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GM Muffler

GM muffler refers to an important component of the exhaust system of the GM automobile. The muffler is typically found on the rear portion of the vehicle under the chassis, just before the tailpipe. The muffler is the silencer of the automobile. As the name implies, the muffler muffles the explosive sound of the exiting exhaust gases. Fuel combustion is an explosive process that involves the violent chemical reaction between the hydrocarbon molecules of the fuel and the oxygen molecules of the air. The molecular bonds of the hydrocarbon chains are broken as the hydrogen and carbon atoms of the hydrocarbon fuel combines with the oxygen atoms. In the process, tremendous thermal energy is released.

Consequently, the newly produced combustion gaseous byproducts expand almost instantaneously. Since temperature is directly proportional to pressure, the pressure buildup inside the combustion chambers is exponential. The rapid pressure buildup is accompanied by reverberating sound waves. These sound waves are highly compressed as they exit the combustion chambers along with the exhaust gases. Collectively, these sound waves are the explosive engine noise that is not only annoying, but also potentially destructive. The noise can potentially destroy the eardrums of anyone who is within the immediate vicinity of the car.

GM mufflers reduce the noise of the exiting exhaust gases through destructive interference. Precisely-tuned chambers, tubes and holes are found inside the muffler. These structures allow sound waves to echo and create waves that are mirror images of the original waves. Consequently, when the identical but opposite sound waves meet, they cancel each other. However, the explosive sounds of the exhaust gases are far too complicated to be totally cancelled. Hence, some muffled sound can still be heard.

GM Muffler - GM Mufflers


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