The slow motion of the single port injector reminds me of fire breathers. They're doing the same basic thing, spraying the fuel until it atomizes enough to get to the right fuel/air mixture and ignites.

i hope you plan on making another video on the different type of fuel injectors… like from the books you showed us, how diesel compression was different than others.

I just want to say thank you, Destin, and everyone who supports this channel financially. I don't have the extra money to help out, but the attention to extraneous detail is very much appreciated in a world that seems increasingly like everything is turning to easily digestible, CliffsNotes-style explanations. From the topics themselves, to Destin going to farms and such and getting his hands dirty to give us simulated hands-on experience, to the videos of the complexities of the space flight equipment that I'll never use, lol, this channel is a shining city upon a hill. Keep up the great work, and good luck!

Re: #3 - I'm subscribed, but somehow the UKposts algorithm changed my notifications from "all" to "personalized" and I didn't get an alert for this video. Fortunately, the email list came through!

Maybe your hair is too short. :P

I was thinking the exact same thing

Quality after market parts are so needed. 💯

What an awesome way to make a living !

DIY Mechanic’s Matter!

Something most people can get behind whatever their politics.

great summary of his channel

I hope his new manufacturing business has something to do with rockets!

And I knew anything about any of those things neither even "care" about that much and yet... here I am devouring videos. Destin is gold !

His dad was one of the Saturn 5 engineers... what do you expect? he is a genius.

@@mickeyfilmer5551 And all the way up to JWST.

get your money back, none of those injectors fired correctly.

Where did you get it? You’re an engineer? I’ve never heard of getting a phd in engines.

🔫

"PhD in internal combustion engines" doesn't even sound real.

I may be wrong, but getting a PhD is about presenting a thesis, not about being part of the research team of a well-stablished initiative or aiding someone in presenting theirs; And if that's the case, you can be a PhD in anything so long as your thesis is accepted.

It's even harder to explain HEUI injection

@@caterpillarslim1288 why is it hard? It‘s just an electromagnetic valve.

@@Phrew its even harder to explain how a 2 stroke engines bottom end is lubricated... they use the fuel to lubricate the bearings lol

I love when I see other UKpostsrs that I watch comment on other videos I watch.

@@Phrew c’mon, that’s a little misleading. I mean there is more to the system and its function than a solenoid, right?

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With 50 year old diesel tech? 😂😂😂 right.

Yeah, there is not enough ‘writing it down’ for this to be science and not mucking about.

Nice

Nice

darun

nice

Nice

Linguists call this code switching in case you want to learn more about it :)

@@kyleeverly9243 I find myself doing this when I visit home state. Or when I meet people from my neck of the woods.

@@ElizabethSwims Me too. Weird, right? I come back and everybody asks me why i'm talking like a redneck lol.. I don't do it on purpose. Just seems to happen.

My friend has a really strong code switch when he talks to his family. We live in Australia but he was born in England and his family moved here when he was young. He has an Australian accent normally but anytime he speaks to his family he instantly swaps to a strong English accent, it's pretty funny.

@@ElizabethSwims same.

POV - joint at a hippy festival

That's something best experienced in slomo.

Yes, it looks like his mind rapidly went "oops, glad I used safety goggles but if that thing would have caused any bigger fireball, I'd be missing some of my hair nonetheless".

Put the captions on. It says, ".....". lol

"It was at that moment he knew... He done F'd up" or "If I go home with no eyebrows, my wife is gonna kill me"

Safety squints.

Most random antvenom spotting

Wow its AntVenom, its feels like a cool crossover

that's litterally how ww1 flame throwers work. You don't actually get burned by the fire, you get burned by the burning fuel that squirts out like a water gun.

@@supertornadogun1690 fr lmao

today you watched a guy burn some fuel.

Yeah, at home is definitely not safe, but at work, heck yeah! 😂

recently changed my major to engineering based on legends like destin and mark robber

That's right, do it at work on the clock! Okay realistically I've had to do a spray-pattern test like twice in 10 years, but it's still fun with the old testers!

Did you go to college to become an engineer before you were a mechanic?

Thanks for saying kind things!

@@smartereveryday I would love to know what those 2 books you referenced were, being in the automotive field I’m always looking to Learn new things. Any help would be greatly appreciated!

Fuel injector flame thrower when?

woah

It probably helps when the thing you're filming produces it's own light XD Half the difficulty to slow mo shooting is that each frame of video has so little time to collect light that things either need to be really well lit, or end up looking darker, or the shutter speed is adjusted for more light but blurrier images.

you just made a certain pair of guys sad, slowly sad :)

As a robot i find this video extreme attractive

Not saying these shots aren’t fantastic, but I’d highly suggest you check out The Slo Mo Guys if you like that kind of high quality slo mo!

The thing that was boggling my mind througoutthe video is that there is no air inlet for air on the injection system... this pressurized air you talk about, where does it come from?

@@jakubstanicek6726what do you mean there is no air inlet. You mean like a carb pulls air and full in with the pistons upstroke? It’s not like that with a fuel injection?

@@Duality333 I mean, when he is spraying with the injector in the video, a 100% fuel goes through the fuel injector and the oxygen comes from the air around. If you spray into the combustion chamber instead, you need a way to prefill it with fresh air everytime before injection.

