See Through Catalytic Converter
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- Опубліковано 26 вер 2024
- Ever wonder what's happening inside your catalytic converter? I Make a See Through Catalytic Converter to see what's happening inside the catalytic converter when it's functioning.
you can clearly see that when it's not within its normal operating temperature it's not doing too much, I'm guessing this is why most cars put out the majority of their pollution during the first 5 minutes of startup.
if you're interested in learning more about how the catalytic converter works and the process that happens inside there are a few links to some really good videos below
Donut Media
Catalytic Converter: How It Works | Science Garage: • Catalytic Converter: H...
Engineering Explained
Catalytic Converters - Explained: • Catalytic Converters -...
Automotive Basics
How Car Exhaust System Works: • How Car Exhaust System...
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Watch this in 4k when possible, it looks incredibly awesome !
Carbon 12
www.c12.tv
Produced By: Carbon 12
Directed By: Matt Mikka
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Check this out ua-cam.com/video/Jj-ufVglr6M/v-deo.html a very informative and entertaining video on the catalytic converter.
i feel like you should wear a gas mask sometimes
You make some incredibly interesting videos man!
Hi makes a transparent Supercharger
Bhow much for scrap metal
Great video im sure you can find a way to fit the catalytic pice a little better and then make some videos of clogged catalytic vs cat cleaners im really interested to see how good they work but you definitely did great on this video.
As an engineer who works for a company that designs and manufacturers Catalytic converters, this is awesome!!!! I sent it to my whole team!
Thank you so much ! I've been waiting for somebody who works in that industry to comment.
Can you tell me why a California Cat Converter is $1200 vs an out of California cat converter?
@@dudewtf1776 Can't say exactly as we just build em, so I don't always know the application. But usually, it's a few things, more platinum on the substrate means a better reaction and a better burn. But also means more money. Or the addition of another substrate so you have twice or more the burning power. That's what adds cost, more of a costly metal. Or more of the substrate brick itself. (Move to Michigan, we don't even have inspections here lol)
@@dudewtf1776 How about a starter 2 br condo is $800k?
Ian, i work for Corning Incorporated the company that invented it and sold the first one to GM in the 70s. i work in the plant where it all started
Amazing job! I've always wanted to see a catalytic converter while it's functioning! Looking forward to the next video.
Project Farm You guys should definitely do a collaboration video
Yes! Collab!
not much to see honestly unless something is wrong. They won't "glow" unless there is way too much fuel in the exhaust. Since what is happening is just a chemical reaction that just generates heat. automotive 3-way converters generally run at between 1200 and 1600 degrees F when they are operating properly, but can work as low as 800 degrees. below that, they don't operate correctly, and above 1800f you start to damage the retainer/holding material honeycomb.
@@chubbysumo2230 You're right.
In newer cars with leaner engines can spit out exhaust gases at around 900-1000 degrees C, most likely turbocharged cars, but even a NA engine could do that.
The temperatures are only there at max. Load, but constantly driving 100-130kp/h also get's the converter toasty. ^^
The Video showed why the coldstart phase is so important: The converter warms up fast and sooner starts to break down the exhaust gases.
Thank you!! That last video you posted, it was just hilarious!!
What I found most interesting was the difference that was quickly apparent between the inlet and outlet sides of the glass! The inner surface of the inlet side very quickly became dark and cloudy, while the outlet side after the honeycomb stayed clear and transparent - a perfect visual confirmation that it does what it is intended to! Great video, thank you!
Sort of, anything blocking/restricting flow of exhaust will get sooty.. I done enough custom exhaust work on my own cars to tell you that.. see y pipes with door build up after the cat.
It's actually the opposite - the inlet side was clear while the outer part was dark.
It does something but it's just breaking down the ash and gasses into another form NOT removing them! Burns cleaner but the particles are just smaller now. You can stand next to a running car and not smell anything but still start coughing. We're still being affected the same way.
@@enigmareach1129 it's still better to be breathing mostly carbon dioxide instead of breathing in nitrous oxide and other worse stuff
@@pilotavery Sure but no one wants to address the 500 lb gorilla in the room which is the fact that upper respiratory diseases are ten times more prevalent than they were 30 years ago. Everything has a down side.
