How a Muffler Works
Автокөліктер мен көлік құралдары
Here's what the inside of a muffler looks like and how it works.
A muffler is used near the end of the exhaust system on a vehicle to reduce the noise emitted by the engine. The noise comes from the combustion chamber, and travels through the exhaust stream.
The muffler has a series of perforated tubes, baffles and a trap door that redirect exhaust gases. As the gases travel, sound waves are either absorbed, or reflected and destructively interfered, cancelling them out.
The exhaust gas continues to flow around in the muffler and out the tail pipe. However, most mufflers pose as a restriction for an internal combustion engine, because the exhaust gases have to travel around, back in a reverse direction and then out the tail pipe. This is known as reverse flow or turbo style muffler.
Many mufflers are accompanied upstream by a resonator, that reduces certain frequencies of sound in the exhaust stream before it enters the muffler. On the outside, it looks like a small tube increasing to a large diameter tube, and then back down to exhaust pipe diameter.
Mufflers work on the principle of destructive interference and absorption. The walls of the muffler are made of two layers of stainless steel, which help reduce vibration and absorb sound. Some mufflers have a fiberglass material around the perforated tubes to help absorb sound.
Destructive interference occurs when a sound wave is reflected off a surface and interferes with the inbound sound wave. The high amplitudes interference with the low amplitudes, and the net amplitude becomes zero. Baffles are strategically distanced to cancel out certain frequencies.
The muffler illustrated in this video was from a 2001 Toyota Corolla. It features a spring loaded passive exhaust flap. The flap opens once pressure is built at higher RPM's, allowing the majority of exhaust gases to enter into the third and final chamber, before exiting the tail pipe.
Purchase tools used in this video to dissect your own car parts:
Angle Grinder (aka snap ring pliers):
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amzn.to/3hyoQFR (Canada)
3/8" Ratchet set:
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Screwdriver set:
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Пікірлер: 838
Purchase tools used in this video to dissect your own car parts: Angle Grinder (aka snap ring pliers): amzn.to/3nyCsVp (US) amzn.to/3hyoQFR (Canada) 3/8" Ratchet set: amzn.to/3hA7LLD (US) amzn.to/3zgHE2d (Canada) Screwdriver set: amzn.to/3tGeU1S (US) amzn.to/3hy4Z9G (Canada)
@74nova36
2 жыл бұрын
Where’s the link for the toothbrush?
@THEAB10HDTV
2 жыл бұрын
we need india
@buggs9950
2 жыл бұрын
@@74nova36 Which one, orange or purple? I can't decide. Maybe they come as a multi pack, that would save me having to choose..
@charlieangkor8649
2 жыл бұрын
Why are you posting this? Do they give you money if someone buys through the link?
@hxhdfjifzirstc894
Жыл бұрын
The sound waves are 180 DEGREES out of phase, not 180 'percent'. It's not the same thing.
I love the way you throughly explained the muffler's function, but that toothbrush pointer just worked like a charm.
@speedkar99
6 жыл бұрын
+rockerojuan thanks for the kind feedback
love the toothbrush pointer!
@speedkar99
7 жыл бұрын
Mr. Toothbrush reminds you to brush your teeth three times a day.
@michaelmace924
6 жыл бұрын
David Bovee Dude, my exact thoughts
@LoriSmithsspro
6 жыл бұрын
I was thinking the same thing...lol
@titusfana9210
6 жыл бұрын
pointer of a perfect teacher kkkkkkkkkkk...
@harambeftw8363
3 жыл бұрын
Toothbrush pointer is the best
Surprising amount of engineering in what appears to be a simple component. This channel was a great find. Keep it up.
@speedkar99
7 жыл бұрын
+Dylan Lewis Agreed, I didn't know myself there was so much to a muffler, especially the reverse flow design.
@truthaboveagenda
5 жыл бұрын
Very interesting, and informative work, speedkar 99.
