Good visuals help. Also, university is not what it used to be. The internet gives far more information on demand with multiple sources. Most of the time this is for free. University just can't keep up with this.
I remember one of my professors telling me "The most important thing you must learn is to study by yourself ! " It was a good advise. Internet, being probably the greatest invention of the 20'th century, helps a lot in that regard.
You guys are doing very great job All animation videos are very good. I am assistant professor in mechanical engineering . I used to show my students. I hope you guys will make such knowledgeable videos related to mechanical engineering. Thanks you
James watt invented it to get around the patent for using a crank shaft to turn reciprocating motion into rotational motion ;Watt patented it but it could be the invention of one of his employees en.m.wikipedia.org/wiki/Sun_and_planet_gear
I learned this more easily when I was 12 years old by reading a series of carefully written car books, produced in 1957 and offered for free by GM. Specifically - "Power Goes To Work (In the Automobile)" and revised in 1969. And it does help to be in a calm state of mind. Ha ha.
Great vid! I wish you had one specifically for the Borg warner overdrive, that used the same setup to simply add a gear to a manual transmission and at the same time make it automatic!
Yes. Toyota calls it the Power Split Device (PSD). Motor Generator 1 (MG1) is connected to the sun gear, MG2 is connected to the ring gear, which is in turn connected directly to the driving wheels, and the internal combustion engine (ICE) is connected to the planetary gear set carrier.
@@qwasrfg If I understood correctly, the ratio between the ICE and the wheels when MG1 is not turning, is comparable with a classic transmission's 5th gear... driving away from stationary happens on the power of MG2 and only at a certain speed the ICE is turned on and gradually takes over... MG1 regulates the ratio between turning speeds of ICE and wheels. Cool application, and seems to be rather reliable.
@@marcdecock7946 Yes. You have perfectly understood how the Toyota hybrid synergy drive system works. And, as you have explained, the way the ratio of the contribution of torque from the ICE to the wheels is regulated by MG1 is why Toyota calls it an eCVT (electric continuously variable transmission). Normally, the ICE kicks in around 60km/h, unless you press the accelerator pedal hard. If the ICE is running, any excess mechanical power is converted by MG1 to electrical energy and sent directly to MG2 to drive the wheels (in which case the system becomes a series-parallel hybrid) or sent to the battery to be stored for future use. If the wheels lack power, electrical energy from the battery is dumped into MG2 to help the ICE if the computer calculates that this is the most efficient way of using the available energy (petrol in tank and electricity stored in the battery). When you lift your foot off the accelerator pedal and/or press the brake, MG2 becomes a generator and charges the battery. If the battery is full and you are running downhill, there is a B (brake) mode you can use. In this mode, the electrical power from MG2 is sent directly to MG1. This causes MG1 to spin the ICE, the latter working as a compressor since no fuel is being injected in the cylinders. Thus you still have conventional engine braking but without wasting a single drop of fuel. Beautiful technology!
@@qwasrfg I agree, it's not that much additional hardware, and the result is worderful. Also recuperation of brake-energy... I did my thesis on CVT's with a V-belt, too much wear and tear . I understood Toyota is also looking to make a hybrid driveline with a double planetary gearset, even more fun, but they seem to have some difficulty to optimize it with electronics...
We had a 1series with rear wheel drive, now an X1 with front wheel drive... You would probably say the x stands for ex-bmw, but it's not so bad, especially with some snow on the road.
Me, too. This 'explanation' is totally impenetrable to me. In my experience, technical experts are quite unable to explain a concept like this to a non-scientist, non-mathematician, non-technical person. They just do not know where to start. I have just watched it again and it was even more confusing a second time. It reminds me of science at school.
Sangramjit Chakravorty Thanks for your reply. yes, of course, and that is probably true. But I would certainly be able to understand how it works if I had one in my hand and could rotate the gears and work out how they fit together. But technical people definitely do not seem to be very good at explaining things to non-technical people. I have watched many explanatory videos on YT on scientific and mathematical topics and haven't found a single one that is simple and clear. They always move far too quickly an d assume you know all sorts of things that they take for granted, which you don't actually know. The worst are the mathematical videos. With a practical item like a gear, you can at least imagine its reality, but as for calculus or anything with equations in it, well .... I gave up long ago. I would just love to pin down a mathematician, face to face, and ask questions. Where does that new quantity come from. Where is that x squared from? It has just appeared out of the blue without explanation. Everything is so abstract. How does one know that the items in an equation refer to something real? Maybe be the mathematician has just made them up?
