How a Catalytic Converter Works
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- เผยแพร่เมื่อ 21 พ.ค. 2017
- Here's what's inside a Catalytic Converter and how it works on your car.
The catalytic converter is located after the exhaust manifold, but before the resonator. Its duty is to convert harmful exhaust gases into less toxic gasses.
The catalyst inside the converter is made of platinum, rhodium, palladium and sometimes gold. These precious metals are very expensive, thus making recovery of used catalytic converters a very viable business. Replacement catalytic converters are also very expensive.
The catalytic converter forms part of a closed loop control system, whereby the ECU targets the air to fuel ratio for optimal combustion and efficiency of the catalytic converter. Often there is a rear oxygen sensor after a catalytic converter that keeps eyes on the oxygen levels coming out, to ensure it is working efficiently.
Running the vehicle too rich can caused too much unburned fuels to go inside the catalytic converter, causing it to combust and overheat. The catalyst cannot convert gases anymore and looses its effectiveness. That's why its important to check out the check engine lights on your car to ensure it doesn't damage anything down the road.
This catalytic converter was removed from a 2001 Toyota Corolla.
Related video: How a Muffler Works:
• How a Muffler Works - ยานยนต์และพาหนะ
please never get rid of that toothbrush
+Max Stump Its my brothers toothbrush, so unless he finds out about it I'll have it for now...
As my friend said before you're the wizard of giving maximum amount of info in least amount of time. Bless you bro
+moe raw Thanks. I'm trying to compress things even more but there's only a certain amount of info one can digest.
I love the "dive in and take a look" approach. Please don't stop cutting stuff to pieces!
+S ALB thanks
Yea I have this whole car to cut to pieces.
Please don't cut the brush
For a couple hours I've been watching videos on cats, nobody was able to successfully sum it up like your description,
"A catalyst is like an evil mother in-law who will break up a toxic relationship. The kids will come home. Be very unstable and wont stay for long. Before they find their own partners and move on in life."
lol +props. This is the best thing I've heard in a while on how to explain things to people.
never thought i'd be interested watching about a catalyst converter! good video mate! :)
+iBoolGuy Glad you learned something. Thanks
2:02 Catalyst is like an evil mother in-law lmao...been learning so much with your videos and Scotty Kilmer, thanks man keep it up.
+Lester A. Ordoñez It sure is an evil MIL, the one that breaks ties ! Haha
Great video mate, short and straight to the point!!! Wish there were more like it on TH-cam.
You are welcome!!
Hey, I just want to thank you for the video. I used this as my main source of information on a short speech that I'm giving on catalytic converters in my speech class. I also made sure to include the link for this in my works cited section on my speech outline. Again, thanks for the video. Gave a sub as well and I'm looking forward to more videos from you soon 👍
That toothbrush!! :D
+shaggyrock5 Yep, good old toothbrush
Excellent job all around from the efficient editing/explaning to all that hardware work to make this video. Haha I feel honestly lucky seeing this, since how else would I ever get the chance to see the inside of cat outside of dissecting my own!
+iPervy thanks. Agreed, not alot of people will cut open catalytic converters because they're actually worth a lot for scrap because of the precious metals.
Always preferable to watch other people dissecting their cats rather than you dissecting your own cat. That way you're not in danger of the claws and teeth.
Just saw this and with the first 2 posters! Very detailed, hands on, visual explanations! Fantastic!
I just showed this video to my environmental science class and they loved it! We're learning about reducing air pollution. Thank you!
You are welcome. Glad it could benefit your students.
Using a tooth brush as a pointer ............ I have seen it all now 😂
+Osama Bin laden oh you haven't seen it all
The brush side too. Lol
Oh bin laden cares about the environment !
I am a science teacher. Great video! It is now on my playlist for chemistry :)
Bro I don’t understand why you don’t have a million subscribers. Great work!! Thank you.
I wish I could. Please share on your Network
Don t stop releasing more videos proffesor Excellent explanation! Good bless you!😊
came from interestingengineering.com to here just for givin a thumbs up! Nice work!
