How Fuel Injectors Work
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- Опубліковано 3 чер 2018
- Here's how automotive fuel injectors work to distribute fuel into a car's engine.
Fuel injected vehicles have been around for the past 3 decades, largely replacing carburetor fuel injection. Fuel is injected into the air stream leading up to the cylinder (or in the cylinder itself) as opposed to being mixed in the barrel style carburetor upstream, and then getting sucked in as a air/fuel mixture.
Fuel injection allows an engine control computer to accurately measure how much fuel enters each individual cylinder, as opposed to controlling how much rich air enters all cylinders. It also can be scaled back for better fuel economy, or inject more for power, or skipped altogether for cylinder deactivation.
Today there are two types of fuel injection: port injected and direct injected engines. Port injection engines situate the fuel injector in the air intake so it mixes with the incoming air stream before the cylinder head valves. The rich air stream is then sucked into the combustion chamber and is controlled by the intake valve.
Direct injection engines situate the fuel injector inside the cylinder head itself, pointing into the combustion chamber. This allows fuel to mix inside the cylinder on its expansion and compression stroke.
In this video, a port injected engine is taken apart and the fuel system is examined, from the fuel rail, to the injectors, head and combustion chamber. A fuel injector is cut apart and examined, demonstrating the coil, plug connector, as well as the pintle valve and spray head.
The advantages of direct injection vs port injection are discussed, which includes better emissions, fuel economy and mixing. A demonstration on carbon buildup is also presented, with many modern engines offering both port and fuel injected engines to mitigate this issue, such as in Toyota's D4S system.
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Excellent - I love how you demystify these things without becoming either too theoretical or too specific. Thanks!
That's my style
This guy deserves way more subscribers, great video as usual.
عمرو مصطفي الواد دا انا بعشقه❤❤❤
I sure hope so
Subscribed,
How many did he have when you made this comment? He's at 280k now
As always, precise, detailed and full of info. Hats off to you man.
Thanks
This is a fantastic channel, I'm amazed how informative it is. Instant subscribe
Dude, you could REALLY be a teacher. Did anyone ever tell you that? You have an amazing gift of not just explaining things clearly (and calmly!!!) but you express yourself extremely well.
It’s called editing…
Very interesting and a clear explanation. I'm glad I'm not the only one giving a second life to used underpants.
Maketsu haha. 2:29
Haha, it's the best for dirty situations
I just cant believe the engineering behind this. It happens multiple times a second and it is still nearly perfectly controlled. Just amazing.
Oğuzhan Yılmazer. That goes to show how complicated an engine is. That's the same speed the pistons are moving times two for any four stroke engine. Yet an engine can go for 400,000 miles and more before any major repairs. Amazing!
Exactly what I'm thinking while I drive...
i trip out on how optimal engines are aswell
When I googled this exact question I was expecting someone to just show the fuel injector itself and vaguely talk about it and not show what I was interested in which is _where_ the fuel is injected into the engine. I am quite fortunate to have found such an in-depth video that showed me everything I wanted to know and even some that I didn't know I wanted to know like the inside of the injectors. This combined with some good humor made for a very good video. RIP your brother lol
Currently becoming certified as a red seal ( UA-cam) mechanic thanks to you!
Glad to hear haha
What a poor abused brother 😅
Haha
What he doesn't know won't hurt
I think he doesn't wear underwear. 😂🤣😃
I’d like to see a photo of your brother smiling after he has brushed his teeth ;-)
Tx for a excellent video!
Eww
He doesn't brush hence my supply
My Q-tips are also for DIY use only.
Another great vid. Thanks for educating us man!
Your welcome
That was great, I been looking for a precise video of how they work, that's the one I needed. Thanks again for the good work.
I really appreciate the hands on teardowns companied with the classroom style diagrams and lessons. Also, props to the color appropriate toothbrush selection based on subject content!
Wonderful presentation. Thanks.
I like the raw old school style of explanation. Keep it up.
Dude! This is an outstanding video! Thank you so much for all your hard work and going so in-depth, I loved hearing all this information!
Thanks
So glad this video was recommended, really clean, nicely presented information. Subbed!
Awesome videos as usual man.!! BRAVO.!!!!
This is best youtube channel I've ever discovered, please continue to making these very clear and informative videos, your wittiness adds the cherry on the top
it finally makes sense... best explanation i've seen of how exactly the injector works. most of the other things i read just said "it atomizes the fuel" but i could never find exactly how the fuel is shut on and off. the solenoid with a fail-close port is a genius way of doing it
Yes. It's hard to cut that injector apart with an angle grinder but worth seeing
Awesome breakdown and overview. Thank you!
Excellent hands on explanation!
You deserve way more subs, keep going youll make it one day, i love how u actually show the parts and explain also
Such a thorough explanation and extra, love your work
Thanks!
Awesome video. I had been wondering for some time how fuel injectors look and how they work.
One of the best layman's term description and tutorial I've seen. Well done.
Thank you
Holy crap...that has to be one of the best, informative, clear videos I've seen in quite some time. Good damn job young guy. Keep it up. Got thumbs up and subscribed.
You are welcome
Excellent demo with clear explanation for any layman to understaand.