Year 2030 - Alright so here we have our fullsized see-through Atomic Bomb and here's the small second one. Fair warning this bomb is loud.
M0o
M0o
M0o
M0o
M0o
Seriously as a mechanical student you are teaching better than the University. I never understand the work of the cataliseur better like this wonderful video.
When I was a younger I LOVED blown up diagrams, cross sections, etc and had a bunch of picture books explaining/showing how things worked or what they looked like. Your see-through series takes me back to that same curiosity and wonder.
I have been studying jet propulsion, engineering, rocket propulsion and Aerospace since I was 7, I used to have exploded diagrams all over my walls in my room. I know exactly what you're talkin about!!
Warped Perception my man!
Take a scrap piece of leftover catalytic material and hit it with a propane torch until it is red hot. Cut off the flame and then quickly expose the red-hot area to a gas stream and you will see it glow red hot again with NO open flame.
Cody’s lab did a video on catalytic material some time ago. Worth the watch.
Thank you for the very cool video and please keep up the great work.
Thank you and regards to Briggs
Butane soldering iron does the same thing.
Funny you say that, I had a shot that I was supposed to use in this episode but I ran behind schedule. I take a piece of catalytic light It up get it warm and I not only hit it with propane gas, I hit it with a scary amount of propane gas...lol. it look like the damn sun !!!
Dope
@@WarpedYT That shot is going to make to one of your channels eventually right?... I want to see that shit...lol.
Only mower in Illinois that would pass emissions.
Lol !!! Great point, that's awesome
I give up. I'm titling out-of-state. Three failures perfectly running Grand Prix. Plus, the privilege of paying more!
@@iditarod4081 that's why the 3.8 was discontinued. One of the most reliable engines ever built but couldn't pass emissions.
@@tylerwhite3248 Really, cool to know thank you. Yes i love my GP, & my 3.8s (had a bonneville before, its' 3.8 is why i stuck with the line..). I might research it more now that u mentioned it. Purrs like a kitten and the 02s and mufflers are brand new, but I'm not doing the cat just for the heck of it, I've analyzed it over and over with my OBD and it's fine. I have begun to notice that others with GPs tend to I have mufflery sounding problems too, I assumed it's something with the dual exhaust but I'll look into 3.8 emissions issues
@@iditarod4081 The muffler issue is probably the resonator. They always rot out. I just cut them out and replace with a glass pack. Runs just as quiet. Not sure of emissions, as we don't have to deal with that here
This is absolutely the most under-rated channel on UA-cam. The work put in and production quality is extremely great, and why this is not on the discovery channel eludes me.
agreed
You can also just heat the honeycomb with a torch to get it warm and then put the torch out. Then just blow the gas from the unlit torch through it and it will burn without a flame and get the cat material orange hot. I always found it fascinating to watch something burn with no flame because it's just so counter-intuitive.
That's one of them Cadillac converters.
NO! A cataract it's one of those Japanese luxury vehicles.
Jeff Liggett 🤣🤣🤣 yes!
I work at an auto parts store, once had a customer ask if we had a Cadillac convertible in stock.
@@markjmarkjack Shoulda asked "Which one, the Allante or the XLR? Maybe something older? Cause we'd have to order it regardless!"
@@man_on_wheelz 🤣🤣
“I started running rich and the cat LOVED that!”
*in reality cat did not like that and in fact can be damaged by running too rich*
Lol... Good point. Well I guess I should have said " I loved that"
Warped Perception: [Loved that]
Cat: [Did not love that]
Everyone else: [loved that]
I always thought the lean mixture will heat it up and burn the carbon off cleaning it but didnt think rich mixture would actually burn the cat by overheating.
I was so sure rich mixture would foul it like a plug :D
@@eamh2002 there's a difference between cat and DPF wchich indeed is made to burn carbon
Yeh
this is why you dont park cars on tall grass when you've been driving a long time.
I know someone whose car burned down as a result.
pdgeman or dry leaves...
