How a Differential Works and Types of Differentials
2011 ж. 27 Нау.
6 244 500 Рет қаралды
www.curvedspacecreative.com
Video I created for Toyota in 2007. This was produced on a budget but its purpose is to explain the concepts and not be a Pixar-budget film.
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A big thank you to whoever created this video. The visualization makes all the difference. I've read so many forums and articles that just repeat the same words over and over without adding to any actual understanding.
This video really grinds my gears
i think i have learnt more in 4:44 than i have in my life :) thanks , really good vid
Incredible, I turned 345 last Wednesday and even at my age I understood this video easily.
You did this on a budget. Proof that expense doesn't necessarily equal quality. Great video!
Really cool video. Easy to understand and follow. Well done!
Nice! also helped to answer my question about the difference between a truck and a sports car
awesome video ! thank you
awesome job guys! great video even though i knew how a diff works this video makes it easier for me to explain what i know to others
Just watched all your vids and I must say pretty interesting. Nicely done
thanks for the vid. basically summed up half of my course and simplified the components.
Never heard of the Auto LSD till this video. But I just thought about in my head it right before I saw it. Nice job Toyota. Practical simplicity.
Great work. Thanks for sharing info.
You have really done some hard work, thank you, its informative.
Voice Over artist. Someone who professionally does voice recording work.
Excelent vid. Animtation is pretty clear, don't need enough.
This video gave me a great help to update my knowledge thank you.
Spot on with your description. So many people misunderstand ABS Traction Control. I have a Volvo XC90 with this kind of traction control, and I'm amazed at how many Volvo owners are confused about this. (They also confuse Spin Control with Traction Control--two different things completely. Volvo recommends turning off Spin Control when in low traction situations.) I don't have a button for Traction Control though--it's all automatic.
Great knowledge share. Thank you
This video really help me
Awesome Video! Had a small understanding, now I completely understand! Thanks! :D
easy to understand, this was great learning tool.. thanks for the good video
Sweet page! Love it
Awsome ! After many failed attempts consisting of sites , forums and hours of googling, I finally find in a 5 min package and understand everybit of it :D :D !!!
Very informative video! I knew about slip differential because of my truck but I never knew whats really going on in the rear end.
such a superb video
Great vid. Easy to follow
There are a number of different but related software packages that control wheel slip via use of the brakes but they are actually technically independent. VSC (skid control), TRAC (traction control) ALSD (auto LSD), ABS (anti-lock-brakes), and Brake Assist (BA) all utilize wheel slip/brake control to accomplish a task but they are independent and were not always included as a full set of installed software. Some of the systems reduce engine power, some change brake pressure etc.
This was amazing. I learned about differentials
Great video!!
excellent, very concise and informative. thank you.
I was workin on a Lego model truck with deferential,this vedio helped me to figure out few tricks to modifie it!thanks for such a great video
Great explanation!
very good video ....continue .
very interesting, thanks for uploading
God bless you man. 5 stars for the video. LOCKING DIFF. are widely used in Tractors.
It just clicked! Hell yeah. I've been curious forever about this topic.
That's a pretty cool unit!
helpful educational videos. I am very happy.
Very informative! Sales people at off-road stores can’t even explain it like this. Using Laymen’s term is the secret!
To be fair, its very difficult to explain this to someone without pictures or a video. Either way you cant describe it correctly or even if you do, the person you are talking has not the required abilities of imagination. :)
awesome video, helps alot!
Locking differential at 3:28...Do both axles actually receive equal power (P)? Since they are locking the angular velocities (w) are equal, and the torque (T) on the side with more traction should be greater? P=T*w so T=P/w. If P is equal on both axles and so is w then T would be as well which is not the case correct?
@89Silhouette Again, the brakes are pulsed via an ABS type system to not stop the wheel from turning but to create some drag to transfer power to the opposite axle. That type of system is a low-speed only system. There seems to be a misunderstanding that the brake "holds" the wheel from turning but it's rapidly pulsed only to the extent needed to transfer power. It has to be manually engaged via a button also.
Great video - I am 52 and never understood the differential fully. It's hard for most people to understand how things were BEFORE the differential came along - try one of those off-road vehicles or go-karts without this device - it judders on a bend and of course, has better grip on the straight for acceleration. It's fair to say, it was probably made to improve the comfort of some posh bloke in a big limousine - should look it up I guess! This is the perfect animation, I sat and 'paused' the action, and thought through how it works - so now I know that in normal operation, driving straight ahead on a good road with no tyre slip, the 'twiddly bits' in the core of the action sort of act as 'locked up'. Then come a bend or tyre slip on one wheel say, that situation changes. Such a straightforward vid to view and think about how it works. Good work. Also, for further thought people out there could figure how to limit the slip for extra traction on snow etc? Obvs, lots have tried it and there are umpteen variations both involving the differential itself, freewheel-type devices on each axle (like bicycle, one way it's turned it provides drive, not the other, think about it!), aand the old standby now, using ABS system to jam the wheel that's spinning free, to 'force' the wheel with grip to turn a bit. Yes, food for thought, great vid.
My cousin has an FJ Cruiser. I pressed the "lock differential" button and went offroading with it...upon coming back to the road, the car felt very very weird on turns, i thought i have ruined something in the suspension...after several hours, my brother pointed out that i still had my "Lock Differential" button activated.../facepalm
MrSakninsh My cousin uses the car pretty much everyday, there aren't any problems
MrSakninsh Only if it is an incredibly weak and poorly built one, but I'm assuming he actually meant rear diff lock and not transfer case lock because I don't think FJ's are full time all wheel drive, in which case it's a completely different part he is talking about.
