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How Does a Car’s Muffler Work?

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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: Muffler Fact and Repair

  • 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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The GOODYEAR SPRING PROMOTION EVENT is a manufacturer’s mail-in rebate. This is a consumer tire rebate event for select Goodyear tires. To qualify for this event, you must purchase your eligible tires between March 11, 2024, and the expiry date of June 30, 2024. One mail-in rebate form per sales receipt/invoice. Limit one (1) mail-in or online rebate per qualifying purchase, per visit. Limit one (1) rebate form per tire purchase, per envelope. Limit four (4) rebates per individual consumer, per promotion period. Federal and provincial taxes are calculated on the selling price before the rebate. Purchase of a minimum of a set of four tires is required to receive the full rebate amount. Rebates are also available per tire on a prorated basis with a minimum purchase of four tires and a maximum purchase of six tires per sales receipt/invoice. The consumer must submit the rebate form online or fill out and mail the form along with a copy of the original sales receipt/invoice to the address printed on the form postmarked on or before July 31, 2024. Offer is only open to residents of Canada and is only valid for tire purchases from a participating Canadian retailer that operates a retail location in Canada. This mail-in rebate offer cannot be combined with any other Goodyear rebate offer. This is a consumer rebate that also applies to business-to-business purchases, excluding tires sold to national accounts, government accounts, P&R accounts, secondary supply points, other retailers or any other delivery for the account of Goodyear. All sales receipts/invoices submitted must include detailed product and customer sold-to information to be eligible for rebates. The participating retailer is solely responsible for determining the selling price of the tires without direction from Goodyear. Visit goodyear.ca or see a participating retailer for more details. 


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