@ryancalhoun4671
3 жыл бұрын
It's a Toyota
I understood everything thanks to the toothbrush.
@speedkar99
6 жыл бұрын
+Tony32 haha toothbrush superhero
@speedstriker
6 жыл бұрын
That's the toothbrush of clear instruction. No educational video is complete without it.
@groundzerozone
6 жыл бұрын
Perhaps this video is sponsored by Oral B... Maybe?
@kentkatchem
6 жыл бұрын
LOL! That's great!
@mbabcock111
5 жыл бұрын
Much better than 'talking hands'...
I am a school physics teacher I will show this when I teach interference.Great job. Thanks
@speedkar99
6 жыл бұрын
+Physics_rabbi Thanks I'm glad my video could help your class.
@udarasamarasinghe8811
6 жыл бұрын
For best results, use a toothbrush to point
@firearms-explosives
3 жыл бұрын
Firearm suppression is another relevant Application and easier to test variables on.
@KarlAlfredRoemer
2 жыл бұрын
Please calculate the lowest frequency that can be reflected back and forth between the partitions. And then think about how high (or better how low) the frequencies are that have to be damped away in the rear silencer. Then you will see that the explanation in the video cannot work at all.
@Pranjal90
2 жыл бұрын
@@udarasamarasinghe8811 😂😂😂
Loved the sound of the muffler delete but was sad this video was so short. Love the lay man's explanation in a short video!
What an informative video! Clear well shot, very well described - and no fluff. Keep them coming boss
@speedkar99
7 жыл бұрын
Thank you very much, clear and to the point is how it should be!
dude i love these videos so much i was just watching engineering explained's video on mufflers and then i was like "i wanna see the actual thing cut open i bet speedkar has done that" and you had and its beautiful
I love how you explain the sound wave with that tooth brush
@speedkar99
6 жыл бұрын
+augy 183 Oh Yea... the toothbrush is the instructor now!
Can't believe such a lowly Corolla muffler has got so much engineering inside of it. Thank you very much sir!
@speedkar99
6 жыл бұрын
+Dominic Fong I agree! I would have thought it was more simple
Great video. Hats off to the guy who volunteered his toothbrush for the pointer
I am impressed with your physics explanations!
@speedkar99
7 жыл бұрын
Thanks, glad you found it helpful.
Excellent video as always from you. Great work uploaded.
@speedkar99
6 жыл бұрын
+LearningZone thanks!
Quick concise and to the point. excellent editing job. thank you for not wasting my time
@speedkar99
3 жыл бұрын
Glad you appreciate my work
First rate video. Clearly explained. A lot of information. Camera showed everything that needed to be seen. Thank you.
@speedkar99
6 жыл бұрын
+Roark Gill glad you enjoyed it. Thanks
Did not know there was that much engineering that went into a mufflers’ sound-cancelling calculations. Super cool. 🇨🇦👍🏼
@hxhdfjifzirstc894
Жыл бұрын
When they do these kinds of calculations, they're targeting one specific RPM, and probably 2nd order harmonics.
Excellent video, never imagined all those chambers inside a muffler. Thanks.
@speedkar99
4 жыл бұрын
I was quite intrigued as well
Excellent video, this was something I've wondered about for a while, thank you for the efforts you've put into this video!
@speedkar99
6 жыл бұрын
+Fadi Dan I'm glad you learned something
I'm going over this accoustics stuff in my speech and hearing science class. Thanks for the detailed analysis.
Excellent demostration, thank you so much.
This was very informative! Thanks for being so thorough!
@speedkar99
4 жыл бұрын
Awesome thanks
Toothbrush made me subscribe
@speedkar99
6 жыл бұрын
+Alex McCoy Hah another vote for the toothbrush!
usually, in this kind of videos I'm not expecting much physics and formulas! excellent job
@speedkar99
6 жыл бұрын
+Masoud Rad thanks, your right a splash of theory is always good
It is quite clear to me from this video that if you want a muffler that lasts a long time, use a toothbrush. Once I saw that, I knew this guy was legit. I'm subscribing!