Damn I wonder how many wildfires started due to this
Funny because if you dont have cat then youd often have backfire that could really start a fire
@@bernatzel17 yep. My old 66 Plymouth was sitting in a field for a cpl of years fired it up backfired because the gas was old and plugged one of the jets.. As it back fired shot flames out. Lit under the car on fire. Drove it to a where e dirt was. Grabbed a hose to put the field out. Luckily it was not a really dry field.
glass: *survives brutal vibrating and getting rattled around*
also glass: ᶜ ʳ ᵃ ᶜ ᵏ
it cracked due to temperature difference
Yeah, rapid cooling is real nasty to most types of glass. Even Pyrex is not exempt. I recently exploded a much-less-than-hot glass mug just with insanely cold ground water, during the 2021 deep freeze. (That one was definitely not Pyrex.)
As soon as I read this it cracked
@@arfyness pyrex also uses a shittier formula nowadays
Just goes crack
I made of one of the first Cats for GM when I was younger, it was sent to Arvin Bosal in I think Belgium for testing. We then made all the lightweight stainles manifold and heat shields for a few years at prototype stage. Great experiment to see how they work. I also noticed that the internals have changed removing the rolled fine wire mesh and the asbestos paper and replacing it with something which looks much safer. At the time many cars adopted the heat shields with two pieces of aluminised steel with a layer of asbestos paper between.
Cat converters are large honeycombs of platinum, palladium and rhodium, when the toxic unburnt gasses like carbon monoxide pass over them, they get pulled onto the surface of the metal, the high concentration of the gasses on the surface forces them to react and turn into non toxic gasses like co2 and oxygen
Also the reason leaded fules for banned, is the lead atoms would permanently bond to the metals in the converter, getting rid of their ability to catylyse these reactions, destroying the converter
Well, that and, you know...lead.
@@sentry4944 Lead isn't in fuel anymore and is not part of the catalyst either.
So that's why in Blues Brothers Elwood says about the Bluesmobile, "It's a model made before catalytic converters so it runs good on regular gas." Meaning, regular leaded gas. Nice!
Actually, exhaust catalysts are large honeycombs of ceramic material with traces of platinum, palladium and rhodium. The reaction is intended to produce CO2, water and N2; oxygen is used up in that process.
Lead poisons the catalyst, and makes it so it doesn't work properly. Lead also poisons people. Banning tetra-ethyl-lead use in fuel was a huge benefit to people, not just catalysts.
@@willmcgo8288 Sure but it made the cars run worse without the leaded fuel because the TEL also acted as a lubricant for some engine parts. So older cars either need lubricants added to the no-ethanol high octane fuels they were designed to run, or you need a modern (post unleaded era) engine in your old car.
I'm currently on set filming a new years video for the channel, I'm going to check everybody's comments tonight!!
Warped Perception I would like to see through a turbo it would be interesting
Catylitic converters are something almost every car in the world had until they were parked in
A neighborhood with a crack head with a sawsall
why?
@@AlainCarAudioManiac theft
@@six_point_seven1057 why would somebody steal it?
Cats are made with precious metals in them
@@LuxuryNoCap THANKS for sharing your immense expertise on this subject
The best part is when it breaks the seal creating a leak and turn into a pulse jet in slow motion! Nice.
I noticed that too, but checked here to see if somebody already commented about it.
@@Metal_Master_YT Drawing oxygen in to complete combustion
This was fun to watch. My father was the lead tech in R&D at Briggs and Stratton 22 years ago and that was back when they were testing putting catalytic converters on for california. He also did high speed photography for them and I got to watch the films of some of their tests trying to develop the converter. Fun stuff so thanks for this one :)
The flames at 5:52 happen because that tiny piece of catalyst was overwhelmed (can be seen because the whole piece got red hot), leading to flammable gases exiting the exhaust.
This is awesome! Very cool, seeing the difference in the exhaust before vs after the catalytic converter is pretty damn impressive. Also the honeycomb structure is great to watch when it glows. Thank you!
I found that very interesting as well, you can clearly see that there's no flame on one side of the catalytic oh, that really explains visually how much more fuel is being burned in the catalytic that was not burned by the engine
The high speed actually did reveal something neat on the small converter test. As the piston was going through its stages, you can see the flames/smoke would get pulled back into the exhaust very slightly. Than get blown away again. Very cool!
That’s what destroys Gallardos engines
As a auto mechanic engineer of 52 & years your video is one of the very best I have seen.!! Well done Mr warped!.
