Quattro(torsen) is the best 4 wheel powering AWD system when all wheels got traction !!! work best on flat surface !!! and the worst AWD system when one wheel dont have traction !!! quattro is for normal cars not for offroads !!! if you going to buy offroad without difflocks you better buy quattro !!!
I might be mistaking this for EDL actually, I have the 2008 A4, Which should apply the brakes to the spinning tires and send the power to the wheels with the traction and it should just roll out correct?
From what i Understand and read about EDL, shouldn't, in this case, the car apply the breaks to the spinning tires and send the power to the tires with the most traction, the ones not on the roller? so shouldnt this car just roll out?
It moved using just the power of the spinning wheels - at some point they gripped. QUATTRO doesnt have Difflock on the axles - it locks two axles separately but it doesnt lock the wheels on each axle separately. So 1 wheel from each axle in the air like this = QUATTRO STUCK. its just the power that moved it.
No, you're wrong. Quattro has Torsen differential, that locks Axles. Byt EDS locks everything. It can even give all the torque on just one wheel. It usue brakes to block wheels that have no grip. EDS is old system, it was mounted in early 90, but they mounted it together qith quattro in 1995 in A5.
it moved beacuse TorSen work in that way, if one wheel have lower grip TorSen starting auto Block differential or auto transwer power to wheel with good grip its depend of type
TorSen can work without any electric or electronic system its completly mechanical and it newer fail thats why is the best
@batonki actually you are wrong. With the B5 A4 Audi removed the limited slip differentials so that quattro was a torsen center diff and open front and rear diffs. In place of the limited slips they use EDS to apply brakes to the wheel that is slipping. The only way to strand an AWD car with a torsen diff is to suspend one front and one rear wheel, but with EDS brakes are applied to the spinning wheel and power goes to the other side. Obviously you don't know AWD, cause quattro is the best
If so, please tell me how is it that an Audi A8 wont move an inch if You put rear wheels in the air or on rollers? The center diff should lock it and send power to the front of the car (and its not doing anything)
@batonki the problem with testing on rollers is it does not provide any traction, like having the wheels in the air. Even if your car is on ice, it still has traction. A good proof of this is bare rubber ice racing...while traction is limited, there is still an amount of traction. All you would have to do with a car on roller for both rear wheels is apply a small amount of brake, creating the same traction effect as on ice. Torsen differentials are purely mechanical, no electic tricks needed.
I quess You're right. it sounds about right:) thx. But anyway shouldnt it still apply brakes just like You say? All the electric systems like EDS and so on. Should do it after all to send the power to the front.
@batonki my understanding of EDS is that it was implemented to replace the locker diff on the rear with open diffs on both the front and rear. I don't believe it was intended to serve as an electronic AWD, but rather to eliminate the bulkiness of early quattro systems. I don't believe there is anything in EDS that would sense a front to rear imbalance and try to correct it. Simply applying a small amount of brake would cause the center diff to transfer power up front, so there is no need.
travelbytommy - not to nitpick - but again you are partially correct. The EDS/EDL is about sending power side to side (like a rear mechanical lock). Most SUV's that don't have mechanical locks do it now....and so do Subaru sedans. What still sets Quattro apart is the Torsen diff in the center (though the Lexus LS decided to "copy") that senses beforehand and doesn't wait until there is slippage to move torque. Torsen doesn't affect side to side though...
nitpicking? I said there was nothing in EDS that went front to rear. With a torsen diff though you do need some resistance on the rear axle to apply power to the front. You can jack up the rear wheels (absolutely zero resistance) of an Audi and the car will idle in gear all day long without going anywhere, but if you apply a small amount of brake pressure then it would fall off the stands.
@travelbytommy I have a kind of stupid question but i wanna ask you guys this because you sound like you know what your talking about. Why does the the diff send more power up front when you apply the breaks in the rear? wouldn't it be better if it send more power to the rear. to help out the rear if it has to deal with more force? thanks
@motorwolrdpl if you locking rear wheels and center diferential is an open one. then power vill escape to the front wheels. if center diff haz lock upp or limited slip or hydraulic contr. then center diff vill send power to rear whl.
travelbytommy - partially correct. Quattro never had limited-slip diff. They had heavy duty mechanical locks on the center and rear. Those are great for off-road but they are too heavy. Audi wants it's cars to be more sporty while still all-weather capable. The EDL is similar but doesn't give the capability of a fully mechanical locking diff. In on road cases it's not needed really. Even a Jeep Grand Cherokee no longer has them - (because most Jeep owners don't really go off-road).