@@orglancs I feel exactly the same about all of these scientific topics. Technical people seem to live in their own world and are incapable of thinking like a non-expert. Sadly there are teachers like this as well, and they just skip over a lot of steps and expect you are able to follow... It's rather frustrating.
@@LexusGX460-OFF-ROAD I have a 2022 Tahoe with 7000 miles on it and the transmission started making a noise. The service department said the planetary gears were damaged. What other part malfunctioning would have caused them to become damaged?
@@michellegibbs6907 lack of lubrication from insufficient oil pump pressure will cause the gears and/or the bearings inside the planet gears to overheat, burn out bushings, etc. or serious abuse can damage the planetary gears.
all the animations are good. I want more learning videos on carburetor because no such a explaining video on RUclips that explain working of solex,su,or Carter carburetor . please create animation video on above type of carburetor
@Mr Sunshines wow harsh reply. At the risk of sounding like a moron myself I have to take it. Can I have a Ring gear be the drive gear. For example it would have teeth on the outside as well as inside. The outside teeth are rolling down a rack gear like a wheel on a railroad track. I would make the planets stationary and the sungear is my output gear. I basicaly need an 8" diameter wheel that is rolling at 20mph or 840rpm to turn a shaft 3,000 rpm. I thought planetary gear set up would work well. Thoughts?
@Mr Sunshines u could just say refer to 41 seconds into the video when the animation is complete.. and also mention the power input turning the planet carrier turning the pinion gears which turn the ring gear? Instead of just calling someone a dumbass..
@Mr Sunshines no counterarguments in any of his replies.. just the word "dumbass" Look everybody!! We found someone who thinks they're cool because they understand simple gears! Lmfao
Gears are quite easy to understand, once you get 2 points: 1. Perimeter: a gear with 2* perimeter will make an adjacent 1* perimeter gear, spin twice as fast. 2. Clockwise (C) and counterclockwise (CC): very important to see spin (or as it is called in science and engineering "angular momentum") as going C or CC, not spinning "to the right" or "to the left" (confuses things). So a 'C' spin will go: - downwards on the right edge - upwards on the left edge - rightwards on upper edge - leftwards on the lower edge 'CC' spin will be the exact opposite. If you see a complex gear system, just break it down to its component gears and observe their individual behaviors (you may wanna start where the power comes).
@@rolyfisher9137 we had a 1 series RWD before, and an X1 FWD now... both 136 hP The 1 series was more fun... for us with good weather, for others with snow on the road... We also have a smart with RWD, but that has no comparison with the 1 series. It's more likely to flip over (than to give you more grip for the driving real wheels when accelerating).
I think this is so much less obvious when you show the ring gear moving for both first examples. Much easier to understand if you see the sun gear being driven with the ring gear still, and the carrier being rotated by the planetary gears revolving
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Teachers have spent hours trying to explain this simple concept whilst an animation does it in 2 minutes. Thank you.
3 f***ing weeks to understand this concept at uni and in a 4.52 minutes video you explained more clearly than my teacher. :D
THIS IS BETTER THEN COLLAGE
Good visuals help. Also, university is not what it used to be. The internet gives far more information on demand with multiple sources. Most of the time this is for free. University just can't keep up with this.
Plus, these days a lot of unis just teach identity politics, not engineering.
I remember one of my professors telling me "The most important thing you must learn is to study by yourself ! " It was a good advise. Internet, being probably the greatest invention of the 20'th century, helps a lot in that regard.
I learned it when I was repairing my broken electric screw driver. University really isn't an efficient place for learning things.
1:23 "that is an impossible condition" It is very much possible, very well documented and often fun to watch from a distance. you may carry on.
Oh it's bad for the teeth though
Oh it's bad for the teeth though
tends to up the maintenance costs a bit
it is an impossible condition for gears to pass through gears without destruction, as shown in the video.
impossible conditions are a weak mindset, its only impossible when you stop trying.
I need to hold this in my hands to see work.
You guys are doing very great job
All animation videos are very good. I am assistant professor in mechanical engineering . I used to show my students. I hope you guys will make such knowledgeable videos related to mechanical engineering. Thanks you
Best video about this mechanism, not only for the images but for the detailed verbalization in order to understand the logic.
Whoever invented this deserves a cake. Genius.
It may have been Henry Ford. The model T has a planetary gear transmission
James watt invented it to get around the patent for using a crank shaft to turn reciprocating motion into rotational motion
;Watt patented it but it could be the invention of one of his employees en.m.wikipedia.org/wiki/Sun_and_planet_gear
I made inattentive driving much more popular, that’s for sure.