Hey Matt, a couple of future projects that I think would be really killer would be see-through drivetrain components, like automatic transmissions, torque converters, and maybe even a see-through rear end. Great video as always!
I have that in the books, it's coming pretty soon
I love how you can see the exhaust pulses move the flame around in the slow-mo shots. You can clearly see what I believe are moments of valve overlap during the intake stroke, where it's pulling the burning air/fuel mixture back into the exhaust as the two valves are open at the same time, and what appears to be a short outward flowing pulse during what I believe is the compression stroke. Most Briggs/Tecumseh/other similar small engines that I've encountered have a small bump on the back of the exhaust lobe on the camshaft to relieve some compression to make them easier for the consumer to recoil start. A common (and basically free) modification for these small engines is to grind that compression relief bump off the back of the exhaust lobe so you get full compression instead of pushing some of the mixture out the exhaust. Makes it a bit harder to start but it's a "racer" trick from older go-karting days.
Yes !
WHAAT ? is that why ? I remember last year had to clean up valves on a generator. I was very confused why the semi open positions... Really had my head messed up.... These new cheap gens have the cam vent SO close to the intake it often pulls oil in. Which in turn oils the air filter , and if the customer never checks the filter,, totally fks everything. Have you really cut that part off the cam as you say and ran it for a bit ? I imagine there are other engineering compromises manufactures might lax on when they can afford lower compression
That's fucking sweet hahahaha
@@mrsc1914 I can't speak for your engine specifically, but on an old Techumseh 8HP(from a snowblower) I had that was modified for racing use the small "relief lobe" on the exhaust side of the cam that was used to make it easier to start was ground off to allow for increased compression. it also got stronger valve springs to handle higher RPM and a bunch of other race oriented mods. The last newer generation single cylinder engine I had apart used a plastic camshaft... Pretty sure it was a briggs OHV engine from a generator that got run without oil. I couldn't believe the cam was plastic, gear and all, injection molded. insane. They don't make them like they used to.
those sliced cats does look like some minecraft structure
It really does, that's exactly what I thought when I was building it
here in germany the short form is kat and i was like who tf slices CATS in half o.0
@@3lp4u my exact thoughts when my friend was listing his cats as second hand and selling for huge bucks. I'm like how does it look? Fluffy? Short haired?
Turns out he wants to swap his performance catalytic converter to stock for his honda.
ducttaperulestheworl yeah I’m not gunna lie, ever again
The exact thing I was thinking 😂
This is a "burning up a catalyst" demonstration - not a catalytic converter demonstration. Essentially this demonstration combusted fuel resulting in temperatures that destroyed the catalyst. Typically a catalytic converter will degrade at temperatures above 1200F -.
It wasn't destroyed though. The most damage that was done was just from sawing it into shape
You see flame because the catalyst can't keep up and there isn't enough oxygen stored in the catalyst to do it's job. An EFI system is constantly switching slightly lean/rich to allow the catalyst to store oxygen to allow it to burn HC when present. When exhaust in this video which is super rich (orange flame is indicative) reaches atmosphere it combusts with a flame. You see some flame at the back of the catalyst here because there is some reverse flow every stroke. Excellent video.
In the 70s they had cats and used carburetors with no computer. They did inject air with a pump to help burn the hydrocarbons. 76 Monte Carlo and 80 Citation v6 were examples.
I am surprised the orange sealant held up as long as it did.
Me too,
william killingsworth We used to use red (at that time it was very hard to get ) for header gaskets , Was one of the smartest then we ever did.
100% URETHANE ONLY
After reading some comments it is clear that many people do not know what a catalytic converters actually does
Adam Kegg it helps burn off unburnt fuel and makes cars exhaust cleaner
I know what a catalytic converters does
Aight big man, we all have the power of google. The knowledge of how a catalytic converter works is next to useless.
@@him_899 okay fool, the next time im held at knifepoint and told to explain operations of a catalytic converter, ill blame you for me getting stabbed. people like you are why that first dude was comfortable going around threatening people and why i got stabbed.
"its just useless info." tell that to the scars on my kidney and abdomen.
@@FWAKWAKKA Ok schizo
The cracked glass was satisfying.
