhaust gas or flue gas is emitted as a result of the combustion of fuels such as natural gas, gasoline/petrol, diesel fuel, fuel oil or coal. According to the type of engine, it is discharged into the atmosphere through an exhaust pipe, flue gas stack or propelling nozzle.It often disperses...

 of an internal combustion engine
Internal combustion engine
The internal combustion engine is an engine in which the combustion of a fuel occurs with an oxidizer in a combustion chamber. In an internal combustion engine, the expansion of the high-temperature and high -pressure gases produced by combustion apply direct force to some component of the engine...

. A US Patent
United States patent law
United States patent law was established "to promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries;" as provided by the United States Constitution. Congress implemented these...

 for an Exhaust muffler for engines was granted to Milton and Marshall Reeves in 1897.

History

The patent for an Exhaust muffler for engines was awarded to Milton O. Reeves and Marshall T. Reeves of Columbus, Indiana
Columbus, Indiana
Columbus is a city in and the county seat of Bartholomew County, Indiana, United States. The population was 44,061 at the 2010 census, and the current mayor is Fred Armstrong. Located approximately 40 miles south of Indianapolis, on the east fork of the White River, it is the state's 20th largest...

 of the Reeves Pulley Company on 11 May 1897. US Patent Office application No 582485 states that they have invented certain new and useful Improvements in Exhaust-Mufflers for engines ....

Description

Mufflers are typically installed along the exhaust pipe as part of the exhaust system
Exhaust system
An exhaust system is usually tubing used to guide reaction exhaust gases away from a controlled combustion inside an engine or stove. The entire system conveys burnt gases from the engine and includes one or more exhaust pipes...

 of an internal combustion engine. The muffler reduces exhaust noise by absorption—the exhaust is routed through a series of passages and chambers lined with roving fiberglass wool—and/or resonating chambers tuned to cause destructive interference wherein opposite sound waves cancel each other out, and
Catalytic converter
Catalytic converter
A catalytic converter is a device used to convert toxic exhaust emissions from an internal combustion engine into non-toxic substances. Inside a catalytic converter, a catalyst stimulates a chemical reaction in which noxious byproducts of combustion are converted to less toxic substances by dint...

s also have a muffling effect.

Changing the muffler / mini-muffler / catalytic converter combination can change the sound of a car's exhaust system considerably. Removing a vehicle's muffler or installing a less effective muffler than the original can cause the vehicle to violate noise regulations. Nevertheless some vehicle owners remove their car muffler in the belief it will improve performance, or just to make them louder.

Types and positions of mufflers

  • With cars, lengthwise underneath, blowing backwards at the rear
  • To the sides before the rear wheels.
  • With large diesel
    Diesel engine
    A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber...

    -powered truck
    Truck
    A truck or lorry is a motor vehicle designed to transport cargo. Trucks vary greatly in size, power, and configuration, with the smallest being mechanically similar to an automobile...

    s:-
    • Mounted vertically behind the cab
    • Crosswise under the front of the cab, blowing sideways.
  • With motorcycles:
    • Usually, beside the engine and rear wheel blowing backwards.
    • In more modern motorcycles, under the seat blowing backwards from under the back of the seat. (Under-slung)
    • Under-engine exhausts first reached popularity with Buell
      Buell Motorcycle Company
      The Buell Motorcycle Company was an American motorcycle manufacturer based in East Troy, Wisconsin and founded in 1983 by ex-Harley-Davidson engineer Erik Buell.Harley-Davidson acquired 49% of Buell in 1993, and it became a wholly owned subsidiary by 2003....

       motorcycles, though by 2008 most manufacturers began using the under-engine design as well.


Motorcycle
Motorcycle
A motorcycle is a single-track, two-wheeled motor vehicle. Motorcycles vary considerably depending on the task for which they are designed, such as long distance travel, navigating congested urban traffic, cruising, sport and racing, or off-road conditions.Motorcycles are one of the most...

 enthusiasts sometimes use the term "raygun," "drag pipes", "pea-shooter" or "hotdog-style" for the old shape of motorcycle exhaust
Exhaust system
An exhaust system is usually tubing used to guide reaction exhaust gases away from a controlled combustion inside an engine or stove. The entire system conveys burnt gases from the engine and includes one or more exhaust pipes...

silencer/muffler with a long straight cylindrical barrel that merged roundedly at each end into the pipe, as in this image and this image.

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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