@@jakubstanicek6726 there’s something called the induction stroke mate, think you need to look up how an engine works

@@LR90_200TDI Yeah thats clear when you have a carburator, I was just not sure how that works with injection. So only air is pulled in, and the fuel is injected after that?

He has such child-like wonder about the world and human engineering

The only difference between an adult and a child is the price of toys ;)

i get that feeling when going to different construction sites and we get to see and test other workers' tools, or learned how they work on their own specialty, we look like kids with new toys

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Yes, BIG thank you for that!!

big up for letting everyone keep up

Yes, ask UKpostsrs who hi the extra length of putting accurate captions are underrated and those are the ones I usually support first on Patreon.

Just wanted to clarify that I meant "all UKpostsrs who go the extra length". My glide typing habit makes me type fast but can lead to inaccuracies sometimes.

Agreed, definitely one of the best videos on the topic.

Agreed! I already knew how it all went, and worked, been working on small engines for years. But seeing it all in action was fantastic! Visualizing it that way was the best way I've ever seen it explained. It took me a long time to wrap my head around it, when I first learned

was a particular highlight

the ASI and Destin should do a video together. It would be almost certainly be interesting.

Aircraft have been fuel injected for well over a century now, long before it became common in automotive use, and it's kind of rare to find carbureted GA aircraft with more than 180HP. EFI and FADEC is probably what you're thinking of.

​@@Skinflaps_Meatslapper carbureted aircraft are still relatively common in the wider GA fleet

@@Skinflaps_MeatslapperIsn’t the reason for that because a fuel injected engine can work perfectly upside down or in any angle?

@@AirSafetyInstitute Yeah, below 180HP, as I said. Above that point it's uncommon to see a carb.

15:20 looks like a donut... awesome 🙂.

I wonder if the airflow would cause enough fumes to form and be ignitable around the flow 🤔🤔

Gasoline is INCREDIBLY volatile. It'd start to evaporate on the way down and the fumes would easily catch on fire. The liquid isn't ever what ignites. It's the vapor coming off of it. It's why you never use gasoline as a fire starter. If you wait more than a couple minutes, you have a massive cloud of gasoline vapor that's literally ready to explode once lit.

@Hero to his point. I guess laminar flow would best increase the chances of minimal gas build up given minimal surface area. So it would light. But I guess it would be the hardest to light of the flow patterns. Maybe. I've never done the test, just guessing

@@ivanbarreras9445 It'd still be flowing past a lot of unsaturated air so the gas would naturally kind of want to fill it. The BEST case open air scenario is a deep container with no air flow over it. Gas vapor is heavier than air so it'll mostly sink and should somewhat stay contained without airflow disturbing it and allowing more to evaporate. Still, gasoline is probably the most volatile liquid I know of other than maybe alcohol. Any gasoline left in open air isn't gonna be great news. But yes, the smaller the surface area, the slower it'll evaporate. So laminar would definitely be best

gasoline liquid never burns, it's always just the vapors that burn. so in a laminar flow condition it would still just engulf the liquid with flame and would likely disturb the flow at some point. would be interesting to see though.

Hello Mr Scratches at a level 6, with deeper groves at level 7.

Use these nozzles for your burn tests

I don't trust you, You Rig Everything!

Let's get started 🤣🤣

Just imagine how cramped all of that would be in a single cylinder! 🤯

What's the flow rate of one of them 100,000 hp cargo ship engines?

This would be so cool!

I'd also like to know!

Those are a set called "How Things Work" and there are at least four volumes in the set. They are credited to illustrator Roger Jean Segalat and originally published by Edito-Service SA, Geneva but released in the USA by Simon + Schuster, and George Allen & Unwin in England. How do I know? Because my dad gave me a set when I was younger and I have them in my hands right now. They're wonderful!

@@HermanVonPetri Thanks!

@@HermanVonPetri thanks so much!!

@@HermanVonPetri You deserve the best-answered-question-of-a-youtube-comment-award of this year.

Most 2S carbs really aren't any different from 4S carbs, generally it's just a matter of re-jetting to make them work in either. The reeds are where they differ, that's not part of the actual carb but rather the intake itself.

do you have a link to a picture of one of these carbs?

@@Skinflaps_Meatslapper Yes, I know the venturi system is the same, what fascinates me is the complexity of the passages inside the carbs I guess.

@@DavidBergmanViolinist So, you're saying that just any carb would work then? Because a 40mm Mikuni carb works just as well on a 4 stroke motorcycle as it does on a 2 stroke quad. In some cases, only a few adjustments need to be made to the needle position and idle jet...there is no physical difference between them. I'm still fascinated that the tiny carbs on weedeaters and chainsaws work as well as they do, even though they're so much more simplified in their operation compared to something found on a dirtbike or a car...they're still doing the same exact thing with a fraction of the complexity at whatever angle you want to run them at. What you might be more interested in is the old pressure carbs that they used on WWII aircraft, those were extremely complex with a multitude of passageways, bellows, chambers, and various metering systems all working as one to deliver the right amount of fuel at the right time. They're complex enough that only one or two companies in the US are capable of properly overhauling them these days.

Good old Bosch VE and Cummins P pump.