How an Automatic Transmission Works (Allison 1000)
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- Опубліковано 30 вер 2024
- This is a very detailed explanation on how the gears of this automatic transmission converts the rotation of the input to those 6 speeds and reverse, using 3D animation.
I didn't explain how the real clutches works so if you are interested on that watch the video on this link: • How multiplate clutche...
Here you can download the model for 3D printing: www.thingiverse...
Website: interlinkknigh...
Patreon: / interlinkknight
one of the best explanation about Automatic Transmission! thanks!
You're welcome
I was watching a f.ing bunch of videos to understand the automatic gearbox, and only yours is worked. Good job
Yeah, same happen to me. I watch so many videos and none was detailed enough to really understand how everything works. Was only after I finish the animation that I trully understood. Is nice to see that i helped. Cheers.
agreed
Awesome!!! Learned sooo much about them... thanks buddy...
I don't understand how the sun gear turns faster on P2 for gear 6 than it does for gear 5. Are you sure you got this right? Or should the configuration for gears 5 and 6 be switched?
@@dowskivisionmagicaloracle8593 maybe cuz the torque converter is locked?
Thanks for this explanation. I do think that it's not the planetary gearing that is difficult to understand but how hydraulic pressure is used to control the clutches and how this interacts with the planetary gear system. The structure of the clutch packs is also complex and worthy of a model.
This is one of the best most simplified animations on UA-cam!! You deserve more views! Still very very challenging to understand as you have to imagine multiple things working all together in a 3D multi-layed synergy. Its fascinating.
:) thanks
Well somebody put a lot of effort and I must say, it didn't go waste even a bit!.
Cheers.
Niiiiiice video!
Unbelievably comprehensive video of all! You are such a genius!
No thenkuy
Make a video on how the hydraulic is being controlled to switch gears
Yeah, me to, i want to know...
@Mr Sunshines By that logic, this transmission would be called a gear. It isnt a gear. it's a system of gears working together, as is the hydraulic control - a system of valves working together. if you think it is simple, search up a "valve body".
@Mr. Sunshine whats is wrong with you
@Hay Day You are stupid as f**
Awesome.. detail explanation with 3D drawing, very helpful. Thanks.
I don't understand how the sun gear turns faster on P2 for gear 6 than it does for gear 5. Are you sure you got this right? Or should the configuration for gears 5 and 6 be switched?
Extremely good animation and explanation. Well done. :)
Thanks for this. You were much more clear than that other automatic transmission video that has over a million views. I'll need to watch it again a few times. I also have a few webpages open that explain the math of planetary gears.
+Soylant I am happy you find it helpful.
I agree that there are many videos explaining how automatic transmission works, but they all skip the part on how all those gears actually create all those ratios (power-flow).
I didn't go about the math of planetary gears because I didn't want to be too confusing, when already kinda is.
Good luck
I run CNC shaper machines that make these gears. So.......................................................................... I am pretty much the coolest guy in here. 😎😆
I'll probably have to watch this two or three times before I get all of, but I know that I will get all of what I need to know from this video. Absolutely excellent use of animation.
Definitely the best video on automatic transmissions online. The first that really helped me understand!
What kind of genius can come up with all of this? The Buick Roadmaster was the first ever car to have an automatic transmission right? That was in the '40s, really impressive.
#interlinkknight i understand how the internals of an automated gearbox works, you've explained it perfectly, but how exactly does pressing the accelerator transform into shifting gears?
+adrian ionut On the bottom of the transmission there are a set of valves and solenoids that are controlled by a computer that "decide" what gear to put base on the speed of the car, speed of the engine and position of the pedal.
InterlinkKnight Ohh, I thought it was mechanically automatic... I was like what's so special about planetary gears that does that? Now I know that it's just a computer.
I don't understand how the sun gear turns faster on P2 for gear 6 than it does for gear 5. Are you sure you got this right? Or should the configuration for gears 5 and 6 be switched?