Thanks for sharing engineering with a wide audience!
Praise the sun gear.
Clark Manor Deus 4L60
ahahahahahahaa
Clark Manor ..
I'm bowing down now!
May the sun gear shine your way , unkindled one.
after differential this is the best engineering marvel i have ever seen
I have assembled planetary gear unit set in transit mixer however this video clearly explains a lot thank you 🙏
Amazing!
When I finally undestand it, Eletric Motors comes and render it completelly useless!
THE EXPLANATION OF THIS SYSTEM WAS OVERENGINEERED...
Nice touch getting Robert Forster to narrate this!👌🏻
These robot voices are getting really good!
hi i am kundu . this gear system is a wow wow. i am understanding not before,but after,now i am knowing.many many thanks and bolo jai zuban kesari
I learned this more easily when I was 12 years old by reading a series of carefully written car books, produced in 1957 and offered for free by GM. Specifically - "Power Goes To Work (In the Automobile)" and revised in 1969. And it does help to be in a calm state of mind. Ha ha.
Brilliant video ! 👍
Great vid! I wish you had one specifically for the Borg warner overdrive, that used the same setup to simply add a gear to a manual transmission and at the same time make it automatic!
I have zero practical need for this channel. I cant stop clicking their videos though.
I have cleared BE in 2017 and understood this concept in 2021 😝😝😝.
God bless you Sir. Make more and more videos Sir.
You must be a disgrace to your parents
Superb Video, With Superb Animation !! Thanks LE !!
I’m only 12 but managed to make an entire transmission with this video
the best explanation on the Internet
Best Channel In RUclips.....For Me
Venkatanaveen Kodamagundla.
.
.....
영상으로 보니 확실히 한방에 암기가 되네요
감사드립니다
Also an interesting application: the hybrid drive from Toyota...
Yes. Toyota calls it the Power Split Device (PSD). Motor Generator 1 (MG1) is connected to the sun gear, MG2 is connected to the ring gear, which is in turn connected directly to the driving wheels, and the internal combustion engine (ICE) is connected to the planetary gear set carrier.
@@qwasrfg If I understood correctly, the ratio between the ICE and the wheels when MG1 is not turning, is comparable with a classic transmission's 5th gear... driving away from stationary happens on the power of MG2 and only at a certain speed the ICE is turned on and gradually takes over... MG1 regulates the ratio between turning speeds of ICE and wheels. Cool application, and seems to be rather reliable.
@@marcdecock7946 Yes. You have perfectly understood how the Toyota hybrid synergy drive system works. And, as you have explained, the way the ratio of the contribution of torque from the ICE to the wheels is regulated by MG1 is why Toyota calls it an eCVT (electric continuously variable transmission). Normally, the ICE kicks in around 60km/h, unless you press the accelerator pedal hard. If the ICE is running, any excess mechanical power is converted by MG1 to electrical energy and sent directly to MG2 to drive the wheels (in which case the system becomes a series-parallel hybrid) or sent to the battery to be stored for future use. If the wheels lack power, electrical energy from the battery is dumped into MG2 to help the ICE if the computer calculates that this is the most efficient way of using the available energy (petrol in tank and electricity stored in the battery). When you lift your foot off the accelerator pedal and/or press the brake, MG2 becomes a generator and charges the battery. If the battery is full and you are running downhill, there is a B (brake) mode you can use. In this mode, the electrical power from MG2 is sent directly to MG1. This causes MG1 to spin the ICE, the latter working as a compressor since no fuel is being injected in the cylinders. Thus you still have conventional engine braking but without wasting a single drop of fuel. Beautiful technology!
@@qwasrfg I agree, it's not that much additional hardware, and the result is worderful. Also recuperation of brake-energy... I did my thesis on CVT's with a V-belt, too much wear and tear . I understood Toyota is also looking to make a hybrid driveline with a double planetary gearset, even more fun, but they seem to have some difficulty to optimize it with electronics...
Educational Service... GREAT! Thanks..
Alright got it, good video. Now what I really want to know about is an interplanetary gear set!
This Indian channel easily explained everything .
Proud to be an Indian
@Yashsvi Dixit same 2 you
Thanks for the lesson! It's very useful :)
Also I would appreciate if you made a video on how to calculate the planetary gear ratio.
You couldn't be more clear ! Thanks. Please go on posting
Why I'm watching this at 4 AM instead of sleeping? I'm not even into engineering.
because you are inspired?
You will. Google knows.