@speedkar99
5 жыл бұрын
Haha The toothbrush doubles the muffler life.
Loved the video, it was very informative while still being entertaining.
@speedkar99
7 жыл бұрын
Glad you enjoyed it. I don't know whats so humorous though...
It's 3 am in the morning, and I am watching this. Help me
@speedkar99
6 жыл бұрын
+A B but why ?
@jerwinusacdin8954
5 жыл бұрын
Lmaaooo
@vadditejaswi5460
5 жыл бұрын
That's pretty cool bro...
@dansuper6103
4 жыл бұрын
No it’s 3 am in the evening
Very good video, the creator went through all the trouble to help us explore the inside of a muffler. Thumbs up both here and by clicking!
@speedkar99
5 жыл бұрын
Thanks
Brilliant explanation, enjoyed that thanks.
It's just baffling !
@speedkar99
7 жыл бұрын
It is!
@godfreypoon5148
6 жыл бұрын
+Jim Jimm It doesn't resonate with you?
@CNCmachiningisfun
6 жыл бұрын
Further replies have been muffled ;) .
@TIMEtoRIDE900
6 жыл бұрын
You've exhausted all the puns. . . . .
@CNCmachiningisfun
6 жыл бұрын
Pun-ishment is in order ;) .
I recently learnt about waves and this video was very helpful
@speedkar99
6 жыл бұрын
+Menuka Ramanayake That is I'm glad it helped you put the theory into perspective.
Thank you for this video, I was wondering how they worked. Great job
@speedkar99
6 жыл бұрын
+goriman 750 Cool glad you learned something
The toothbrush is the best part! Thank you!
@speedkar99
6 жыл бұрын
+Daniel Climent haha why the toothbrush?
Toothbrush pointer makes clear explanation.i learned a lot
Toyota are so proud of the equipment they make that they put their name on stuff no one will ever see...Boss move! * good vid 👍
@speedkar99
2 жыл бұрын
That's because there's competition in the aftermarket so they want to stamp their name on it.
Your one of a kind. Thank you for your work; and thank you for sharing.
@speedkar99
4 жыл бұрын
Amazing! Thanks
Thank you that was informative video how much lost me but I hung in there and now I am informed with knowledge that I can put to use thank you
Really appreciate your work 👏👏👏 Thanks
Huh that sounded a lot nicer without the muffler.
@speedkar99
7 жыл бұрын
I agree. I didn't expect a Corolla to sound this good. You should hear it now that I chopped the catalytic converter off!
@nirajpatil3061
3 жыл бұрын
speedkar99 According to AP, you will have the whole car into its constituent parts with 10 more videos.
@oldundead
3 жыл бұрын
Make me wanna cut off my muffler right now.
@cabbagemaster7196
3 жыл бұрын
Mufflers stop the good sound but I think it’s illegal
Bravo good sir! Bravo, well explained and simply broken down.
@speedkar99
6 жыл бұрын
+timo v Thanks for the compliment
Thanks to Your Toothbrush I clearly Understand everything,, keep it up
@speedkar99
5 жыл бұрын
I'm glad my brothers contribution was recognized
@rodhawkins5037
4 жыл бұрын
@@speedkar99 at least you didn't scrub the toilet with it. 🤤
Love the pointer!
Excellent clip just like the independent fog lights on the solara.
@speedkar99
6 жыл бұрын
+Adam J Thanks! Have you tried the independent fog light mod?
@adamj3170
6 жыл бұрын
speedkar99 yes on the 99 solara I did because of your awesome clip I crashed it miss my white 99 sle
Thats the cleanest Iv'e seen your brothers toothbrush since I began watching your channel.
