ZF vector differential

[117nathanmyers]

It is like a tank but not... what an awesome idea.

[olie854]

maybe be confused but i think have a grasp of the configuration,

the differential operates as normal a normal diff going straight,

then upon cornering the actuators tighten the corresponding clutch plate for cornering, however i see one major problem, if you look closely the two cornering planetary gear configurations are the same on both sides NOT a mirror image which they should be, when gong left torque is taken away from the wheel not added like the right, the animation model was made wrong.

[unnamed15rus]

Actually this is Mitsubishi technology

[TechCrazy]

@unnamed15rus : I believe even the Acura RL AWD used this system.

[BOOSTEDAZ1]

I don't get it what is this meant to achieve

[JetMechMA]

@BOOSTEDAZ1 Exactly. What it is meant to achieve is emptying your wallet. People just need to slow down. That's all.

[IRDeezlSmoke]

WOW, that is an awesome creation. Is the actuation mechanism fluid or electric? What is the reaction time of the activation? Very nicely made animation. I often wish I had that sort of computer knowledge. Thanks.

[belaruz]

@IRDeezlSmoke

I assume you mean @0:36 and 1:02, is that correct?

Since you can see the outmost gears on each side turn each respective time it's my belief that the parts with the ZF marking on them is electric motors that turns the gears that in turn engages the brakes (the parts that "turn" red) using some mechanism with threads.

(I found a written source stating that it indeed is in this way. gizmag.com/go/7426/ )

[IRDeezlSmoke]

@belaruz Thank you belaruz. That is exactly what I was asking. Now days engineers do some really great stuff with both electric and fluid actuation of things. I figured I'd ask which form of actuation was used in this creation. Thank you.

[Exgaves]

So this is the same as that Audi quattro sports diff?

[SweetMooch]

But does it drift?

[Exgaves]

@SweetMooch not if it's an open diff.

[IOPPCORP]

This video rocks, we also produce this as well.

[STEPH78155]

This is a great way to limit slip and transfer power thus increase traction on the tyres,

If your brain is to small to understand this concept..... pls keep it to your self.....? Your only making an arse out of yourselves.

[Dr4x4guy]

overly complicated nonsense, y not just use the much tougher simpler & better functioning Detroit Truetrack

[KLsemperFi7]

@xWethewalrusx yeah i was looking at the planetary modules instead of the the joint near the clutches, they were moving correctly, my mistake

[swallow285]

thanks u



[KLsemperFi7]

i assume what this design intends to do, though the simulation is terrible, its wrong actually when they're cornering, the wrong side is spinning faster, but however, i think what this does is it transfers direct power to the wheels at all times when there has to be a split. with an ordinary differential, as soon as theres a turn, one wheel effectively becomes free spinning, all the power is to the wheel spinning with less resistance... the outside wheel. thats what i gathered

[Sonzil]

@KLsemperFi7 you took my words

[Tychsen81]

And if the planet gears are connected to both of the inner gears at the same time (it sure looks that way), why do they spin at different speeds during corners? Am I completely off here??

[Tychsen81]

Maybe this is smart if you are a gearhead, but braking has never been very fuel efficient. And that is basicaly exactly what the clutch does to the faster spinning wheel. And what a lousy simulation this is. None of any two gears on the same axle spin at the same speed while cornering. They should, shouldn't they? I mean the two gears on each end of the slow axle going from the diff to the planetary gear.

[LovemeAquarius]

Im thinking about the 5 "dislikes" below the video......... may be jelous of zf ??

[azeraqw2]

please can somone tell me what is the name of the software used to do this simulation

[euparoca]

OBRIGADO !

[dahappyaxe]

This is a beautiful vid, but it did take me some time to realise they haven't actually done away with the pinion and crown wheel set! So all that coggy whizzy stuff is to let drivers think they're great when in fact they need a lesson from some punk in a open wheel diff sliding past at 60 miles an hour.

God i'm a wanker, LOLOLOLOLOLOLOLOL, sigh.

[StevesProjects]

Now thats a big differential! Whats the advantage of the ZF type over, say, a Torson differential which is a quarter of the size?

[ihazpowrz]

@StevesProjects A Torsen is a limited slip differential. This differential applies speed and torque vector modulation to each driven wheel. Notice the actuator motors applying the multi-plate cluthes which direct power to a planetary gear set. By adjusting how much the clutches are applied the differential can vector the speed and torque sent to that wheel. By accelerating the driven wheels through corners the traction control can significantly increase cornering speed.

[bagger2222]

@StevesProjects this diff is electronicly supported. a torsen-diff is purely mechanical. due to its construction it only lowers traction losses while the diff in this video tries to actively avoid slip at all. in order to do its job it needs reaction time () while the torsens effect is imminent.

after all these two systems are different in any possible way.

[reddot44]

shouldn't the outside wheel be spinning more?

[NeverWithMindBand]

I'm guessing this is just another scam to get you to think that you spending more money for more metal is going to be beneficial because an open differential already gives more power to the outer wheel in a curve.

[shane12345656]

@NeverWithMindBand a open one puts it on the wheel with the least traction

[ilovedeuce9]

fancy but too much weight for the exact same thing a 2-way LSD can do

[carriersignal]

I watch this video for the synth music. As for the 3d modeling of this rear end..... lost in the sauce.

[Rotemetoot]

So there's a lot of 3d modelling in this, but we don't get to see the differential in action during a turn...

Have to dislike the vid for that.

[waterkeeper03]

@Rotemetoot Right around 36 seconds, if you pay close attention to the center gears that are rotating toward the drive shaft you see them start to turn. up untill :36 they were sitting still, now they are rotating to compensate for the different in rotation of the tires. you can also see at :36 that the gear sets on the far right begin to rotate faster than the sets on the left, and then at 58 they meet and the left starts to spin faster. they could definitely have done a better job..

[FuckinShovel]

I've been watching and rewatching this and for the life of me I can't figure out 2 things: what purpose do the outboard planetary assemblies serve (do they mechanically engage a jackshaft that turns the ramp to engage the clutches?) and how is any of this superior, or functionally different from just applying braking force to one side of a conventional differential?

[jonathantatler]

I'd agree that it appears to opperate the wrong way round, but it also looks far more complicated than it needs to be!

It looks like its a clutching LSD running in conjunction with a 'Torsen' type gear-set.

I'm sure if you can vary the clutch loadings while in motion you'll have even more control but how complicated!

[pinoyALLmotorEVOIXMR]

so basically when the car turns left, the rear right wheel spins faster, while the rear left wheel turns slower?? and when the car turns right, the rear left wheel turns faster, while the rear right wheel turns slower?

[distortedlife55]

Does it use a sort of brake system to slow the outside wheels?

[GuidoScocozza]

@distortedlife55 Seems, but can't figure out what is the purpose.