+Emre MUTLU Thanks. Didn't know this video was posted there too
Fanks bro.. Great video. I learn so much in a short time and find I remember much more because of how you explain things together with the physical disection.
Thanks. Sometimes better to learn when seeing the real thing
Genius Explanation !
Straight to the point, thank you
Your welcome
I watched this and the muffler video. Very educational. I learned some things. And your videos aren't boring lol.
+Phuong 5oh I'm glad you find it helpful. Feed back is always welcome
This video helped me more than you know. Thank you
+Dillon McSwain That's amazing you learned so much in 3 min
Good job man. You're just like Chrisfix videos. Straight to the point. Subscribed!
Glad you enjoyed my video style
Great video as always!
Hi, where would a catalyst converter be situated in a Royal Enfield's Bullet 350? Will it b located inside the exhaust or somewhere in the bent pipe. Please help!!
Toothbrush has turn to spanner wrench...wonderful bro
Great video. Detailed. Pls help me understand better, So what happens if the content of the catalytic converter is scrapped out? How does it really affect the car or engine?
which filter is used in catalytic convertor to filter the exhaust gases?
Wow. I love this "series"
+charls seal thanks. More to come.
Great analogy.
+U Wot M8 Ahaha I agree.
Muchas gracias for this info
Good video...
A catalyst is a way or means of converting or changing something e.g. the flame of a candle is a catalyst for heat, light, smell, carbon, etc.
+Thommy Two Toes Times Three thanks and yes
So helpful man ,thnx
Thank you for another great video. What are your plans for the exhaust system on the Corolla? Are you replacing it or is the car going to the scrap yard?
+mrjost55 Thanks glad you enjoyed it. I guess you'll see my plans in future videos. Let's just say I never knew a Corolla could be this fun :)
What are the drawbacks of a cat free setup? Does ECU send rich fuel mixture when cats are not installed?
awesome bro...
Where do you get those spreadsheets
Holy shit why does the corolla sound so good haha
It sure does
Wow! Very informative. I had no idea what went on down there, you gave a good explanation. And, love your toothbrush! Thanks!
I'm glad it helped you understand
@@speedkar99 maybe I'll be a car DIY person if I keep watching the whole series :)
If we remove the cat converter and install the aftermarket exhaust in bike.. does it effects the engine
Tooth brush university is the best auto university to learn from
Haha
Can the catyltic converter be replaced when it's not efficient? What could determine or warrant it's change as a component or the entire exhaust system.
Very well done sir!
+smokesgtp thanks
Great information as usual!
+koksinsh thanks
The relationship part made it more easy to understand
Haha, is it relatable?
@@speedkar99 yes, very simple way to understand reduction
That was very informative, thank you
Hello profesor! Please tell me how to get all your videos during your 20 year explanation job. I would really appreciate it! Thank you
Hi, are catalytic converters reversible or interchangeable?
That teeth brush on the white board tho :))) hilarious
+moe raw Ah yes, my good old pointer.
Fantastic 😉 thanks for schooling me
Great job!
+Christopher McColm thanks
Nice video!
what is the name of filter which you cut ?
Very nice videos mate :)
+Ma Co thanks mate
good on you mate great explanation
+Nor Nijim Thanks mate
Thanks for info
mr arshad thanks glad you enjoyed it
awesome bro its realy awesome job you are doing
Thank you
Awesome video-very informative! I was wondering if you could do a stock catalytic converter comparison with an aftermarket high flow catalyst????
Thanks.
You really good at explaining it 😊😊😊
Thanks
Great video. Worth to be subscribed :)
+GayBomb thank you
Thank you very much for your efforts, you are doing great, US&Canada uses gasoline engines, if you had toyota corolla with d4d especially 1ndtv please cut it to every pieces for europe and asia users.
Helpful
Is the extra oxygen that converts unburned hydrocarbons to water present from the reduction of NO to N2 or is it just oxygen that's already present in the converter?
+mrsemifixit Its from the reduction stage.
Tooth brush auto technicians university is the best one to from all the auto industry technology, where the best master tech explains the hardest informations and be very simple to be understood by means you present sir many auto students paid alot of $ and do not have some one like you to tech them in the best way like you do even yours is free .Thank you very much Prof
🙂
catalytic convertor byke me lagate nahi kue ?