MrSakninsh Well, depending on what you want to mean, pretty much every differential has to be "interaxial" by design. While the only "Toyota" I've owned had almost no Toyota parts on it, Toyota's reputation would indicate that neither a transfer case mounted or rear axle mounted locker should break ever in that circumstance. Also, a rear diff lock should disengage automatically above about 15 MPH for safety reasons. All OEM ones that I'm aware of do that.
sleekitwan I don't believe it was made for limousines, from what I've gathered early cars used to be only 1 wheel drive, but that was terrible since most roads were very rough and definitely not paved, which made cars really tedious to drive. Making cars two wheel drive was a necessity at the time, therefore the differential was created to allow both rear wheels to have power.
Loved this vid..thanks a lot.
muy bueno el video
nicely done
Very well described!
Good Explanation...I got it atlast...Thank u
bery good job!!
hi guys i needed this
Have had my tundra for 10 years, had no idea what Auto LSD does. Ty!!!
thanks for your video
Great video! :d
Ingenious !!!
the powertrax no-slip is the best auto locker ever made and best set up for on or off-road.
@thebluecommet The video states that ALSD(aka brake based traction control) does a better job of trasfering torque then other differentials. And it does. Mechanical LSDs can't really change the torque distrabution, they just limit how much of the torque can go to the wheel with the least amout of traction. Brake based traction control can make the wheel with the least amount of resistance the wheel with the most amout of resistance. This why many modern cars use it.
VerY HELPFUL
fab explanation
Excellent!
I finally understand basic differentials now. I grew up thinking that a basic differential sent power to one dominant wheel (right side) 100% of the time and the other wheel part of the time. Turns out both wheels are treated exactly the same in relation to one another.
I have used all 3 type of Diff's and like the clutch pack lsd the best because Locking diff's come on suddenly and blow the entire truck sideways and can be downright scary when side hilling above rivers ect, the electronic ones dont work when rallying at speed and wait to kick in when you have already lost all speed. The clutch system is a constent manageble mesh that works great in the situations I drive.
Might not be supposed to be a high budget movie.. never the less, it looks very professionally done. And is well done and pretty illustrated. Ty for clearing my thoughts on how a LSD works.
awesome guys
thanks. super helpful
wonderful work thankssssss very much
Help me a lot, thanks
i just discovered differentials today, and this stuff is very, very interesting. is there anywhere i can learn more about stuff like this?
gostei muito bom
great video prefecft to use in my rtv safety training
Very helpful!
Exlent video
awesome!
nice video
@Jesus45U I wrote the script and it was for training sales consultants not for marketing. The primary disadvantage is that it's designed for low speed situations where the vehicle is likely to get stuck. It's not designed for all driving situations like, say, a mechanical LSD.
@PayDroification DRE (driveshaft rotation effect) also means that if you attempt to back up quickly, you may spin the left rear wheel more than the right. It's not that only "one wheel drives", it's that your "go traction" is limited by the wheel with the least traction. One of the advantages of independent rear suspensions on rear driven wheels is the elimination of DRE.
nice.. thanks
Nice! :) Very usefull! tx!
Limited slip using braking very clever, thank you.
nice one
Thanks for the education.
You did happen to skip a very well-known differential, the 2-speed differential. I'm not sure if Toyota ever put one in any of their commercial trucks, but most all other manufacturers have, from 1-ton trucks up, at some point. To see how they work is truly ingenious and resolves the age-old question: gear for torque, or gear for speed. With a 2-speed, you can have both. In a truck, this is very helpful.
Nice!!!
@allegroracing Right on...Thanks for the note.
very nice....description...........
@allegroracing please demonstrate how it's possible for a differential to be placed on either left or right of an Axle instead of the center, like on the Toyota land cruiser 70 series. Thank you.
That's a tough question to answer. Remember it's the tires adhesion that ultimately determines if the car moves or the tires just sit there spinning (or skidding if the car is moving). The ability to control wheel slip and distribute power to any of the 4 wheels is very helpful in situations where one or more wheels are slipping but one or more have traction. However, if all 4 tires are on ice and there's no adhesion for any tire, no drive system will get the car moving.
good one
ya i no what a welded diff is now. i have know for quite some time, but thank u for the reply. i appreciate it.
I did a little research, a humming noise is often caused by an incorrectly installed ring and gear pinion, which needs to be adjusted, the incorrect installation of ring and pinion gear prevents proper tooth contact and can cause rapid tooth wear and can cause gear failure. This humming noise converts into growling noise when the wear increases. Humming noise can also be caused due to worn out bearings, which needs to be replaced.
Good explanation......
I wish I could do some more extensive videos like this. I had put this on the web for a single conversation on a forum with 6 people viewing it and next thing I knew it had all these hits. If I ever get the opportunity though, I'd make a more wide-ranging video. For instance, I was focused on low-speed differential characteristics because this was trucks. It would be good to do high-speed where LSDs and other mechanical diffs are superior to brake-diffs (which don't work at speed).
1:35 A false claim is made; the power will remain the same! It is the torque and speed that will very. Of course assuming all frictional losses are comparable between the different gear ratios.
Holy sh*t I get it now. What an informative video. Thank you.
Very interesting
im a huge DRIFT nerd so i need to learn abotu this, nice video =D
Very informative
@bubub56 It operates exactly the same as a locked locking diff. Both rear wheels turn exactly the same RPM relative to each other. Great for a dedicated drag car, maybe an ice racer, or possibly a rock crawler. A spool would have way too many drawbacks for any other applications.
super ❤
that is called diff lock. nice video; gotta tip my hat for you
wooow.... , Nice!