at 5:27 you can se a piece of acrilic hiting his nuts at mach jesus, i would get knocked out from that. @WarpedYT answer is ''Lol... That's pretty funny'', is it? is it funny? 🤣🤣🤣🤣
@@Tommy-ye5vf Good eye, I actually thought I edited that part out I'm going to have to take a look again. But it hit my leg and it looks more dramatic in slow motion then it actually was.
BEST demo i had of this was a PILE DRIVER we used in the field erecting huge wind mill generators in a wind mill field. Seeing the MASSIVE steel drop down followed by a loud BANG! as the steel shoots back up (pushing the pile downward into the ground) the steel reaches the point of return and drops back down with fuel, then, BOOM! and it repeats blasting and blasting. It was aswesome to see the massife diesel piston basically
Your correct that the diesel fuel as a liquid has much more energy *(chemical) energy than a small amount of lose fire cloth or charcoal or cotton or cellulose solid This is why gasoline *liquid* and *diesel* and common Jet A fuels are liquid, easy to pump through hoses from tanks to fill fuel tanks in vehicles, fast, easy, cheaply
@@ElementofKindness I have encountered the friction fire roll and imo it's inferior. 😅 the piston works with anything flammable to hand, and can even dry the kindling in seconds and starts a fire in seconds, with minimal effort. with char-cloth I've gotten embers off of just one hit! full fire in 10 seconds. (note that he's using huge diameter bores here, but with a proper, pencil-width bore it's much MUCH easier and faster) from what I've experienced, only a BIC would be faster, especially if it's damp out. and unlike a BIC or a strike rod, a piston doesn't run out of fuel, you can just grab anything that'll burn and it'll work. 🔥♾
Very cool idea man. Keep in mind your "injection angle" is much too early. It should blow it up every time. Think about when the diesel gets injected on a Diesel engine. Great video man.
@@WarpedYT I could tell you were on that trail right away you pretty much mentioned it in the video - just worded it differently. Honestly man I'm really impressed at how you made all that to begin with. I wonder what would happen if you made the cylinders out of metal. Not that we could see much, but maybe a cut away cross section afterwards might show putting from "knock" or something? Or maybe you'd have made a gun and put a hole in the ceiling 😂
I make these for scouts using a ½" copper pipe stub out (sometimes also called air chambers), a wood dowel slightly smaller than the ID of the copper pipe, o-ring (fit on to the dowel and sitting in a grove that was carved in), and a larger dowel to make the cap / striker that the inner dowel is "plugged" in to (by way of drilling a centered hole in the cap). Hold the copper pipe in hand, and strike the striker on the ground (think upside down), and quickly let the glowing char cloth free on to kindling.
It could be Hydro locked by the time you hit the piston all the way down the fuel is compressed as much as I can so it has no choice but to expand and blow out the bottom of the tube
Could you try the same with water? I really wonder if the fluid(diesel) just failed to compress, and made the tube explode instead. Given you are hitting with a hammer, you would be stopping the hammer and using that energy to send the sides flying. As for the flames, you totally got it!
You could be right but, it was about the same amount of air in the chamber even with that much diesel, But if you look close you can see ignition for a split second before it explodes. Originally I was thinking the same as you said, but it seems like an exploded as soon as the ignition occurred, I think it just happened too fast
Interesting. I would like to see the time counter in the slow-motions. Very curious to see how fast this diesel combustion happens since people call it slow burning fuel.
Do you know what a Pile Driver is?... They were used in The Construction Industry back in the day.... Anyhow, same principle as your attempting to do here.... Look into it... Oh, and Ignition Occurs a lot easier when your Diesel Fuel is Atomized, like when it's sprayed through an Injector... AWESOME EXPERIMENT and VIDEO!!....
Thanks yes I have seen pile drivers, exactly what you said about atomization, I mentioned that in the video but I'm moving that into a separate video, wanted to keep this one simple. Thanks!!!
I've detonated WD-40 at work hammering on things with my big boy air hammer, I'm sure you can do it with diesel on an anvil with a steel hammer in open air.