Wonderful explanation 👍🏽👍🏽👍🏽👍🏽
thanks, very informative and interesting
Love this, straight to the point.
@speedkar99
4 ай бұрын
I should section a straight pipe next then
nice pointer bro..reminded me to brush my muffler before bed!😂
@speedkar99
6 жыл бұрын
+Luis Gordillo gotta keep it clean!
Great explaining!!! Love the brush pointer 🤣
@speedkar99
8 ай бұрын
Me too 🤣
i love it how he used the toothbrush as a pointer😂
Fantastic explanation.
Great video bro! I wish more people made em like you!
@speedkar99
4 ай бұрын
Thanks. I'll have an updated video on this soon.
Great video . Simple but useful
@speedkar99
4 жыл бұрын
Thanks
Great video!
Good job. Got the ideas across. Not unnecessarily technical. Actually looking at a real muffler was better than a chalkboard diagram. I didn't notice the toothbrush.
@speedkar99
4 жыл бұрын
Glad you found it helpful
Spend 5 minutes explaining the complexities of sound waves bouncing inside the chamber and how it's important to keep them pressurized, then suggests to drill a few holes to drain the water, lol
@speedkar99
6 жыл бұрын
+VanillaSnake21 Yep Its one or the other With OEM mufflers though I don't think you need to drill a hole, the material is much better quality than aftermarket
@VanillaSnake21
6 жыл бұрын
But I don't understand the point of the suggestion, you're saying compromise the muffler and make it less effective in reducing noise as well as create a exhaust leak for what? Just to make sure the muffler doesn't rust? But at that point it's a garbage muffler anyway.
@speedkar99
6 жыл бұрын
+VanillaSnake21 yea true. Its a trade off.
@VanillaSnake21
6 жыл бұрын
No you don't understand. A trade off for what? A trade off to keep the muffler longer? But what's the difference between a rust making a hole in the muffler or you? When you make holes in it you might as well throw it out anyways.
@theravedaddy
6 жыл бұрын
An 1/8 hole in the muffler aint gonna do shit to the noise you bellend but it will drain all the collected condensation out. Many exhausts have them as standard so give up trying to be a smartass.
nice job , thanks
Long over due vid. Anther great one to watch. Thanks
@speedkar99
7 жыл бұрын
Thank you :)
Vocally I am reminded of Ross from Friends. When the toothbrush is used to explain the graph I see a muppet. Good video none the less!
@speedkar99
6 жыл бұрын
Thanks haha
Thank you. Well explained, does it matter if I replace a corolla muffler with another one from a different sedan, say from a nissan sunny?
Nice video explaining everything clearly. I have a question for you though. The silencer pipe in my 2005 Camry center exhaust section has something that's broken off which causes a rattling sound when the engine is idling rough or when I shake the end muffler. The affected section is the bulging part in the silencer pipe after the cat converter but before the end muffler. The car drives fine for now and there is no check engine light. Should I 1. replace it or, 2. cut it open and try to weld it back/cut the broken section off or, 3. just ignore it altogether? I'm appreciative of your opinion. Thanks.
So clear explaining
Great job explaining
@speedkar99
Ай бұрын
Thanks
Like the toothbrush whiteboard pointer good one.
Thanks for amazing video 👌
@speedkar99
Жыл бұрын
Welcome
Brilliant! Thank you so much!
@speedkar99
4 жыл бұрын
You are welcome
This was more informative than I thought it’d be
@speedkar99
2 жыл бұрын
Glad you learned how mufflers work
Good job.
I understood it all..... The toothbrush was a great teacher.....
@speedkar99
2 жыл бұрын
Glad it helped
Nice sound w/o exhaust
Thank for sharing.. great Vidio..
Well done
I loved how you seemlessly transitioned from using the toothbrush in explaining the body of the muffler to using it to explain the science.
@speedkar99
4 жыл бұрын
It's my sidekick
Very informative video chumlee
@speedkar99
6 жыл бұрын
+Richie Hanley thanks
Great explanation dude. Subbed.