@@dowskivisionmagicaloracle8593 Let me try. In gear 5 and 6, the sun gears turn freely and the planetary gears drive the sun gear. For gear 5 and 6, the output to P3 is the sun gear, not the carrier, and that`s why things change a little. In both cases, the faster the sun gear turns, the faster the final output will be. Imagine that the planetary gears and ring gear are turning at the same speed (like a 4th gear). In this case, the sun gear will spin with the same velocity as the other 2 gears, right? Now imagine that the ring gear is a little bit slower than the planetary gears. In this case, the sun gear need to spin a little bit faster (in relation to the ring gear, since the planetary gears have the same velocity as before) and that`s what happens. Before, the planetary gears were not spinning, just turning. If the ring gets slower, but the planetary gears don`t, they have to start spinning. The bigger the difference in the speed between the ring gear and the planetary gears, the faster the planetary will spin and the faster the sun gear will rotate. In gear 5, since the P2 ring is also rotating in the same direction, the relative velocity between the ring and planetary gears is not that great. In gear 6, the ring is stationary, so the difference between the speeds are bigger...
A CVT's easier to understand 😅
Thank you sir, I have a question.
9:13 Applying C5 will only prevent the planet gears of P2 from turning. They can still spin.
Since the planetary carrier of P1 is connected to the ring gear of P2, I wonder if the motion of P1 will pass to P2 through that path, making the planet gears of P2 to spin, resulting a reverse gear instead of a neutral one. Please correct me if I am wrong :(
The gears are still going to move with the wheels, but they are still considered in neutral because the engine and the wheels are not connected
@@interlinkknight Do you mean there are somethings that intercept the power transmission from the P3 carrier to the output shaft during the neutral gear?
No, but the gears are free to move . A little of friction from the gears might be transmitted to the output but it's so little that it is not relevant
bro , you just make way easier , this the best explanation ever
This is by far one of if not the best explanation for understanding Automatic transmissions. Thank you!
Does the system just lock up if you engage other ring gear combinations such as C2+C5, C3+C4, C4+C5, or triple or some combos?
By far the best explanation I found regarding automatic transmission, but I think I need to watch a few more time to grasp it. Thanks
The best explanation yet...got it! 👍
This isn't rocket science. Unless it's in an Oldsmobile...
Compared to other video, this video made me understand better on how automatic transmission works
No mames guey...
after like a dozen videos about automatic transmission, FINALY I GET IT! THANK YOU! you got a like and a new subscriber!
This explanation is similar to how Lesics also known as Learn Engineering discovered it.
Also this is not the number of planet gears per carrier in a real transmission, it actually uses 3 planet gears instead of 4 per carrier in a real transmission.
no difference in the functioning between 3 planet gears and 4 planet gears . but it's have to be mentioned
2 nov 2019 11:39 am edt:thanks, i wonder how transmission look like during n/neutral with car descending a hill
Best video. I actually understand it. The one from Learn Engineering got lots of views but is terrible.
Wow this helped. Been wondering how it worked more or less. Have been watching videos that are too confusing. But this was great. Thanks
You make engineering look simple. Well done
Thank you, this was really helpful. I finally understood how automatic drive with planetary gearing works!
THANK YOU!
Thank you, very well presented. Ever since I had to have my auto transmission rebuilt I've been trying to understand how it works and this has been very useful. Manual transmissions are quite easy for a layman like me to understand but autos are more complex to get my head around.
Definitely the best BUT could go about half speed.
Well done. Thanks for producing.
Would applying C2 + C5 result in a 7th gear ratio?
Applying C2 and C5 would block the input. C5 clutch would not allow C2 to move
Really strong Gboxs, used in loaders and trucks.
simply perfect
I must agree with Soylant - your explanation and animation present a genuine learning opportunity.
Brownie points earned for not claiming that this is an 'easy to understand' gearbox.
However, you did make the 'general concept' easy to understand, whilst at the same time providing the detail, that can be repeat watched.
In effect, you managed to kill two birds with one stone.
I could watch this one with my son (the benchmark)... whereas the 'learn engineering' vid was a complete fail, as witnessed by the comments (mine included).
I think I'll go back and edit my post to add a link to this vid and Thomas Schwenke 's vid (describing a simpler setup).
+PlayF1 Net Thanks for your words. Is nice knowing my effort is useful for other people.
Absolutely best demo I have seen so far...
Wow. Thanks.
Superb explanation - well done !
you have done good job
Very nicely done, good video thanks man, good explanation and good animation.
better than what others have presented. thank you so much mate!!!! loved it
Can someone who knows the tautomatic transmission better answer to me: When I visualize it, it sounds like transmitting the power through all these gears wastes lots more energy compared to gear-wise much simplier manual transmission. Am I correct?