The problem is the fuel is igniting directly on the compression stroke before it’s ready to go back up, unlike diesel in an engine where they delay the fuel injection and then the combustion event happens, pushing the piston back up
PVT or Pressure Volume & Temperature means that if you take a given amount of air at room temp that air has a certain amount of energy such that if you compress that air the same amount of energy now present in a smaller volume so more energy or higher temperature. In other words as the air is compressed it gets hotter because the same amount of air thermal energy now in a compact space (hotter) raising the air temperature. Compression engines for diesel, biodiesel, hydro diesel, kerosine, peanut oil or biofuels with longer molecules like diesel vs shorter gasoline molecules, means the block and head has to have a 25-50: 1 compression ratio or about 2-4X greater than gasoline engines, meaning the diesel engine block and head have to be much stronger and thus much heavier with more metal and thus also cost more + direct injectors cost more & turbo charging + intercoolers to chill the compressed air etc means more expensive + especially the multi stage emissions controls for on road diesel engines + DPF to filter out PM & ongoing fluid additions of DEF to scrub NOX to comply with Euro 5 and EPA clean air regulations / that means VW emissions cheat in the market capitalization sense + hybrid gasoline vehicles, means that TDI sales declines ongoing, even though in principle the Turbo Diesel Direct Injection engine idea great for 1st and 2nd and 3rd and 4th generation biofuels and even DME or dimethyl either fuel works perfectly sorta like propane, as a diesel engine fuel, in steel tanks like propane as a compressed gas liquid injected common rail or direct injected :)
@@WarpedYT I don't watch mr beast so I can't compare but the idea of a heptaoxygen molecule (1:37) with 7 oxygens bonded together is (as far as I know) purely hypothetical and only possible at ranges of hundreds of gigapascals (15 million + PSI) in a metallic phase possibly found in some exotic gas giants or something like that
its call fire piston in you call. but im call gobek api. im claim this Technology coming from my coutry asian Indonesia. before born diesel.YES. DONE CLAIM.
I was taking a guess but I honestly can't remember off the top of my head which gases are released from cotton through pyrolysis I thought hydrogen was one of them
Hydrogen (H2) is generated during pyrolysis due to the thermal decomposition of organic materials. This occurs for several reasons: 1. Molecular breakdown: When organic materials are heated, molecules break down into simpler components, releasing hydrogen atoms. 2. Water vapor reforming: Water vapor present in the material or produced during pyrolysis reacts with released carbon, forming hydrogen and carbon monoxide. 3. Dehydrogenation: Organic compounds lose hydrogen when heated, releasing H2 molecules. (Source: META AI)
Char cloth is made of cellulose, which in fact is not only a carbon containing molecule, it also hold other atoms such as oxygen and Hydrogen. There are many sites on the molecule that contain Hydrogen. The relatively extreme change in temperature due to the ideal gas law, will cause the hydrogen atoms to become dissociated from their parent molecule. Then when pressure decreases the hydrogen atoms will be immediately seeking to fill it's s orbital. The easiest way to do that is by making the diatomic molecule H2
It doesn't matter if the diesel is compressible or not, that's a misconception. In this case there is a huge amount of air in the tube that is being compressed. It's the same as if there was no diesel in there and a solid bottom because the air is inside the tube being compressed at all times.
You could put one drop of diesel in that tube and still get an explosion! When you consider how little fuel gets injected in the average modern diesel to achieve combustion, you're essentially flooding that tube with diesel. WD-40 is pretty close to what you would need if you want some sort of vaporization. We always used that when we were building potato guns as kids.😄👍👍
Old trick i learned from a farmer and used to do with my spring airgun, to get more out of it, was to add a drop of gun oil in the skirt of the pellets before every shot. Every time it ignited i could hear the classic sound of cracking the sound barrier and the shot would go further. It also absolutely shredded the o-rings in the chamber, plunger and sealing faces.
This highlights why the injection timing is critical. Rudolf Diesel learned that the hard way when one of his engine prototypes exploeded, nearly killing him.
@@WarpedYT If you'd liek to thest this theory against the hydrolock theroy I have seen in other comments, di ti with a little acetylene gas, instead of liquid fuel like diesel. Acetylene is very well suited to compression ignition, and has been used as a not solvating starting fuel, for diesel engines, in place of ether.
The char cloth is nearly pure carbon. When it burns, the O2 gas becomes CO2, resulting in the same amount of gas, but hotter. Burning a HYDROcarbon fuel (like diesel) you have not just O2 -> CO2, but also O2 -> 2 H2O. You get 2 molecules of gas for every O2 instead of 1. So, it would be getting WAY more pressure spike with the diesel than with char cloth, even if the energy per KG of fuel is equivalent.
I don't think I've ever seen a video by you that wasn't interesting! I like to learn new stuff and see someone try the things I've once or twice have wondered myself.