In your first attempt converter started to glow much faster even having higher mass and being attachet to big conductive piece of metal because the seals at front part of your construction ruined, letting air in. In your second attempt with the glass tube you can see that ceramics of converter glows better on the backside because exhaust pipe after converter is short and lets the air go inside.
Actually converter doesn't "like" (starts to glow better with) the richer air-fuel mixture because there's no oxigen to burn hydrocarbons. In your experiment oxigen was coming from the ambient, that's the reason of glowing better. If you run rich with long pipes and good seals, you'll see that temperature drops down in comparison with stoichiometric ratio. But if you run so rich, that there will be missfires or switch the ignition off still adding fuel you can even melt the ceramics.
So my proposition for a new see-through converter video is to make longer exhaust pipe, better seals and install a valve before converter for controllable adding of air into exhaust. Then run rich and add air.
If it will not melt down, then make revs as high as possible, and switch ignition off. All the fuel and air will reach converter and mostly burn in there. And also it would be better to load the engine.
I love these kind of videos, man! It’s so great that you’d take the time to do this for us. Much love, friend.
Thank you! Sending love your way as well !!
I studied about this thats why when I saw your notification I hooked up to see. Though I appreciate it took a lot of work for u to make it
Now can you do one with a diesel engine & DPF(especially during the regeneration phase)?
Yup.... Coming up soon.
Nice. I've been around diesel machines and that regen gets flowing like a jet engine also extremely hot. Looking forward for that video
@@WarpedYT really looking forward to this
@@WarpedYT don't recommend doing it in your shed. My partner said her car was running different soot at the back of her car told her to give it a bit of a rev, it shot white smoke out, it felt like my lungs where being scrubbed with a wire brush.
After I got my breath back and wiped the tears from my eyes I said to her "it's okay it's just the the stupid pdf burning off"
@@remyche8768 I would disagree. carbon build up is probably from burning oil and that would explain the white smoke. Also you dont get any visible vapor while in regen. also only diesels have DPF. And if a DPF was dumping alot of smoke in to the air it's not doing its job. something is wrong with it.
Thank you. I invented this in 1961. My grandfather owned a muffler manufacturing company. At 16, I was put to work as a machinist apprentice in the experimental shop. We had a big Chevy engine on rails, driving a generator for load. I was amazed to see the glowing pipes on the exhaust manifold.I knew enough chemistry that I thought hydrogen peroxide would convert carbon monoxide to carbon dioxide. So, how do you make hydrogen peroxide? High heat, water, and a platinum catalyst. We had all of that, except the platinum. My father was Sales Vice-President, and he dismissed my “invention” as kid’s fantasy. I think the first cats came out in 1974.
BTW: today, I think it is worth investigating the enzymes the bombardier beetle uses to produce hydrogen peroxide at ambient temperature..
That's pretty cool, you invented the catalytic converter? That's interesting I'm not familiar with the enzyme from that beetle, but I will do some research. in my opinion there has to be some way to recover all of that wasted energy going out of the tailpipe. It just seems like such a waste.
Warped Perception The leading researcher on that beetle used to be at the University of Kentucky. J
Interesting story thanks for sharing. What else have you found particularly fascinating, are you an inventor that has brought innovations to reality?
Avery I have no quarrel with that. I never reduced it to practice.
Why did I keep squinting like I was going to get glass shrapnel in my eyes if the glass tube shattered? Haha.
Cool video.
Inside a diesel dpf? How about inside what ever the def fluid does
dpf and def fluid ? u mixed some up there ;)
@@heinzkot360 ik they are two different things
@@VFio689 ouh okay i was just a bit confused about your comment ;)
Diesel converters use a slightly different process to trap and break down NO2 gases. The SCR system uses a base metal catalyst to save money, and a reagent containing ammonia (DEF) to facilitate the reaction.
@@Nighthawke70 im a carmechanist in germany ;) i know ... i was just convused about him using two different systems in that relation ;)
NEVER wondered before, but I do now, lol.
(How I love a channel that makes me "wonder")
Wonderful ;-) .
I agree.
Thank you !!!
@@WarpedYT
Au contraire, thank-YOU Sir ;-) .
Good job. It's clear to understand how does it send a signal to the car computer about fuel excess, to reduce the mixture.
CO + NO2 + CH3 --Pt-> CO2 + N2 + H20.
