Mufflers are the final piece of the exhaust system, just before the tail pipe. These tubes and chambers are actually as finely tuned as a musical instrument. Mufflers are used mainly to dissipate the loud sounds created by the engine’s pistons and valves.
The exhaust gases and the sound waves enter through the center tube.
It turns out that the manifold can be an important source of back pressure because exhaust gases from one cylinder build up pressure in the manifold that affects the next cylinder that uses the manifold. This device works just like the resonator chamber in the muffler -- the dimensions are calculated so that the waves reflected by the resonator help cancel out certain frequencies of sound in the exhaust. Every time your exhaust valve opens, a large burst of the burnt gases used during your engine’s combustion is released into the exhaust system.
There will be one or more muffler on every vehicle. The molecules in this gas collide with the lower-pressure molecules in the pipe, causing them to stack up on each other. They pass through a set of holes into another chamber, where they turn and go out the last pipe and leave the muffler.
The inside of your muffler isn’t empty – it’s actually filled with tubes, channels, and holes. Inside a muffler, you'll find a deceptively simple set of tubes with some holes in them. There are other features inside this muffler that help it reduce the sound level in different ways.
From the manifold, the exhaust gases flow into one pipe toward the catalytic converter and the muffler.
It’s more about how it muffles sound.
They are designed to reflect the sound waves produced by the engine in such a way that they partially cancel themselves out. resonator- which is a form of muffler designed to change the sound of the exhaust. How the muffler works To say that a muffler muffles explains how this automotive component does without actually telling you very much at all. They bounce off the back wall of the muffler and are reflected through a hole into the main body of the muffler. In an engine, pulses are created when an exhaust valve opens and a burst of high-pressure gas suddenly enters the exhaust system. 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 … The muffler is engineered as an acoustic device to reduce the loudness of the sound pressure created by the engine by acoustic quieting. This release of gases creates very powerful sound waves. The muffler reduces and adjusts the noise of the exhaust system. Mufflers are installed within the exhaust system of most internal combustion engines.