Makes me wonder, how do they adjust the ignition timing on a diesel engine? It seems like mere compression ignition would be too inconsistent. Also, how do they stop the engine, cut off the fuel? I've seen videos of run away diesels where they have no way to shut them off.
Diesel timing is determined by when the fuel is injected into the chamber, in older diesels you could rotate the pump exactly like you would rotate a distributor on a older petrol engine. A runaway diesel is running on its own engine oil, most commonly its from turbo seals that leak or blow out and the oil from the turbo is sucked into the intake and burned as fuel. You need to starve the engine of air to stop it from running away.
Could you mention the pressures in bar as well pls? It would make it easily understandable for a lot of people! Otherwise that's such an educational video which could be used in so many classrooms- brilliantly done! Suggestion for the tube: Have a stronger one, maybe with increasingly thick walls towards the bottom?
@@WarpedYT Thanks. As I said, great video. I can just point people there now if I want to explain anyone how a diesel engine works. Where would we be without Rudolph....!
cant you convert? 1bar is close enough to 1 kgcm2 is close enough to 15 psi to be relatively simple, i thought... 60 psi is 4:1 CR, or about 4bar, or about 4kgcm2... 120 psi is 8:1... 240 is 16:1... comeon, learn some basic arithmetic. education should be about thinking for yourself, not having everything laid out in front of you. its the thinking part that counts.
@@Old_Gunslinger_Wild_Bill that's still my style but I just didn't have a good thumbnail for this one, as for the video this is a precursor video to the full episode, You will see what I mean soon. But I am rolling out my new strategy now I'm doing full episodes and then episodes like this. I'm just getting back into the game and sort of re-familiarizing myself with my workflow. I'm making big changes and trying to slide into it.
@@Emilijano249 I don't think anything is cheap and quick when it comes to these videos. It's just something I'm trying out right now, but this is not straight AI, I made the photo but some of the pieces are AI, normally I would have a good thumbnail but last couple of videos I've been slacking.
The problem with your experiment here is simple! The clear GLASS tube you are using for the cylinder... is made from the WRONG MATERIAL! Try using a more shatter resistant, clear material! Like maybe bulletproof glass! To more closely duplicate a cylinder made of the same hardness as that of metal. To simulate the wall thickness of a metallic block! Maybe use a chunk of appropriately strong clear plastic with a sufficiently smooth hole machined in it. Good luck! 😊
There are several differences between diesel and char cloth. I don't think the total combustible energy is relevant for your explosion result. One big factor is surface area. Pre-combustion the diesel is in vapor form, perfectly mixed with the air. So every tiny diesel droplet can burn at the same time. For the cloth it takes 1-2 seconds until the fire burned to the core of the strings. Another factor is combustion products. char cloth is mainly carbon, only producing CO2. Diesel is a hydrocarbon producing water vapor (H2O) and CO2.
Maybe you can try heating diesel to its Flashpoint which is something like 65°C or something. That Will allow it to be in a more volatile state and require less mechanical pressure from your hammer. Maybe... (I'm no expert) And thank you for all your really interesting and educational content!
Hey Matt, I was wondering (since you have a few mini jet engines) if you could modify one into a high bypass turbofan and get more thrust vs the stock design? It would be a cool project, and maybe Garrett over at Cleetus McFarland could trial it in flight. Maybe a collaboration to fund the project. I think the world's smallest high bypass jet engine world get some attention.
Also try with gasoline. Gasoline is more volatile, it turns into vapor easier than diesel, but has higher auto ignition temperature than diesel. 534f vs 410f. Should require more compression to ignite gasoline and it would produce a bigger bang because it burns faster after it is ignited. People have the wrong impression that diesel can take more compression, but that is false because in a diesel engine fuel isn't pre-mixed with air. It burns instantly when injected. Gasoline engine have fuel pre-mixed, so it needs to worry about premature (auto) ignition more. Gasoline in a diesel cycle engine would need even higher compression ratios and would be blowing pistons and heads because faster release of energy.
I had a good example of dieseling while playing with a pellet gun, we blocked the end of the barrel with one pellet and loaded a second pellet normally. When friring the oil in the barrel combusted and made a loud explosion.
It's basically about reaching criticality. You not only want the fuel, air and pressure to be just right, but also to come up to the ignition point faster than it can absorb the energy. A piece of loose cotton would serve much better this demonstration. Anything more, and it's just too powerful and too hard to ignite, as it involves more mass.