The "--Pt->" in this case means that the chemical reaction is being carried out using a catalyst, in this case Platinum.
Grant Seuser Ok, I just didn’t know if it were possible to show the above chemical equation with more than 1 catalyst
Sheldon?
I’ve got an idea: how viable do you thing a see through exhaust header would be on an OHV engine?
Headers get way too hot. Maybe if it's made out of glass it will survive
I will try
@@blowndome if its on this stationary engine sure, but putting glass in an engine in a car for driving is a bad idea
@Swampy it looks really Cool at night
Very interesting! I really like the videos with the see-through engine parts, they give a clear picture of what's happening inside of an engine.
Maybe it would be interesting to see a slow mo of a camshaft when the engine is revving to it's max rpm. Especially if the springs aren't good enough, to see a floating valve.
Would be interesting to see what injecting air into the exhaust ahead of the cat to provide extra oxygen like the car does with the air pump. Bet it would have gotten much hotter much quicker.
I'd love to see that on video
I’m thinking that could be explosive once it reaches a level of heat and oxygen levels are higher.
Its a wonderful scientific lab educating the masses of the world without spending millions of dollars. Salute Sir!
Haile Okbe, Toronto, Ontario, Canada
wow my 15 year old self has always wondered how a cat looks like when its doing its job and im amazed :D thank you for posting this
You always come up with excellent ideas!
Not always but you are motivating me! In my mind they don't always seem so great...lbvs
Was amazing to see that thanks for figuring out a way to show it
This demo of yours is the most straight forward NOT LOADED with Egomaniacal BS!!! The setup with the motor's exhaust, the two different cats, were both as clear as day. This demo should be shown in automotive theory classes everywhere.
Thank you.. I have many more coming soon
الحمد لله على السمع و الأبصار و الأفئدة.
Alhamdulillah for sight, hearing and heart.
Thank you very much for the information.
Tip: Catalytic converters "clean" themselves at high temperatures, gives you a reason to rev your car every once in a while ;) extends the lifespan of the converter and it's fun too, especially if you do a lot of "slow" city driving let her rip every now and then on the highway to clean out that hard working platinum in there
And, interestingly, catalytic converters don't really begin functioning until about 400 to 600 degrees F.
Casper Born na. I just took mine off.🖕
@@mitchellmitchell6938 Well, funnily enough, if your car is more than about 15 years old your catalytic converter is likely not working anymore anyway: Massive stresses of very high heat and vibration will eventually take their toll on it. So in that sense you might as well not even have one on your vehicle! In my state they got rid of emissions testing years and years ago so no one would even notice if I took mine off.
@@JustWasted3HoursHere what state is that?🤔
@@number015 its not Illinois! We got checks every two yrs
I knew they wouldn’t sustain, BUT a neat thing to see. We all have an idea of its mechanics, and better to see a neat bench test.
0:32. He's using a nail for the spark plug. Nice!
Watch the see-through engine series
As a random UA-cam viewer who kills plenty of time watching videos, this is awesome!!! I showed it to my cat.
It's amazing how well this demo worked, good job! The flame at the back indicates the cat is not handling the load, though!
what about connect the see thrugh cat. converter to diesel engine?
or have a try to build a gasoline fired furnace with see thrugh cat. converter But not flame inside?
The catalyser heats up when you enrich the mixture is due to the higher output of unburned products which the catalytic reacts to more stable gases
I've always wondered about the catalytic converter on today's engines. Thank you for doing this episode!
As a person who watches UA-cam on a normal and almost excessive basis I find this freakin amazing!
This dudes craftsmanship would be highly appreciated in the hood
you should attempt this with a Diesel particulate filter.
6:05 You just reminded me im gonna play Pyro in TF2 today
Fascinating vifeo!
The reversion was very interesting. Would love to see you run an anti-reversion chamber in the same test and see if you can catch the exhaust slugs getting caught.
I'm very mechanically minded have been a mechanic. Built an high performance rx-3 station wagon way back in the day (80ish) so I was familiar with the sunrise catalytic converter.
Still was VERY impressed with the experiment. It just was so interesting to actually see it working so well.