@speedkar99
6 жыл бұрын
Thanks for subbing, check out my other videos for more!
Good vid, good explanation
@speedkar99
5 жыл бұрын
Sure is
Watching these videos could make me a qualified mechanic 👍
@speedkar99
6 жыл бұрын
+Nick Makaia hmm Mechanics don't chop stuff open or know how it works, they know how to diagnose and replace.
@nickmakaia5166
6 жыл бұрын
speedkar99 in order for a mechanic to diagnose and replace, wouldn't he or she know how it should work first??? Unless you're someone who reads 710 where the oil goes in. Lol
Thank you !!!
Nice vid!
Best channel..u r as good as Chris fix channel
@speedkar99
6 жыл бұрын
+TheRouteShow thanks. Why do you say that about him?
thank you
Very clear, informative and concise....and I like the 'used-toothbrush pointer' too. Where can I get one? I bet it's 'branded'🤣🤣🤣. Indeed a garage classroom! Have since subscribed for the 'classes'. 🫡👍🙌
Cool vid....
Great. Thanks.
Very helpful. Informational
@speedkar99
5 жыл бұрын
Thanks
Thanks a lot sir! Making a homemade muffler/baffle system on a motorbike. I've done this before but I keep forgetting the basics! Lessons that I keep learning again and again! Hey! Just like that song lyric from Two Kevins by the band Cigar. Anyway, thanks again! Peace.
@speedkar99
5 жыл бұрын
Awesome! Glad you learned something
Cool. Thanks. 3 inch exhaust systems common? I've got a stove I made from scrap metal and was thinking of using old exhaust pipe and maybe even muffler in it if I could find it. i've seen some different stove systems that have a similar concept as the muffler with baffles and such.
nice video
Nice explanation , I've heard from my mechanic that if u start a car's engine don't shut it down straight away as the water vapour will condensate in the cold muffler and resonator , let it run for few minutes until the pipes become hot then water won't condensate and this will prevent it from rusting
@charlieangkor8649
2 жыл бұрын
Rust needs oxygen to form. The point of car engine is to consume the oxygen from air to burn fuel and emit exhaust gases that don't contain oxygen anymore. So how could the rust form when there is no oxygen?
@OhioBahn440
2 жыл бұрын
@@charlieangkor8649 do you leave your engine running 24 hours a day 365 days a year? if not, there is oxygen and water in your exhaust system
@hxhdfjifzirstc894
Жыл бұрын
@@charlieangkor8649 Yeah, how could an exhaust pipe get rust on it? Obviously, exhaust pipes never get rust on them.
Super cool!
@speedkar99
Жыл бұрын
It sure is neat
Thank you for the knowledge magic-talking-toothbrush-with-hands!
Hey drilling holes as you advice at the end to prevent rust and water accumulation wouldn't that equal to more noise ? as sound will exit through those holes instead of the chambers
I like how he is using an old toothbrush to point at these complex equations
@speedkar99
4 жыл бұрын
I like the teach-brush too
Thanks very much. Great explanation. (It was better with the toothbrush than the screwdriver.)
@speedkar99
5 жыл бұрын
Thanks
this guy is great
@speedkar99
6 жыл бұрын
+P Wilson amazing
interested presentation .
@speedkar99
2 жыл бұрын
Thanks
Our teachers also not teach that much in deep Thanks for this video!!🙏❤
Wow, this is so interesting
@speedkar99
6 жыл бұрын
+Mishir ali glad you found it so
professor Toothbrush
@speedkar99
7 жыл бұрын
...reminding you to brush your teeth! :)
@jangkulungkamei8215
4 жыл бұрын
Haha...
i like how u present the components of the video.. also the fact that u do it with a dead tooth brush: D ..kudos brother
@speedkar99
6 жыл бұрын
+hybrids0ldier thanks and kudos