Matt, i didn't know if you had a slightly hollowed out piston, or flat at the end, but that may help a little bit with the end result of returning the piston instead of explosion? The other thought i would have had is trying a thicker material for the outer housing... But I'm sure that was a thought, but not able to get the material in a different wall thickness.
The tests with the diesel were experiencing pre ignition, this is a great visualization of how dangerous preignition is to internal combustion engines. Edit: i also think the compression ratio was too high, might have something to do with the pre ignition
@@IceBergGeo not a fan of AI images either. i generally tend to report anything with AI images, followed by do not recommend. to my way of thinking, AI images are a form of child abuse. i can handle fantasy but when theres no disclaimer, and small children have no experience or wisdom to rely upon, yet are exposed to such nonsense... we all know 'peter pan" or "where the wild things are" is fantasy, story books... but to have "educational" material intermixed with fantasy is simply not right in my mind. filling heads with BS. can have 04 though... oxozone/tetraoxygen...
I like the way the table height where these tubes are exploding are at testicle level. You are a pretty smart guy.
Lol... That's pretty funny
at 5:27 you can se a piece of acrilic hiting his nuts at mach jesus, i would get knocked out from that.
@WarpedYT answer is ''Lol... That's pretty funny'', is it? is it funny? 🤣🤣🤣🤣
@@Tommy-ye5vf Good eye, I actually thought I edited that part out I'm going to have to take a look again. But it hit my leg and it looks more dramatic in slow motion then it actually was.
“Test” tubes
@@WarpedYT Sorta makes you stop and think innit...
Blowing the tubes is what preignition is all about
True
Beat me to it.
Yeh fuel needs to be after full compression not before
BEST demo i had of this was a PILE DRIVER we used in the field erecting huge wind mill generators in a wind mill field. Seeing the MASSIVE steel drop down followed by a loud BANG! as the steel shoots back up (pushing the pile downward into the ground) the steel reaches the point of return and drops back down with fuel, then, BOOM! and it repeats blasting and blasting. It was aswesome to see the massife diesel piston basically
I have seen one of those, very interesting device indeed.
Those diesel pile drivers are so cool to watch
Fuel injectors in gas engines become Napalm Nozzles in a diesel. 😁
Nope
2 times you achieved a pre-chamber Diesel. 🤣👍
Dude, you make some of the best videos on all of TH-cam 👍🏼👍🏼👍🏼
Keep being awesome 😎
3:56 The engine has finally started :)
Your correct that the diesel fuel as a liquid has much more energy *(chemical) energy than a small amount of lose fire cloth or charcoal or cotton or cellulose solid
This is why gasoline *liquid* and *diesel* and common Jet A fuels are liquid, easy to pump through hoses from tanks to fill fuel tanks in vehicles, fast, easy, cheaply
Great demonstration. Seeing is believing. 👍
my favorite camp firestarter!
You mustn't have tried a friction fire roll yet. ;-)
@@ElementofKindness I have encountered the friction fire roll and imo it's inferior. 😅
the piston works with anything flammable to hand, and can even dry the kindling in seconds and starts a fire in seconds, with minimal effort.
with char-cloth I've gotten embers off of just one hit! full fire in 10 seconds. (note that he's using huge diameter bores here, but with a proper, pencil-width bore it's much MUCH easier and faster)
from what I've experienced, only a BIC would be faster, especially if it's damp out. and unlike a BIC or a strike rod, a piston doesn't run out of fuel, you can just grab anything that'll burn and it'll work. 🔥♾
so, preignition is blowing up the tube....CRAZY
FANTASTIC!LOVE IT!YOU ROCK MAN
Maybe Im just a simpleton, but the most basic things are the most interesting to me.
I agree
Between you and Todd, you guys have great videos.👍🇺🇸
thank you
Woooo super interesting as always🥰🥰
Very cool idea man.
Keep in mind your "injection angle" is much too early. It should blow it up every time.
Think about when the diesel gets injected on a Diesel engine.
Great video man.
thats exactly what is was, I def realized that while i was editing lol and then i read about rudolf diesel and how he learned this the hard way
@@WarpedYT I could tell you were on that trail right away you pretty much mentioned it in the video - just worded it differently.
Honestly man I'm really impressed at how you made all that to begin with.
I wonder what would happen if you made the cylinders out of metal. Not that we could see much, but maybe a cut away cross section afterwards might show putting from "knock" or something?