@Amidat my bad. I knew they weren't always open diffs, I didn't know they were lockers. I just assumed they were LSD. Thanks for the heads up. To me EDL/EDS could have used a bit more braking authority, but on the other side, most people just need to learn how to drive in snow in the first place anyways.
Yes - I wonder about why the EDL's don't brake with more force - but my guess is that it would wear out the brakes too much (have to replace them too often) and it might make them overheat (unsafe once you get "unstuck"). It's a trade-off. Less maintenance and moving parts. So it means the system is more durable and because it's lighter - the car handles better and gets better fuel economy. The off-road capability wasn't worth it they felt. Again - very few SUV's even have them nowadays
Oh in the US Audi markets the system as EDL. My bad. I am usually good with the terminology. I love how high school kids are always telling me that the AG in Audi AG and Volkswagen AG stands for "Auto Group", but it really means Aktiengesellschaft. Or the kids that tell me that Quattro GmbH is not Audi's performance shop, but only Audi's AWD system.
I thought Audi's terminology for it was EDL? Electronic Differential Lock. I do know that with the 1998 and later quattro, it is physically impossible to get stuck unless all 4 wheels lose traction. The one exception to this would be like a rock crawling senario where both 1 front and 1 rear wheel are in the air at the same time (and I mean in the air with 0% traction). But who would take their audi rock crawling anyways. Nice work.
Is that sound coming from the car, or the rollers?
Quattro is really useful when we stuck at "roller"...:P
artistdavid 7 months ago 2
QUATTRO with 3 torsen diffs and EDS ,thats my dream :)
Tomek2581 1 year ago
@Tomek2581 - they no longer are using Torsen going forward... they use an in house diff
Amidat 5 months ago
Quattro(torsen) is the best 4 wheel powering AWD system when all wheels got traction !!! work best on flat surface !!! and the worst AWD system when one wheel dont have traction !!! quattro is for normal cars not for offroads !!! if you going to buy offroad without difflocks you better buy quattro !!!
Tomek2581 1 year ago 2
ma che cazzo di video è?!?!?!?!
raulcaligola 1 year ago
I might be mistaking this for EDL actually, I have the 2008 A4, Which should apply the brakes to the spinning tires and send the power to the wheels with the traction and it should just roll out correct?
tubik2 2 years ago
From what i Understand and read about EDL, shouldn't, in this case, the car apply the breaks to the spinning tires and send the power to the tires with the most traction, the ones not on the roller? so shouldnt this car just roll out?
tubik2 2 years ago
this is Haldex czyli elektroniczy system quattro czyli mala porazka
TheDropson 2 years ago
no m8......... fwd lol :D
Ka1Winters 2 years ago
Is this quattro?
Tomiqu 2 years ago
It moved using just the power of the spinning wheels - at some point they gripped. QUATTRO doesnt have Difflock on the axles - it locks two axles separately but it doesnt lock the wheels on each axle separately. So 1 wheel from each axle in the air like this = QUATTRO STUCK. its just the power that moved it.
batonki 2 years ago
No, you're wrong. Quattro has Torsen differential, that locks Axles. Byt EDS locks everything. It can even give all the torque on just one wheel. It usue brakes to block wheels that have no grip. EDS is old system, it was mounted in early 90, but they mounted it together qith quattro in 1995 in A5.
plastman12 2 years ago
it moved beacuse TorSen work in that way, if one wheel have lower grip TorSen starting auto Block differential or auto transwer power to wheel with good grip its depend of type
TorSen can work without any electric or electronic system its completly mechanical and it newer fail thats why is the best
ThatHoodNiggaBrik 2 years ago
@batonki actually you are wrong. With the B5 A4 Audi removed the limited slip differentials so that quattro was a torsen center diff and open front and rear diffs. In place of the limited slips they use EDS to apply brakes to the wheel that is slipping. The only way to strand an AWD car with a torsen diff is to suspend one front and one rear wheel, but with EDS brakes are applied to the spinning wheel and power goes to the other side. Obviously you don't know AWD, cause quattro is the best
travelbytommy 2 years ago
If so, please tell me how is it that an Audi A8 wont move an inch if You put rear wheels in the air or on rollers? The center diff should lock it and send power to the front of the car (and its not doing anything)
batonki 2 years ago
@batonki the problem with testing on rollers is it does not provide any traction, like having the wheels in the air. Even if your car is on ice, it still has traction. A good proof of this is bare rubber ice racing...while traction is limited, there is still an amount of traction. All you would have to do with a car on roller for both rear wheels is apply a small amount of brake, creating the same traction effect as on ice. Torsen differentials are purely mechanical, no electic tricks needed.