Here I have my infinite reduction machine :ruclips.net/video/CQbX-Gk7Xgc/видео.html
Same here
You are into engineering now. RUclips algorithm has decided that you are.
Surely, all those views are very good for learning process and also thanks goes to all production-teams!
It's me,
Sule Shangodoyin.
I've been waiting for this video for a very long time 👏
Why did you waiting?
Stunning Explanation.
You could make an equal wheel spin differential with 2 of these. Awsome!
A complex concept explained simply !
I love engineering
mee too
me 4
me 5
Ok
Me 6
My brain is exploding.
Nice
I know! I'm trying real hard to keep up too! Lol
Haha
@dex dipa hahahahahaha
.
....
great video which help me understand the principle quickly :D
BMW with a transversal engine and front wheel drive? NNNOOOOOOOOO!!!
Exactly the comment I was searching for LOL! On the spot!
RIP real BMW
I'm afraid the nightmare had become reality since the release of the new Clio... I mean 1 series
Here I have my infinite reduction machine :ruclips.net/video/CQbX-Gk7Xgc/видео.html
We had a 1series with rear wheel drive, now an X1 with front wheel drive...
You would probably say the x stands for ex-bmw, but it's not so bad, especially with some snow on the road.
Elegantly simple, classic engineering thought.
Se ve exelente así es gran funcionamiento interior de el diferencial 👍
Brain challenging. Have to watch it again. Thanks for the brilliant lessons.
Спасибо за ,,обьяснение,, принцип работы- сам додумал
Да, несомненно это одно из величайших достижений инженерной мысли!))))
This gear also used in cordless drill
Very good explanation
You lost me at 00:01
Me, too. This 'explanation' is totally impenetrable to me. In my experience, technical experts are quite unable to explain a concept like this to a non-scientist, non-mathematician, non-technical person. They just do not know where to start. I have just watched it again and it was even more confusing a second time. It reminds me of science at school.
🤣
@@orglancs maybe you just don't have the aptitude for science? Different people have different types of aptitude.
Sangramjit Chakravorty Thanks for your reply. yes, of course, and that is probably true. But I would certainly be able to understand how it works if I had one in my hand and could rotate the gears and work out how they fit together. But technical people definitely do not seem to be very good at explaining things to non-technical people. I have watched many explanatory videos on YT on scientific and mathematical topics and haven't found a single one that is simple and clear. They always move far too quickly an d assume you know all sorts of things that they take for granted, which you don't actually know. The worst are the mathematical videos. With a practical item like a gear, you can at least imagine its reality, but as for calculus or anything with equations in it, well .... I gave up long ago. I would just love to pin down a mathematician, face to face, and ask questions. Where does that new quantity come from. Where is that x squared from? It has just appeared out of the blue without explanation. Everything is so abstract. How does one know that the items in an equation refer to something real? Maybe be the mathematician has just made them up?
@@orglancs I feel exactly the same about all of these scientific topics. Technical people seem to live in their own world and are incapable of thinking like a non-expert. Sadly there are teachers like this as well, and they just skip over a lot of steps and expect you are able to follow... It's rather frustrating.
very educative. Thank you regards
kind of feel like the narrator tone is pat-ronizing me because I don't know shit about gears and am watching this for fun.
I am surprised that he is still alive: he MUST be the guy who did all of the voice-overs in 1950's feel-good newsreels!
Dare not judge a helping hand.
This video taught me more about engineering than half of my college classes.
Probably should have used your brain a bit more then.
@@ShortArmOfGod it's not that I didn't understand the classes, it's that those classes had nothing to do with engineering.
BMW with FF layout model xDDD
This videos are way better than the today ones.
What causes the planetary gear set to become damaged?
nothing. It is constantly meshed. Clutches and brakes can wear out though... alsong with hydraulics
@@LexusGX460-OFF-ROAD I have a 2022 Tahoe with 7000 miles on it and the transmission started making a noise. The service department said the planetary gears were damaged. What other part malfunctioning would have caused them to become damaged?
@Michelle Gibbs just trade the Chevy for a Toyota or Lexus... 😃
@@michellegibbs6907 lack of lubrication from insufficient oil pump pressure will cause the gears and/or the bearings inside the planet gears to overheat, burn out bushings, etc. or serious abuse can damage the planetary gears.
@@Isjix4410 thank you for that information. I want to make sure whatever caused the planetary gears to become damaged is fixed.
best video about the planetary gear!!
Sir, can you please tell me which software did you use to design these animations.
Your videos are awesome.