Or maybe you'd have made a gun and put a hole in the ceiling 😂
cool to see it through the clear tube
i thought so too
I make these for scouts using a ½" copper pipe stub out (sometimes also called air chambers), a wood dowel slightly smaller than the ID of the copper pipe, o-ring (fit on to the dowel and sitting in a grove that was carved in), and a larger dowel to make the cap / striker that the inner dowel is "plugged" in to (by way of drilling a centered hole in the cap). Hold the copper pipe in hand, and strike the striker on the ground (think upside down), and quickly let the glowing char cloth free on to kindling.
Saw a couple examples of precombustion , and how much more complete the burn was ,,, !
Bro needs special gloves for that 4 finger stubby hand 😂
When is that transparent aluminum released?? 🤔 We kinda need it now 😆
I think you were hydro locking your engine. :D :D :D
It could be Hydro locked by the time you hit the piston all the way down the fuel is compressed as much as I can so it has no choice but to expand and blow out the bottom of the tube
Could you try the same with water?
I really wonder if the fluid(diesel) just failed to compress, and made the tube explode instead.
Given you are hitting with a hammer, you would be stopping the hammer and using that energy to send the sides flying.
As for the flames, you totally got it!
You could be right but, it was about the same amount of air in the chamber even with that much diesel, But if you look close you can see ignition for a split second before it explodes. Originally I was thinking the same as you said, but it seems like an exploded as soon as the ignition occurred, I think it just happened too fast
Very cool! Great video
that's a cool video you made there
Could you set it with a crank & a pressure valve at the base, so combustion has somewhere to go, and you can achieve ignition with rotational energy?
So cool! Great content and experiments!
Use a thick fused quartz tube in stead of the acrylic. Should be much stronger.
Interesting. I would like to see the time counter in the slow-motions. Very curious to see how fast this diesel combustion happens since people call it slow burning fuel.
I should have included that, each event was three frames, each frame is 0.0003/sec so that means it would be 1000th of a sec or 0.001
@@WarpedYT thanks! Looking forward to see the further experiments.
Fucking BOSS ! as we used to say as kids. Very cool 👌
me encanta donde podría conseguir los planos de los pistones de fuego y como hiciste para calcular la relacion de compresion
Do you know what a Pile Driver is?... They were used in The Construction Industry back in the day.... Anyhow, same principle as your attempting to do here.... Look into it... Oh, and Ignition Occurs a lot easier when your Diesel Fuel is Atomized, like when it's sprayed through an Injector... AWESOME EXPERIMENT and VIDEO!!....
Thanks yes I have seen pile drivers, exactly what you said about atomization, I mentioned that in the video but I'm moving that into a separate video, wanted to keep this one simple. Thanks!!!
I've detonated WD-40 at work hammering on things with my big boy air hammer, I'm sure you can do it with diesel on an anvil with a steel hammer in open air.
early lesson when i converted a cox 049 to diesel... turning it over by hand with some wd40 and it fired up and gave me a nibble...
That’s Cool 🔥
let's press the piston with a diesel engine with a hydraulic press
Good work! Rudolf would be turning in his grave.
you mean akroyd, right? rudolf simply stole it.
@@paradiselost9946 Fire piston, invented 100 AD
The problem is the fuel is igniting directly on the compression stroke before it’s ready to go back up, unlike diesel in an engine where they delay the fuel injection and then the combustion event happens, pushing the piston back up
thats exactly what it was
PVT or Pressure Volume & Temperature means that if you take a given amount of air at room temp that air has a certain amount of energy such that if you compress that air the same amount of energy now present in a smaller volume so more energy or higher temperature. In other words as the air is compressed it gets hotter because the same amount of air thermal energy now in a compact space (hotter) raising the air temperature. Compression engines for diesel, biodiesel, hydro diesel, kerosine, peanut oil or biofuels with longer molecules like diesel vs shorter gasoline molecules, means the block and head has to have a 25-50: 1 compression ratio or about 2-4X greater than gasoline engines, meaning the diesel engine block and head have to be much stronger and thus much heavier with more metal and thus also cost more + direct injectors cost more & turbo charging + intercoolers to chill the compressed air etc means more expensive + especially the multi stage emissions controls for on road diesel engines + DPF to filter out PM & ongoing fluid additions of DEF to scrub NOX to comply with Euro 5 and EPA clean air regulations / that means VW emissions cheat in the market capitalization sense + hybrid gasoline vehicles, means that TDI sales declines ongoing, even though in principle the Turbo Diesel Direct Injection engine idea great for 1st and 2nd and 3rd and 4th generation biofuels and even DME or dimethyl either fuel works perfectly sorta like propane, as a diesel engine fuel, in steel tanks like propane as a compressed gas liquid injected common rail or direct injected :)
You don't need fuel. If you have enough air and hit it hard enough it'll still go. Air itself is combustible.
of course it is... ;)
Make ultra thick tube prevent break
How much compression is needed to achieve ignition?