Very Well put together. The illustration was very educational, and Interesting. I enjoyed it, and I learned something I never knew before.
I am glad i could help.
Cheers
hi. realy helpful and thank you very much for the video. which software did you use to create this animation. i need to create an educational video for children to promote disability awareness. it will be a great help. thank you
Blender
I hope it was helpful
Yes, yes it was thx u
:)
this is the most helpful autogear tutorial goo job brother
Excellent explanation, btw you explained it better than some channels that have millions of subscribers. I have one question concerning the parking pawl, I always shift the gear when at full stop to neutral even if i'm leaving the car with the foot break fully pressed of course to avoid wearing of the parking pawl so is it right doing that ? Thanks
Thanks for your kind words.
I always follow whatever the owner's manual says, which in this case they always recommend putting the selector in "park" and apply the handbrake whenever you park your car. The parking pawl is made to be used and should last the life of the vehicle. Don't be afraid of wearing that.
This is old, but no it doesn't. I have thrown old Ford and GM transmissions into park while moving at speed, and could hear the pawl grinding itself down, and that still didn't do enough to destroy it when I opened it up to inspect. That is one part I have never had to replace on a rebuild and I haven't heard of anyone else having to either. My experience is primarily with rear wheel drive American brand transmissions though. Once it's engaged, it's engaged and not going anywhere.
it's like a sliding mesh but with smaller size and more complex. and have more frictions.
end result : smaller but needs more oil than synchromesh
धन्यवाद सर इस वीडियो के लिए इस वीडियो में आपने बहुत अच्छी तरीके से समझाया है
Inckchalla carbondila minute wyre dink nakajas...z174
That really explains everything! Now I need to know how these machines engage each of the clutches *on its own*
a computer with sensors
***** i read an article at HowStuffWorks. Yes, there are electrical sensors and it's common now. Before they exist, they have a mechanical air-pressure detecting system to detect if the engine works so hard, and detects which clutch gear is hold. If the certain pressure is reached, a valve opens automatically to pump air to make the clutch work, just like how you manually use brakes.
Wow I learnt so much starting from this video!
+FrostMonolith internet is awesome :)
thank you ..it is amazing and helpful
thanks,It's very helpful!
The best explanation... Thanks...
You're welcome
Thank you for making this video. It simply is not making helping people understand.
Excellent overview of the basic mechanics of an automatic transmission... Thanks
Beautiful, Amazing, Genius, Analysis of mechanism..... 👍 no more words to describe your efforts.... Thank you.... 😜
I finally could understand the idea with ur clear explanation, thx a lot
I'm glad I could help
Yaaah, it's needs greater concentration to understand it's functions.
Awesome mechanism, but how does the braking clutches go from disengaged to engaged? Thanks! Keep up the good work :)
On the description there is a link to a video showing how the clutches actually work. They use hydraulic pressure to move pistons that push the clutch plates together.
InterlinkKnight Oh, of course! thanks for replying!
é Power-Phull Aadmé untt AuRát SâHîB 👳 🔫 🔫 🔫 🔫 🔫 🔫 🔫 🔫 🔫 🔫 🔫 🔫 🔫 🔫 🔫
7:20 Movement@P3 for 5th gear
8:08 Movement@P3 for 6th gear
As far as I know, when planet carrier is output, It is under-drive if sun rotates faster than ring gear. But strangely these cases are over-drive? hmmmm..... who can help me understand?
The sun gear is also spinning and very fast so that creates the overdrive situation.
Far more easy to understand among other utube videos
Thanks 🙂
thank you very much for this wonderful video .Do you have another ones about how the torque convertor works together with the transmission
+salem ogla Not really. But would be cool. Maybe someday, but for now I don't have plans of making a torque converter video. Cheers.
I have to watch, then come back… watch again and again and again in order to understand transmissions
Best video I could find on automatic transmission. Keep it up
God bless your family youasked countries settlement
I love this. I have been trying to understand automatic transmissions for a while and this finally made it click.
Really Best 3D Education...
Awesome video. I'd love to see one about a Ravigneaux type automatic transmission.