It's not supposed to be glowing underneath your car. If you ever see the case of a converter glowing hot. You have a problem! It means that it's falling apart on the inside and clogging itself up or the engine has been running too rich or burning oil for an extended period.
Exactly. Misfires and rich conditions rapidly deteriorate the catalyst and in come cases the valve overlap allows the engine to pull the abrasive particles from the exhaust into the cylinder and ruins the rings and cylinder walls and the engine consumes oil and runs poorer.
@@Vile-Flesh yeah I could see that. I have never really thought about it or heard it mentioned before. But your right it could happen. What especially comes to mind is some engines that have pre cats, or "mini cats". They are only a foot or less away from the cylinder head. So I'm sure those would be very likely to suck those loose particles backwards.
Even in this video you can see how the pressures of the exhaust flow backwards. It's almost like the engine is taking breathes. This process is used in 2 stroke engine exhausts. Where the exhaust systems shape and size is tuned specifically to help those exhaust pulses to refill the cylinder under back pressure. Also even 4 stroke engines need some type of exhaust to be able to run well. Or even run at all. Because of the same principals. Recently the exhaust fell off my old car with a 318. So the exhaust ended midway under the car. Only a few inches after the converter. No muffler, no tail pipe. The engine gained a slight bit of power. But the fuel mileage dropped ALOT. I presume this was because of loss of gasses that would linger of reburn.
Thanks to the YT "bot" this popped up today. Years ago I was driving home from work in my '89 Pontiac Grand Prix (rare 5-speed SE). Suddenly massive misfire! Got home and the cat was RED HOT! A little diagnostic work and I found a dead coil. Or so I thought at first. Actually the ignition module that fires that coil failed. 6-cyl "waste spark" setup. Three coils each firing two cylinders simultaneously. Each cylinder fires twice per cycle. Once at normal ignition point and again on the exhaust stroke. Emissions related. So when it went TU my 6-cylinder became a 4-cylinder dumping 1/3 of its fuel into the cat! Good thing I wasn't far from home when it failed. Next day after an all night cooldown I took it to the Stealership two miles away (which I rarely do) and told them what the problem was. They replaced the module (all three coils were good) and told me the cat "probably" was OK. I guess it was because it lasted 140,000 miles before I sold the car!
Hey, enjoy your vids! I had an idea on my head this am and your channel came to mind. Using the phantom to show a fuel injector working at varying duty cycles. I would find it interesting to see if you could pick up the frequency in the spray pattern. It would also be neat to simulate engine rpm so the duration of injector was also indicated. Thanks for the great videos man, making youtube a better place!
Finally I always wanted to see how it looks, thank you!
Just liek the see through engine videos, it's so interesting to see mechanical things working in real life rather than a diagram. Thanks for the video!
Quick tip next time you do a see through anything that involves hot like this I recommend you use Quartz glass since it’s designed to be used with heat
Pretty damn cool. Already knew what it does and how it does it, but being able to see it just adds to the knowledge.
great video :D
In Nigeria we call the catalytic converter 'indomie' because it looks like uncooked ramen noodles.
That's funny
Hey Mr. Warped , I want to try putting a catalyst on my riding mower and generator, to keep the air clean. Any sources for small cats?
Yes officer..... this comment here
Thanks for adding that cracking glass part.. that was a nice touch 3:50
nice use of a vibration dampener! I use those in refrigeration to stop vibrating pipes from bursting. Dude you are so creative!
Watching that glass crack, was oddly satisfying.
I felt a great disturbance in the Force, as if millions of meth heads suddenly cried out in terror and were suddenly silenced.
one good reason never to drive with a misfiring engine
y
backfire doe 😳 💥
@Jimmy S Seems like you lot about it. Do you know if the engine control unit recognizes that the engine is misfiring and perhaps let the driver know?
Just add a rocket nozzle to your exhaust :D
@Jimmy S this happened to me. my vehicle was misfiring due to a design flaw in the ECU. misfiring busted up the 1st cat. when i got the ECU fixed the remaining pieces of the 1st cat jammed up inside the 2nd cat and reduced the exhaust flow to the point that my vehicle could not properly accelerate.
