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How Does a Car’s Muffler Work?

posted on 6/15/2020 8:09:47 AM

Your vehicle’s engine produces small explosions of harmful emissions which come from the combustion chamber. These explosions produce dangerous gases such as carbon dioxide, carbon monoxide, hydrocarbons and nitrogen oxides. For safety, these dangerous gases are dispersed away from your vehicle’s cabin using an exhaust system, which the muffler is a key component of. To explain how the muffler works, we need to know the different components of the muffler.

There are four sections in an automobile’s muffler:

Inlet — The inlet attaches from the exhaust system. Exhaust gases and sound enters the inlet from the exhaust system.
Resonator — The resonator acts as an echo chamber by reducing the overall noise volume of the engine by canceling sound waves.
Perforated tubes — The perforated tubes are metal tubes located inside the muffler and are responsible for how loud or quiet your car sounds. They suppress the sound and work to increase your vehicle performance.
Outlet — The outlet emits both the remaining sound and exhaust gases.

How a Muffler Functions

The muffler contains tubes, channels, and holes which direct gases and reduce exhaust pressure. It quiets the engine by reducing the sound pressure emitted. The muffler is designed not to just dampen sound, but to combine sound waves and make them cancel out one another.

The muffler is also responsible for releasing the toxic gases, which can harm you and your passengers if released into the cabin of your vehicle. Some mufflers are designed to be silent while others are specifically designed to create what could be considered a growling sound. The muffler also improves the overall performance of your vehicle. Your engine can generate more power faster if it is able to get rid of all the exhaust gases it produces quickly.

Keeping your exhaust maintained and functioning properly will keep your vehicle from making unpleasant, loud noises and controls how your vehicle impacts the environment. Making sure these harmful emissions stays on the outside of your vehicle, will protect your health and the safety of your passengers.

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