8:19 Reverse; 9:11 Neutral
Either me is ultimetely stupid or the the video describe the idea really bad...
perfect video to understand auto gear
Thanks
Yours is the only explanation that worked. Thanks Man!
I'm glad
This is such a great video the only issue that I would see is that the transitions are extremely too quick not allowing for anyone to process the information that your providing. Also you are moving too fast from one concept to the other. The one Saving Grace is that I could Slow Down the video on UA-cam. But thank you thank you for taking the time I'm making this video my life is a lot more enriched.
good job. really easy to understand. thank you bro.
Best animation and illustration seen till now for explaining automatic transmission. You know, it will be even better if you show the same animation while taking a quarter section to show the ring gear movement before showing each section alone. It will make it more understandable. Appreciate your great effort in this video. 👏
Is there direct metal-to-metal contact of the torque-transmitting gear surfaces? Or, are they separated by a thin layer of tranny fluid? Why is there is hydraulic pump to up-pressure the tranny fluid?
There's fluid everywhere. The pump keep the fluid moving
I don't understand how the sun gear turns faster on P2 for gear 6 than it does for gear 5. Are you sure you got this right? Or should the configuration for gears 5 and 6 be switched?
I am sure it is right. Just watch the video carefully.
+InterlinkKnight No, seriously. If for gear 5 the ring gear and sun gear are turning at input speed for P2 whereas for gear 6 ONLY the sun gear is turning at input speed how can the result possibly be faster?
P2 on 6th gear:
- Ring static;
- Carrier spinning with the input;
- Sun gear going a lot faster than the input.
P2 but now in an alternative situation:
- Ring gear spinning with the input;
- Carrier spinning with the input;
- Sun gear going at the same speed as the input.
Can you fill the gap in between both situations?
What happens if the ring turns a little instead of a lot? Well, the sun gear would turn faster than the input but not as much as if the ring would be static.
possibly add a clutch between sun p2 and sun p3 , then engage c2 and c5? and what about c3 and c4?
If there was a P4 instead, would the sun hear of P4 also be connected to the sun gear of P3-P2, and the result would give you an eight-speed transmission? If so, does this continue to scale by two’s?
Additionally, is P1 special only because you want to gain reverse? If reverse was not desired, would you be able to simplify the design?
wow definitely I have to watch a number of times before I get it, but my question is once in neutral and at high speed when the vehicle is on, is it ok to go back to drive, or will the transmission get damaged?
As far I know it would not damage the transmission. I've done it and my transmission is fine
I think I will become a barber.
Great video its to bad that you explain it really fast
I think the explanation is very confusing and not very helpful. The use of some many notations and the non-stop repetition of them make it very hard to follow and understand
I invite you to make a better video
The problem with this and most other videos about automatic transmission is that they don't explain why this kind of planetary gear design is more suitible to be automated than the mechanisms of a traditional manual transmission.
That wasn't my objective with this video. Not even close
Very cool ! For some reason I can't save it
So , where's the automatic part of this video .
It only explain about plnetary gear .
But how / what decide the gear to switch from gear 1st to 2nd . Or from 2nd down to 1 st
A computer does that
@@interlinkknight
Many vids only explain the gear . Not the whole automatic interaction/connection between the computer and the gear
True. Maybe because it's kinda boring and easy to understand. You want to know how they program the computer? Or want to know how a valve or solenoid works? The used to be more mechanical and very complicated but now they are boring with valves, sensors and the computer. Still, there's a few videos I've seen where they explain that part.
@@interlinkknight
How the computer communicate with the gear
Like i mentioned, to select gears you need to apply clutches that work with hydraulic fluid. The computer applies the clutches with solenoids.
Very interesting!! The reverse, out of normal mind.
أكثر شرح مبسط لمبدأ عمل علبة التروس الأوتوماتيكية
Good explanation but far to fast.
Can you make a video for the 3-speed double planetary set in say a Toyota 2000?
That would be cool but I have many projects I'm working on, so maybe in the future. I encourage you to make it yourself, maybe with Fusion 360. It's easy to use, free and you can do basically anything. Give it a try!
This is bt far the best explanation of of the automatic transmission in youtube
My mind didn't comprehend all of what was going on there, but it does look good so subscribed, liked, and totally faved.
That's a hell of a lot of rotating mass. And try to print it. I'm certain you'll find problems.
I am not afraid of challenges.
Good work