Seriously helpfull
Previously i was confused and after watching the video im completely satisfied
wheel within wheels 🥺🤤👽
In the corner of your mind
It is easily explained so nice.
all the animations are good.
I want more learning videos on carburetor because no such a explaining video on RUclips that explain working of solex,su,or Carter carburetor .
please create animation video on above type of carburetor
pay the man
Thanks for the explain. Great!
Should be titled:
How to complicate simple
Very good explaination
2:47, How do you rotate the ring gear? There is no shaft connected to the ring gear for torque input.. please explain
If you want, the ring gear can be it's own wide shaft.
@Mr Sunshines wow harsh reply. At the risk of sounding like a moron myself I have to take it. Can I have a Ring gear be the drive gear. For example it would have teeth on the outside as well as inside. The outside teeth are rolling down a rack gear like a wheel on a railroad track. I would make the planets stationary and the sungear is my output gear. I basicaly need an 8" diameter wheel that is rolling at 20mph or 840rpm to turn a shaft 3,000 rpm. I thought planetary gear set up would work well. Thoughts?
@Mr Sunshines u could just say refer to 41 seconds into the video when the animation is complete.. and also mention the power input turning the planet carrier turning the pinion gears which turn the ring gear? Instead of just calling someone a dumbass..
@Mr Sunshines lmfao you are a joke of man
@Mr Sunshines no counterarguments in any of his replies.. just the word "dumbass"
Look everybody!! We found someone who thinks they're cool because they understand simple gears! Lmfao
wonderfully simplified, ..that too,with exact clarity
Ага. Теперь все понятно. Осталось выучить английский язык
😂😂😂
Gears are quite easy to understand, once you get 2 points:
1. Perimeter: a gear with 2* perimeter will make an adjacent 1* perimeter gear, spin twice as fast.
2. Clockwise (C) and counterclockwise (CC): very important to see spin (or as it is called in science and engineering "angular momentum") as going C or CC, not spinning "to the right" or "to the left" (confuses things). So a 'C' spin will go:
- downwards on the right edge
- upwards on the left edge
- rightwards on upper edge
- leftwards on the lower edge
'CC' spin will be the exact opposite.
If you see a complex gear system, just break it down to its component gears and observe their individual behaviors (you may wanna start where the power comes).
Front-wheel drive BMW?
The BMW 2 Series Active Tourer is a FWD....
Niklas Ohlsson active tourer is not true bmw
rcomascat Every Mini is a BMW. Every Mini is fwd.
@@rolyfisher9137 we had a 1 series RWD before, and an X1 FWD now... both 136 hP The 1 series was more fun... for us with good weather, for others with snow on the road...
We also have a smart with RWD, but that has no comparison with the 1 series. It's more likely to flip over (than to give you more grip for the driving real wheels when accelerating).
I really appreciate your video information with working 3-d video
Don't understand this mumbo jumbo. Great video though!
The best explanation with all fundamental concepts . Just loved your work @LearnEngineering .Love u
Welcome back, fakest of fake voices!
Pat-reon lol
Is it software? If yes which one?
John Leo RTFD: READ THE F***ING DESCRIPTION
Clear animation, ingenious invention, thanks for explaining :)
Its hard for me to understand this shitness!!!
so, you are dumb
Most appreciable vedio. Great effort.Thanks.
This is great information thank you
Using the right words to describe a specific idea or action is critical to conveying information that is measured physical action.
Animation is most helpful for understanding
got an uni essay due in tomorrow about regional development in business.... but nah... this is actually really interesting
I love your videos
Thank you !
Great explanation
awesome video. Thanks for saving our planet!
Cool. I love your animations
This shows the power of graphical explanation!
I have imagined whole day, it was hard but finally your video cleared the concept. Thanks to your team.
Very helpful video
Danke, genau so dachte ich auch seit langem.
Адамнің мійі электрон әлемыне кіріп осіндай видиоларді құрастіріп өте түснікті. Жарайсың дар өте мақтаніш!!
Excelente videos, gracias desde México
yay, new video!
Nice video !! Thanks you
I think this is so much less obvious when you show the ring gear moving for both first examples. Much easier to understand if you see the sun gear being driven with the ring gear still, and the carrier being rotated by the planetary gears revolving
good explanation in short.....love it..
Really awesome...
Thank you, I just found your channel and subscribed. I love this type of info. !!!
Nice video. I was thinking of utilizing this design for a project im working on
I need a video like this, explaining the power split mechanism from a Prius 3rg gen.
Thanks again for the interview and the videos!