travelbytommy 2 years ago
I quess You're right. it sounds about right:) thx. But anyway shouldnt it still apply brakes just like You say? All the electric systems like EDS and so on. Should do it after all to send the power to the front.
batonki 2 years ago
@batonki my understanding of EDS is that it was implemented to replace the locker diff on the rear with open diffs on both the front and rear. I don't believe it was intended to serve as an electronic AWD, but rather to eliminate the bulkiness of early quattro systems. I don't believe there is anything in EDS that would sense a front to rear imbalance and try to correct it. Simply applying a small amount of brake would cause the center diff to transfer power up front, so there is no need.
travelbytommy 2 years ago
travelbytommy - not to nitpick - but again you are partially correct. The EDS/EDL is about sending power side to side (like a rear mechanical lock). Most SUV's that don't have mechanical locks do it now....and so do Subaru sedans. What still sets Quattro apart is the Torsen diff in the center (though the Lexus LS decided to "copy") that senses beforehand and doesn't wait until there is slippage to move torque. Torsen doesn't affect side to side though...
Amidat 2 years ago
nitpicking? I said there was nothing in EDS that went front to rear. With a torsen diff though you do need some resistance on the rear axle to apply power to the front. You can jack up the rear wheels (absolutely zero resistance) of an Audi and the car will idle in gear all day long without going anywhere, but if you apply a small amount of brake pressure then it would fall off the stands.
travelbytommy 2 years ago
@travelbytommy I have a kind of stupid question but i wanna ask you guys this because you sound like you know what your talking about. Why does the the diff send more power up front when you apply the breaks in the rear? wouldn't it be better if it send more power to the rear. to help out the rear if it has to deal with more force? thanks
motorwolrdpl 1 year ago
@motorwolrdpl if you locking rear wheels and center diferential is an open one. then power vill escape to the front wheels. if center diff haz lock upp or limited slip or hydraulic contr. then center diff vill send power to rear whl.
fmyboki892 1 year ago
travelbytommy - partially correct. Quattro never had limited-slip diff. They had heavy duty mechanical locks on the center and rear. Those are great for off-road but they are too heavy. Audi wants it's cars to be more sporty while still all-weather capable. The EDL is similar but doesn't give the capability of a fully mechanical locking diff. In on road cases it's not needed really. Even a Jeep Grand Cherokee no longer has them - (because most Jeep owners don't really go off-road).
Amidat 2 years ago
@Amidat my bad. I knew they weren't always open diffs, I didn't know they were lockers. I just assumed they were LSD. Thanks for the heads up. To me EDL/EDS could have used a bit more braking authority, but on the other side, most people just need to learn how to drive in snow in the first place anyways.
travelbytommy 2 years ago
Yes - I wonder about why the EDL's don't brake with more force - but my guess is that it would wear out the brakes too much (have to replace them too often) and it might make them overheat (unsafe once you get "unstuck"). It's a trade-off. Less maintenance and moving parts. So it means the system is more durable and because it's lighter - the car handles better and gets better fuel economy. The off-road capability wasn't worth it they felt. Again - very few SUV's even have them nowadays
Amidat 2 years ago
jakto?
porsovi 2 years ago
i want Audi A4...
donzaxspeed 3 years ago 2
what year is that?
XkydonX 3 years ago
Oh in the US Audi markets the system as EDL. My bad. I am usually good with the terminology. I love how high school kids are always telling me that the AG in Audi AG and Volkswagen AG stands for "Auto Group", but it really means Aktiengesellschaft. Or the kids that tell me that Quattro GmbH is not Audi's performance shop, but only Audi's AWD system.
Thanks for the heads up.
travelbytommy 3 years ago
I thought Audi's terminology for it was EDL? Electronic Differential Lock. I do know that with the 1998 and later quattro, it is physically impossible to get stuck unless all 4 wheels lose traction. The one exception to this would be like a rock crawling senario where both 1 front and 1 rear wheel are in the air at the same time (and I mean in the air with 0% traction). But who would take their audi rock crawling anyways. Nice work.
Is that sound coming from the car, or the rollers?
travelbytommy 3 years ago
EDS - elektronische differential sperre
hrabialol 3 years ago
EDS is electronic LSD, it brakes the wheel that spins so that the torque is sent to the other wheel.
penalozaur 3 years ago
Looks like simple LSD.
AlexanderA80 4 years ago
and the difference is? :P
solve18 3 years ago