I wish I knew the exact pressure I should have measured it
@@WarpedYT You could try to estimate based on the compression ratio.
3:20 💥
Diesel is combustible, not flammable. I think that's why those tube's kept popping
too much pressure for sure
4:32 technically it's thick air, compressed air
Lol yes 😊
99% Alcohol should give you a slower burn with less energy to not blow the tubes up
Those are some cursed AI pictures lol
Lol
Not as bad as Mr beast's lol. Why cursed tho ?
@@WarpedYT I don't watch mr beast so I can't compare but the idea of a heptaoxygen molecule (1:37) with 7 oxygens bonded together is (as far as I know) purely hypothetical and only possible at ranges of hundreds of gigapascals (15 million + PSI) in a metallic phase possibly found in some exotic gas giants or something like that
its call fire piston in you call.
but im call gobek api.
im claim this Technology coming from my coutry asian Indonesia. before born diesel.YES. DONE CLAIM.
yes that is what the history books say, I show your country in the video
Wonder if these would fit in a Mercedes 🤔
Why would pyrolysis release H2 gas?
I was taking a guess but I honestly can't remember off the top of my head which gases are released from cotton through pyrolysis I thought hydrogen was one of them
decomposition of methane
Hydrogen (H2) is generated during pyrolysis due to the thermal decomposition of organic materials. This occurs for several reasons:
1. Molecular breakdown: When organic materials are heated, molecules break down into simpler components, releasing hydrogen atoms.
2. Water vapor reforming: Water vapor present in the material or produced during pyrolysis reacts with released carbon, forming hydrogen and carbon monoxide.
3. Dehydrogenation: Organic compounds lose hydrogen when heated, releasing H2 molecules.
(Source: META AI)
Pyrolysis releases H2 gas, but the charred cloth shouldn't have any Hydrogen left so no pyrolysis there.
Char cloth is made of cellulose, which in fact is not only a carbon containing molecule, it also hold other atoms such as oxygen and Hydrogen. There are many sites on the molecule that contain Hydrogen. The relatively extreme change in temperature due to the ideal gas law, will cause the hydrogen atoms to become dissociated from their parent molecule. Then when pressure decreases the hydrogen atoms will be immediately seeking to fill it's s orbital. The easiest way to do that is by making the diatomic molecule H2
Brony
🤔Diesel is somewhat compressible to a certain point once you reach that point then it exploded the tube
It doesn't matter if the diesel is compressible or not, that's a misconception. In this case there is a huge amount of air in the tube that is being compressed. It's the same as if there was no diesel in there and a solid bottom because the air is inside the tube being compressed at all times.
Great video!!!
Thank you, not so bad yourself!
You could put one drop of diesel in that tube and still get an explosion! When you consider how little fuel gets injected in the average modern diesel to achieve combustion, you're essentially flooding that tube with diesel. WD-40 is pretty close to what you would need if you want some sort of vaporization. We always used that when we were building potato guns as kids.😄👍👍
I think you're absolutely right, I don't remember personally how much lighter fluid I put in the potato gun
Quick half second squirt of hairspray did it for us, years ago.
Old trick i learned from a farmer and used to do with my spring airgun, to get more out of it, was to add a drop of gun oil in the skirt of the pellets before every shot. Every time it ignited i could hear the classic sound of cracking the sound barrier and the shot would go further. It also absolutely shredded the o-rings in the chamber, plunger and sealing faces.
That's really interesting and after doing this experiment I can totally see how that would work, that's crazy
Petroleum jelly works too, it's a lot of fun
Dude i conected a new path on the brain thanks for that. So many memories putting oíl on my air gun 😂😂 poor orings
That 1 sqr inch piston had me thinking "Hey Phineas Gage, stop hitting that rod with a hammer!" -- Thx for another great video
He lived.
@@nathanieljames7462 They both did, I'm glad one much luckier than the other. Cheers Nathaniel!
This highlights why the injection timing is critical. Rudolf Diesel learned that the hard way when one of his engine prototypes exploeded, nearly killing him.
You're right, I do remember reading that somewhere.