I enjoyed your work! I was A tech for about 15 years. So I can relate to your interest I found it interesting the amount of restriction it produced as it raised in temp. Nice work good stuff and thanks for the entertainment
8:10 you don't need to worry about that because that video is just perfect! of course it is not a GM or Ford factory, it's a "garage", but the very idea of it, of showing how this thing works is just sensational! I loved it, for me, this video was perfect.. very teaching, very useful, thanks a lot for making it! you're the guy!
That's why they say don't park over dry leaves/grass/debris
T H E Y , don't say it enough. 👍
If you drive like maniac than catalic converter can be hot to burn grass. Nobody drive like rally drivers
Time to hook it up to a rotary :p
Oh yeah
Another great test partner. What makes these test great is that if it weren't for you doing it we'd never know what would look like. Great and thanks for your test.
thanks, sterling effort. 'platinum' award winning video. Kind of like antilag in a turbo the way she heated up
Thank you
Buy Elrond EGLD
Crypto currency the next Bitcoin 😀
As crazy as you are you’re damn good at building things
🇺🇸🇺🇸🇺🇸🇺🇸
Good Job ❤️
Whenever I hear or see people talk about the catalytic converter - the first few things that pop into my head are: Rare Metal and egg-farts.
Man ! This was very educational! A lot of people wash this but in fact a lot happens inside the catalytic converters
Oh man, not too many videos makes me feel good to have watched it.....thank you, thank you, thank you.....now my engine research and new design is better comprehended and more complete.
Who else noticed dude only has 9 fingers? I would watch a vid of him telling the story!
either he cussed too much and it fell off, or he flipped off the wrong person
Would love to see you spray a shot of nitrous through a see through engine!!!
That's what it does. It burns off hydrocarbons by getting hot. I thought it was pretty cool to watch it in action though. Good idea in my book.
Gasoline cools down catalytic converters
@@FirstnameLastname-tw6yt in what context.
it gets hot *by burning off hydrocarbons,* not "it burns off hydrocarbons by getting hot" that's why its called "burn" cuz it burns stuff, and heats up cuz burning stuff makes heat.
aka, the catalytic converter burns un-burnt fuel that made it out of the engine, and by doing so heats up because burning the fuel makes heat, not the other way around. in the beginning it heats up cuz the exhaust is simply hot to begin with, after all, it was on fire a moment earlier. but once it heats up, it oxidizes excess fuel and makes its own heat.
@@Metal_Master_YT Catalytic converter by definition means that it helps to change things on a chemical level. Catalytic converters were invented to change nitric oxide that are created in the combustion chamber to nitrogen and oxygen. It also takes hydrocarbons and oxygen and makes carbon dioxide and water H2O. Water cools a hot environment down.
@@Metal_Master_YT lf a car is running lean which means there's more oxygen to fuel in the combustion chamber this will cook the catalytic converters that's why all cars are set up to run rich which means there's more fuel to oxygen that gets burnt to cool the catalytic converter.
I really like your beer opening transition.
I once owned a car that leaked oil on the catalytic converter. Mechanic said that I was "driving a bomb" and he shouldn't "let me drive this away".
Now I see why, holy crap does that sucker get hot. It's pretty impressive that it maintains its integrity under such conditions.
Me, bored AF
UA-cam : Wanna see the inside of a working catalytic converter?
Also me : HELL YEAH!!!
They look cool at night when you've got it so how the inside burns out of it all the glowing embers flying out of the exhaust
I used to have a catted 2 stroke , if you heat it up and pump air into it it will glow and emit almost clean air :)
I think what you're referring to is just a tune.. no one intentionally wants to spit a cat out
Butane soldering irons usually have a small piece of catalytic converter grid as their heat source to avoid an open flame.
So thats what it is! I was looking my iron few days ago and was thinking what material could glow that hot and not melt over hundreds of burns. Interesting!
@@Hellsong89 The old Portasol P1 butane iron used platinum wool catalyst inside each tip. Those tips were expensive even before platinum basically doubled in price to $600 an ounce and they stopped making them. And that was before Platinum shot up from around $600 an ounce to $2200, before settling in the ~$1000 range. Ironically, the catalyst grid irons are more efficient with less platinum. My $40 (1998 money) Portasol iron would sustain a flame at the exhaust with what it didn't burn. My $15 Bernzomatic iron won't.
that slow high def production is top notch, plus the editing, you can do it all