Video: How a car's muffler works
#1
Lexus Champion
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I chopped open the muffler on my Corolla. I made a short video explaining how it works:
Here’s a few photos of the process:
![Video: How a car's muffler works-cldkahh.jpg](https://www.clublexus.com/forums/attachments/car-chat/491679d1683154464t-video-how-a-car-s-muffler-works-cldkahh.jpg)
![Video: How a car's muffler works-xnxldlg.jpg](https://www.clublexus.com/forums/attachments/car-chat/491680d1683154464t-video-how-a-car-s-muffler-works-xnxldlg.jpg)
![Video: How a car's muffler works-8cynyux.jpg](https://www.clublexus.com/forums/attachments/car-chat/491681d1683154464t-video-how-a-car-s-muffler-works-8cynyux.jpg)
![Video: How a car's muffler works-8uumuwj.jpg](https://www.clublexus.com/forums/attachments/car-chat/491682d1683154464t-video-how-a-car-s-muffler-works-8uumuwj.jpg)
![Video: How a car's muffler works-h55nbt4.jpg](https://www.clublexus.com/forums/attachments/car-chat/491683d1683154464t-video-how-a-car-s-muffler-works-h55nbt4.jpg)
![Video: How a car's muffler works-pisasay.jpg](https://www.clublexus.com/forums/attachments/car-chat/491684d1683154464t-video-how-a-car-s-muffler-works-pisasay.jpg)
How it all works inside:
![Video: How a car's muffler works-2a6omqv.jpg](https://www.clublexus.com/forums/attachments/car-chat/491685d1683154464t-video-how-a-car-s-muffler-works-2a6omqv.jpg)
Sound travels as a wave in the exhaust stream, with a wave length of lambda:![Video: How a car's muffler works-2spdqpe.jpg](https://www.clublexus.com/forums/attachments/car-chat/491686d1683154464t-video-how-a-car-s-muffler-works-2spdqpe.jpg)
In the perfect world, all waves would destructively interfere:
![Video: How a car's muffler works-sbgkh4x.jpg](https://www.clublexus.com/forums/attachments/car-chat/491687d1683154464t-video-how-a-car-s-muffler-works-sbgkh4x.jpg)
I was surprised that this muffler has a passive spring loaded door:
![Video: How a car's muffler works-zp02ztg.jpg](https://www.clublexus.com/forums/attachments/car-chat/491688d1683154464t-video-how-a-car-s-muffler-works-zp02ztg.jpg)
![Video: How a car's muffler works-dppp2wo.jpg](https://www.clublexus.com/forums/attachments/car-chat/491689d1683154464t-video-how-a-car-s-muffler-works-dppp2wo.jpg)
Here’s a few photos of the process:
![Video: How a car's muffler works-cldkahh.jpg](https://www.clublexus.com/forums/attachments/car-chat/491679d1683154464t-video-how-a-car-s-muffler-works-cldkahh.jpg)
![Video: How a car's muffler works-xnxldlg.jpg](https://www.clublexus.com/forums/attachments/car-chat/491680d1683154464t-video-how-a-car-s-muffler-works-xnxldlg.jpg)
![Video: How a car's muffler works-8cynyux.jpg](https://www.clublexus.com/forums/attachments/car-chat/491681d1683154464t-video-how-a-car-s-muffler-works-8cynyux.jpg)
![Video: How a car's muffler works-8uumuwj.jpg](https://www.clublexus.com/forums/attachments/car-chat/491682d1683154464t-video-how-a-car-s-muffler-works-8uumuwj.jpg)
![Video: How a car's muffler works-h55nbt4.jpg](https://www.clublexus.com/forums/attachments/car-chat/491683d1683154464t-video-how-a-car-s-muffler-works-h55nbt4.jpg)
![Video: How a car's muffler works-pisasay.jpg](https://www.clublexus.com/forums/attachments/car-chat/491684d1683154464t-video-how-a-car-s-muffler-works-pisasay.jpg)
How it all works inside:
![Video: How a car's muffler works-2a6omqv.jpg](https://www.clublexus.com/forums/attachments/car-chat/491685d1683154464t-video-how-a-car-s-muffler-works-2a6omqv.jpg)
Sound travels as a wave in the exhaust stream, with a wave length of lambda:
![Video: How a car's muffler works-2spdqpe.jpg](https://www.clublexus.com/forums/attachments/car-chat/491686d1683154464t-video-how-a-car-s-muffler-works-2spdqpe.jpg)
In the perfect world, all waves would destructively interfere:
![Video: How a car's muffler works-sbgkh4x.jpg](https://www.clublexus.com/forums/attachments/car-chat/491687d1683154464t-video-how-a-car-s-muffler-works-sbgkh4x.jpg)
I was surprised that this muffler has a passive spring loaded door:
![Video: How a car's muffler works-zp02ztg.jpg](https://www.clublexus.com/forums/attachments/car-chat/491688d1683154464t-video-how-a-car-s-muffler-works-zp02ztg.jpg)
![Video: How a car's muffler works-dppp2wo.jpg](https://www.clublexus.com/forums/attachments/car-chat/491689d1683154464t-video-how-a-car-s-muffler-works-dppp2wo.jpg)
![Video: How a car's muffler works-aeds9tr.jpg](https://www.clublexus.com/forums/attachments/car-chat/491690d1683154464t-video-how-a-car-s-muffler-works-aeds9tr.jpg)
#3
Lexus Champion
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Good stuff, that's not stainless steel.
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