@@WarpedYT If you'd liek to thest this theory against the hydrolock theroy I have seen in other comments, di ti with a little acetylene gas, instead of liquid fuel like diesel. Acetylene is very well suited to compression ignition, and has been used as a not solvating starting fuel, for diesel engines, in place of ether.
👍👍
The char cloth is nearly pure carbon. When it burns, the O2 gas becomes CO2, resulting in the same amount of gas, but hotter. Burning a HYDROcarbon fuel (like diesel) you have not just O2 -> CO2, but also O2 -> 2 H2O. You get 2 molecules of gas for every O2 instead of 1. So, it would be getting WAY more pressure spike with the diesel than with char cloth, even if the energy per KG of fuel is equivalent.
And.. If you increase the heat and the pressure , you will producing NOx ....😉
It looks like you added a LOT of fuel in there. I wonder how much is used in a single ignition cycle in a diesel engine where volume is much larger.
more diesel content please
I have been waiting for a video of this for a long time, thank you :-)
Just way too much pressure
4:23 even had turbo surge like a diesel engine 😂
It definitely had some weird surge going on.... I was wondering what caused that
Isn't it somewhat similar to what those 4cm pistol shrimp do? They create cavitation bubbles that reach 4000ºC. Almost as hot as the sun surface.
Love the video and love the necklace bro
Thank you
I don't think I've ever seen a video by you that wasn't interesting! I like to learn new stuff and see someone try the things I've once or twice have wondered myself.
Every time the tube exploded I just started laughing
I love your contents.
Makes me wonder, how do they adjust the ignition timing on a diesel engine? It seems like mere compression ignition would be too inconsistent. Also, how do they stop the engine, cut off the fuel? I've seen videos of run away diesels where they have no way to shut them off.
He is just struggling way too much with his fire piston, I have used one before and it would ignite every single time.
A diesel doesn't run away because of timing issues. If the fuel is removed from the combustion equation the equation fails.
Diesel timing is determined by when the fuel is injected into the chamber, in older diesels you could rotate the pump exactly like you would rotate a distributor on a older petrol engine.
A runaway diesel is running on its own engine oil, most commonly its from turbo seals that leak or blow out and the oil from the turbo is sucked into the intake and burned as fuel. You need to starve the engine of air to stop it from running away.
@@derekjooste9339 Thanks for the explanation.
@MrTarfu sure pal.
I think you used too much diesel.
I know
Could you mention the pressures in bar as well pls? It would make it easily understandable for a lot of people!
Otherwise that's such an educational video which could be used in so many classrooms- brilliantly done!
Suggestion for the tube: Have a stronger one, maybe with increasingly thick walls towards the bottom?
I will next time for sure
@@WarpedYT Thanks.
As I said, great video.
I can just point people there now if I want to explain anyone how a diesel engine works.
Where would we be without Rudolph....!
cant you convert?
1bar is close enough to 1 kgcm2 is close enough to 15 psi to be relatively simple, i thought... 60 psi is 4:1 CR, or about 4bar, or about 4kgcm2... 120 psi is 8:1... 240 is 16:1...
comeon, learn some basic arithmetic. education should be about thinking for yourself, not having everything laid out in front of you. its the thinking part that counts.
@@paradiselost9946 Why do all the maths?
Anyway, he responded very positively already and I think it's sorted.
@@demil3618 cant you count?
Man in Indonesia used this to make fire he used wood for the cylinder and piston too
The A.I. pics are just gawd zamn
why is he using AI?
Cheap and quick
@@Emilijano249 I like the older style ngl it felt like he put genuine effort into it and really drew me in
@@Old_Gunslinger_Wild_Bill that's still my style but I just didn't have a good thumbnail for this one, as for the video this is a precursor video to the full episode, You will see what I mean soon. But I am rolling out my new strategy now I'm doing full episodes and then episodes like this. I'm just getting back into the game and sort of re-familiarizing myself with my workflow. I'm making big changes and trying to slide into it.
@@Emilijano249 I don't think anything is cheap and quick when it comes to these videos. It's just something I'm trying out right now, but this is not straight AI, I made the photo but some of the pieces are AI, normally I would have a good thumbnail but last couple of videos I've been slacking.
Awesome images
thank you
Love your necklace!
Thank you 🦄
Very cool video. Thanks for posting!
Glad you enjoyed it!
The lower the piston is when you hit it the less compression you get. No wonder it had to be hit so many times to work... ;)
One of my survival gear fire starting methods is a small fire piston.