Thanks for showing mechanical engineer how is it done! Blessed u
Great explanation and excellent video!
Thanks
Just changed these on my 91' Accord today, great explanation man
Thanks
You've got a classic there
Always great video coming from you sir, thank you very much. Don't know exactly how you do it but your video, compare to others I've watched so far is that you manage to keep the viewer "hooked" in the topic and never a sleep-inducing moment; and a little bit of humor gets thrown in for good measure.
Thanks, that's my style, keeping simple and short
It's all because of the tooth brush...
This was an amazingly informative video. Thanks!
Believe it or not, It's stuff like this that really helps a car guy to understand their vehicle and what may possibly be going wrong or right in certain situations. If you know how something works down to the individual parts... You can formulate scenarios in yer head!
That's very true, I'd rather understand something completely before diagnosing an issue
Pretty rad stuff! I wish I had access to old parts to take apart as frequently as you do. I've only done three of those videos now.
Buy a full car and take it apart slowly
Haha Well, that would do it!
Very informative. Thank you!
I absolutely love your videos and the ever-present toothbrush is amazing too!!!
Fantastic description
Im a new subscriber, and I have to tell you that I love your videos. Great explanation, clear, and to the point. Educational without showing beers, nor profanities. Professional. Keep them coming bro. Were you a dentist in your other life?
I am glad you found my channel helpful. Feel free to check out my other videos. Thanks
Your videos are great, these breakdowns are awesome!
Your welcome
Amazing video! Good job!
excellent explanation.
this was so thorough! thanks m8!
The fact that you rigged your own water pump to demonstrate how the injectors work is brilliance. Thank you.
your welcome
You did a great teaching job dude.
Thank you for the video
Great video, as always.
Good demonstration.
Thank you
one of the best videos ive seen.
Nice video man, thanks for all detailed info
You are welcome
Very nice video! Just came across the video and I am very impressed with the quality. Keep it up man! Congrats
Thanks
Thank you ! I needed to see the insides...
You’re welcome 😊
great! super video ,well explined
Great explanation and visuals!
Thanks
Killer video. Concise. Very well spoken. (And quickly!) Great visual aids. Best on the Internet! The presenter again shows, he really knows his stuff!
As usual you are unique , detailed and informative , thank you my friend
Very clear, very detailed and very good. Thanks.
Thanks!
Fantastic Video. Clear, precise and great delivery with bonus of the toothbrush and chonies laugh.
I'm a mechanical engineering student, This video was so informative as your all videos
Thanks and all the best on your studies. I'm a mechanical engineer too
Another wonderful video!
Thanks
Thaks man
Great video, thank you for sharing
No problem. Thanks
thank you sir
When are you going to show your brother to us? :)
Hahaha he's camera shy just like me. But if you see a few other videos his hands have made an appearance helping me out
Good info thanks
Im glad i found this channel
Thanks. Lots more to come!
Very well done Speedy! I didn't know the GS had both types of injectors. Are there actually 2 injectors per cylinder?
Every video is very interesting
Tanks for sharing
Thank you :)
Thank you guys This has helped me a lot
Glad it helped!
Nice job speedkar99!
Very educational
Thanks
Thanks Great Video
Excellent 👍
keep it up mah man...!!
Thanks for the feedback 🤣
Fantastic videos ! Greetings from Italy
Thanks. Wow so far!
Excellent.
man you having deeeep knowledge 👍👌
I don't know much, but I try to present what I understand
@@speedkar99 come on man, you're totally thorough and I doubt there is anyone out there as able as you at explaining this stuff so quickly.
Informative and brother fun part included as always ;)
Always taking advantage of being the eldest sibling
I liked the cross section of injector. Thank you ! Great video. that means at high pressure, injector will not open. about 100 it starts to sufficate and 130 psi it cannot open at all, yey.
Glad you enjoyed my explaination
Best explain 👍👍
Thanks man :)
U r my hero man❤❤❤
Thanks 😚
As always very impressed video
Your welcome
Wow, excellent video.
Thank you
Great video bro ! I didnt know about direct and port injections thanks
Glad you took away something!
Nice video
Made my day :)
First time watching any of your videos and it will not be the last time. Thanks for the information and I like the high tech animations and explanation you used. Lol. Great to see someone using g real items and doing things old school. 👍
I have a strange desire to go brush my teeth now.
This video promotes good hygiene
Do you use your brother tooth brush also?
Hells yeah I do!
10 thumbs up to this video. clear, to the point, with demonstrations and awesome diagrams
i'm amazed how many "professional" youtubers post videos with only a shot of someone talking who can't clearly describe what they are talking about, sometimes no diagrams or piss poor diagrams usually on a whiteboard, and often no actual video of the parts they are talking about. at first my complaint was that you were going too fast, but in reality this was the perfect speed and i'd much rather have this video than 20-30 minute slow video
Thanks for the feedback
Good work Colgate!!!
Eh
I'm sure they wouldn't be Happy
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You need some recognition
Love the tooth brush pointer!! ;-)
Brothers do come in handy!!
fab sir
Good, thanks 😁
You are welcome
You Rock!
Awesome