The Incredible, Tight Fitting Muffler
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Outside North America, the muffler is known as a silencer. In North America, however, it is known as the muffler. This device is used to reduce the amount of decibels created by a machine. Hiram Percy Maxim invented the first muffler to silence hand guns. This was used quite frequently by the mafia to silence their competition permanently. You could shoot someone with less accuracy but someone in the next door room wouldn’t know a gun shot just went off.
The muffler on internal combustion engines is what the exhaust is blown through. Mufflers that are properly installed on a car or motor bike line the exhaust pipe of an engine. They contain a series of rotating baffles to soak in the sound. The majority of the noise created by an engine is not absorbed through the baffles, but is absorbed through the destructive force in the muffler itself. This is made possible with a resonating chamber. This resonating chamber is specifically designed to make the sound waves collide and therefore canceling each other out.
The problem hat mufflers can cause may not be worth the risk having but in almost every county in the United States it is illegal not to have a muffler. When you have muffler problems the thing that will give it away is the noise factor or the smoke coming out of your tailpipe. Mufflers also force the engine to work a lot harder having to pump much harder. When getting your engine tuned it is a common practice to replace stock
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mufflers with energy saving mufflers. This is known as lowering the “back pressure”. This will make your car or bike more powerful, which means more and faster revolutions per minute, at the cost of your hearing.
Sound is a pressure wave that is formed by pulses of alternating low and high air pressure. The pulses travel at the speed of sound through the air. When the pressure pulses reach a humans ear, the eardrum vibrates at a rapid pace depending on the volume. If the vibrations are too intense your eardrum might burst. The best way to reduce sound is to put two sound waves together in an opposite collision course. They will cancel each other out at the point of collision.
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