The problem with your experiment here is simple! The clear GLASS tube you are using for the cylinder... is made from the WRONG MATERIAL! Try using a more shatter resistant, clear material! Like maybe bulletproof glass! To more closely duplicate a cylinder made of the same hardness as that of metal. To simulate the wall thickness of a metallic block! Maybe use a chunk of appropriately strong clear plastic with a sufficiently smooth hole machined in it. Good luck! 😊
It looks pretty easy to make your own engine
For the most part I think it is, it's like everything else it's just the fine tuning is very difficult.
There are several differences between diesel and char cloth. I don't think the total combustible energy is relevant for your explosion result.
One big factor is surface area. Pre-combustion the diesel is in vapor form, perfectly mixed with the air. So every tiny diesel droplet can burn at the same time. For the cloth it takes 1-2 seconds until the fire burned to the core of the strings.
Another factor is combustion products. char cloth is mainly carbon, only producing CO2. Diesel is a hydrocarbon producing water vapor (H2O) and CO2.
I have a fire piston because I like primitive fire starting techniques and apparently I'm a masochist because it's NOT easy to use.
Maybe you can try heating diesel to its Flashpoint which is something like 65°C or something. That Will allow it to be in a more volatile state and require less mechanical pressure from your hammer. Maybe... (I'm no expert)
And thank you for all your really interesting and educational content!
Hey Matt, I was wondering (since you have a few mini jet engines) if you could modify one into a high bypass turbofan and get more thrust vs the stock design? It would be a cool project, and maybe Garrett over at Cleetus McFarland could trial it in flight. Maybe a collaboration to fund the project. I think the world's smallest high bypass jet engine world get some attention.
Also try with gasoline. Gasoline is more volatile, it turns into vapor easier than diesel, but has higher auto ignition temperature than diesel. 534f vs 410f.
Should require more compression to ignite gasoline and it would produce a bigger bang because it burns faster after it is ignited.
People have the wrong impression that diesel can take more compression, but that is false because in a diesel engine fuel isn't pre-mixed with air. It burns instantly when injected. Gasoline engine have fuel pre-mixed, so it needs to worry about premature (auto) ignition more.
Gasoline in a diesel cycle engine would need even higher compression ratios and would be blowing pistons and heads because faster release of energy.
Try less diesel more vapor for the next one, the heat will vaporize the diesel and it should combust, hopefully in the first smack
I had a good example of dieseling while playing with a pellet gun, we blocked the end of the barrel with one pellet and loaded a second pellet normally. When friring the oil in the barrel combusted and made a loud explosion.
Its called 'Gobek Api' come in south east.... founded about 18 century
It's basically about reaching criticality. You not only want the fuel, air and pressure to be just right, but also to come up to the ignition point faster than it can absorb the energy. A piece of loose cotton would serve much better this demonstration. Anything more, and it's just too powerful and too hard to ignite, as it involves more mass.
Matt, i didn't know if you had a slightly hollowed out piston, or flat at the end, but that may help a little bit with the end result of returning the piston instead of explosion?
The other thought i would have had is trying a thicker material for the outer housing... But I'm sure that was a thought, but not able to get the material in a different wall thickness.
The tests with the diesel were experiencing pre ignition, this is a great visualization of how dangerous preignition is to internal combustion engines.
Edit: i also think the compression ratio was too high, might have something to do with the pre ignition
Too much diesel. Only use 1 drop from a pipette or eyedropper. Great burn and detonation see throughs.❤
The pyrolysis created not hydrogen but some atomized or vaporized carbon.
The distance of the piston to the hrad at TDC at the sectioned diesel engine is crazy small compared to gasoline engines.
Could have done without the inaccurate AI images.
Yeah, that O⁷ got me laughing...
@@IceBergGeo not a fan of AI images either. i generally tend to report anything with AI images, followed by do not recommend. to my way of thinking, AI images are a form of child abuse. i can handle fantasy but when theres no disclaimer, and small children have no experience or wisdom to rely upon, yet are exposed to such nonsense... we all know
'peter pan" or "where the wild things are" is fantasy, story books...
but to have "educational" material intermixed with fantasy is simply not right in my mind. filling heads with BS.
can have 04 though... oxozone/tetraoxygen...
explosion + liquid = nowhere to go
That's why your tubes blew up, hydrolock.
pruebalo con aceite de cocina y con aceite de motor
This video is the perfect example for diesel torque