2:38 is this o2 sensor or airfuel ratio sensor
Some sources online show use of insulating layers in between the shell and the felt like material. Was it previously required but later done away with due to some developments or is the felt like material itself the insulation and nothing else is required? and which year model is the corolla shown here? early 2000's ?
+siva s 2001 Corolla. Not sure why it's there.
Hi, in my motorcycle aftermarket exhaust, they put the catalytic converter after the resonator, is it fine? or should be put before the resonator?
It's either can work we'll both. But for true perfomance ,catalytic converter and resonator should be taked out . It's depends on region or country that illigal to do that for sure😁
Is your Toyota Diesel or Petrol?
What is the purpose of a resonator?
thanx
What you did to this car after removing the muffler and catalytic converter? Please make a video of this.
I cut the car up. See my convertible video
Will this increase CO2 of your car? So let's say a car that has a fuel consumption of 30MPG should produce 181 g/km CO2, with a cat, would it produce more? Like 190 g/km?
Any chance we can find the cfm on a 1992 legacy? I want to get optimal performance
+DJ Statyk calculate it?
Great job...i like this channel
+Jay A Lay awesome thanks ?
Can you do a video on resonators please?
Hey I'll think about it...i still have the resonator somewhere
Great video as usual! ":)
+Martin Evan thank you
Carefull with that sawzall, should be holdin it closer to the object your cutting so it doesnt kick
+Jacob Peetz yes except I learn the hard way
Can you do the next video on what the inside of a toothbrush looks like?
+whiteclifffl I've thought about that but somehow need an automotive context to put it in...hmm
which material is used as a catalyst in catalytic converter
+Muhammad Umer Malik see description
That was a good video
Thanks
Love the videos.
actually the rear 02 sensor is supposed to read little to any oxygen as the converter is supposed to use it to reduce hc and co. Not sure you worded "make sure catalytic converter is outputting enough oxygen"correctly
Furthermore if the rear 02 sensor measures a lot of oxygen it will most likely throw a p0420 code for catalytic converter below efficiency.
+the doge ah i see, I guess I had it backward. Its job is the sane, to monitor that catalytic.
Now how do we go about separating the gold and the platinum out of that converter?
+hoangkimtran Melt it? 🤔
Does the direct contact of oxyacetylene flame causes problem in the proper functioning of catalytic converter ?
+Abuzar Khan If you overheat it for a prolonged period it might reduce the efficiency of the cat.
I feel sorry for the poor cat, that is awful.
i noticed on my car that mixture is not fixed on 14.7:1, it floats between 12-16:1 in closed loop below 3000rpm, and in open loop and rpm higher than 3000, it goes to 12:1 fixed, so if you floor it , cats can not reduce polution, it just can be destroyed by melting, what happened to me
It isn't always fixed
It's the ideal ratio
2:02 - 2:10 That cracked me up. XD
+Flash Chrome haha , it's true though, isn't it?
Can you make a video with the resonator
+rawbasic rawbasic ok I still have the resonator, can you remind me in 2 months when winter is over?
Love ur content
Thanks
I have the same used tooth brush under my bathroom sink to clean those cracks.
Same here!
That tooth brush!
Hard to say, but I'm loving that toothbrush now that it's a bit diffirent to assimilate informative videos on YT without it 😁
+erwin rommel information at the tip of your toothbrush!
👍
Why is the filter inside coated with such precious metals?
+Swagmaster 64 to encourage the harmful gasses to convert
Their properties are desirable in this application.
nice tooth brush pointer
+ziyad752 its my brothers toothbrush
So how does a resonator work?
+Josh Chen I don't think I'll do a video on that. It looks boring
resonator is just empty catalytic converter. empty pipe :)
The resonance enters the resonator and believe me, it resonates!
😊👍
I guess that must be mother in law's tooth brush
+Prashanth Rajan haha
She would be angry
Your channel I ❤️
+Epic Screen name thanks very much
1:45 Thanks for the sudden need of hearing aid...
+Mikkel Nielsen haha
Sounds great without a cat eh