about 30+ years of awd racing tradition in the development of a car u can buy with this kind of technology, brakes, suspension balance, power and transmission. Quite the car, too bad some people are just launching them
I wish I could see a comparison between the nissan gtr awd and other awd systems like quattro,4matic,xdrive .I mean, it would be interesting to see how these awd systems are working in winter conditions .Can you please make a video where you test all of these systems in cornering, moose test and so on ?
Being permanent AWD, Torsen Quattro and xDrive will do better in winter. You can add Subaru to this list as well. ATTESA is designed for aggressive driving... being AWD gives implicit benefits in winter conditions, but that's not the design goal. It was designed for Skyline GT-R, and the only major update to it since the 90s is the current GT-R adding a rear LSD. It's not a winter traction-oriented system... but AWD is still AWD so unless you're climbing an icy mountain it'll probably do the job. You couldn't pay me to use Haldex Quattro or 4Matic... they're reversed ATTESA systems. Use FWD until wheel(s) slip, then transfers power to the rear. As such, they aren't as good for winter as the permanent AWD systems... and not as good for performance as the ATTESA system they mimic.
Great informative video! When you drove the GTR did you really feel when the car was adjusting the ratio between the differencials? And how does all the adjusting done by the ecu affect the cars throttle response? Thanks
Like you videos very much, but remember: In your starts videos (and I agree), the torque distribution 50/50 is only possible with open dif.. If the central clutch is closed, the torque distribution is a function of the friction coeficient in each axel and the torque distribution could go from 0/100 to 100/o (theoretically)
the ATTESA system if i remember correctly allows for split power between the rear left and right tyres during cornering, this was employed only onto the rear diff. And in previous versions found on the R33 and R34. It was measure by the ABS sensors.
You can burn the clutch in a manual transmission car. But... Why doesn't this happen in a differential? Is it cooled somehow, or is it simply not slipping, but rather clamping down instantly?
You can, but it's far less likely to happen. The clutch starts working when the two wheels on a given axle are turning at different speeds and has to work harder as that difference increases. I've seen a diff clutch fail after somebody was doing full-lock donuts for an extended period of time. With normal driving, you simply don't abuse them enough for them to fail. Some are air cooled in the sense that the cover or housing has cooling fins built in, but the majority are not cooled, but just have the gears submerged in diff fluid.
Two reasons. Firstly its engaging when the computer senses a need (at which point both front and back axles are at nearly the same speed) then staying engaged until no longer needed, not constantly slipping all the time. Secondly because it doesn't worry about "feedback" to a driver, its a big multi plate-clutch with aggressive engagement teeth so it can handle a lot more heat buildup and general abuse. People tuning for very high outputs still have trouble with them though, but then again they often also end up changing the rear diff so its not necessarily any weaker than a normal AWD system.
GT-R has ATTESA Pro. Main difference is that GT-R gets an LSD in the rear. The transmission is up front on the Infiniti, but the AWD system basically works the same way ... just no LSD, open diffs in the front and back.
Awesome EE! Can you do the Golf R next? I know it's not the best performance system but not most people don't understand the way it works completely. Myself included. Awesome work btw
This is kinda cool considering that most manufacturers are a front biased system. On my mazdaspeed 6 it's kinda similar it's a Haldex system and it's a front biased system. But great video by the way.
hey, thanks for this video and all the videos on your channel - super-comprehensible, interesting and entertaining can you please make a video about clutch kicking, how it works, what it does and how bad it actually is? i've seen some other videos yet they were not as helpful as your videos are best of luck cheers VM
How dose the clutch pack sending power to the front not ware excessively if it is not clamping fully. Generally allowing a clutch to slip would ware it. Is it a wet clutch?
Wet, lots of plates. Can last a long time even with slip. We used them in the forklift world at my previous job. Our transmission had multi-plate, wet clutches that had lots of slip programmed in, and they would last (almost literally) forever.
Also - the front wheels will still rotate by them selfs, so it's not that much of a speed difference beteween the rear and the front. It won't be as punnishing as if you ride the clutch on the main driving axel. I guess if you launch it it will understand what's happening and lock it fully before the main clutch engage. Maybe it's always engaged from 0? And then disengeages as speed rises?
Seems to be a pretty complex system. I know these cars are in completely different classes, but I wonder how this system compares to that of the new Ford Focus RS. They both appear to be quite sophisticated systems.
they need to make it understeer biased though, shorter wheelbase and other small-car geometry means one little bit of oversteer can turn into a lot of oversteer fast and be difficult to control.
+Engineering Explained Hey Jason, I've had a question for a long time now. And I haven't found any proper response yet. I absolutely love 90ies turbocharged inline 6 engines like the Nissan RB or Toyota JZ engines. The sound is so extremely nice, I watch videos of such engines always when I can. But where I live JDM cars are very rare and expensive. I wanted to go with some old BMW and turbocharge it. But for example turbo'd M50 engines don't sound like the inline 6s I love. Why? 24 valves, around 2.5 to 3.0 displacement,... How do I get a 1JZ sound out of a M50 turbo? Thanks!
can you make a video about hybrid system in audi r18 2016? its mind blowing cause it accelerates 100-200km/hour in under 2secs max speed 320 km/hour(speed limiter)
Can you please explain how does the new focus RS AWD work? What I'm confused about is, whether it has rear diff or just 2 clutch packs sending torque to both rear wheels.
The part with the GT-R on track looks like the driver fell asleep :D Nice explanation of the AWD System. Should have told about the wet and the dry clutch Setups, though.
I've a doubt,if it sends 50/50 torque distribution in the front and rear axles ,how can it even corner at AWD? This a very serious question from my side ,please explain!
That's a weird setup. So the first drive ( connected to the engine) shaft rotate at engine speed since the transmission is in the rear? or do they have a intermediate differential in the front?
can you do a video on air cooled engines and why they are no longer used they were lighter more fuel efficient less complex and less expensive its something that you kind of want in a modern day car so why dump them
It is better than most other AWD cars, exceptions to Audi's AWD and other more expensive systems. Subaru's main benefit with their AWD is that it's a cheap but effective system compared to other manufacturers.
+Amer Muratovic I'm not a fanboy, I own a Subaru and wouldn't ever own an Audi because they are horrible to work on and expensive to repair. All I'm saying is that Quattro AWD is a much more complex and expensive system which allows it to just edge out Subaru's AWD.
sounds similar to the haldex systems only rwd biased. so the best it can do is 50/50? i was watching something on the r8 and it said the r8 can do 100% to front or rear.
Me and my friend are in a convo. The new XDelete has a mod for BMW XDrive that allows to limit the 100% of the front to 50% of the front. If there is an upgraded LSD in the back of an XDrive car, would it not be a similar system (the most similar system 2011 and before) to the Atessa-ETS system?
Everything is electronically controlled several thousand times a second based on a whole range of sensors. The ABS (to detect wheel spin) is the main one, but it also factors in G forces, current weight dist, braking/throttle, etc.
Hello, I was wondering how the system deals with different tire sizes front and rear. I would imagine each axle running the same gear ratio but the front driveshaft would be in a constant state of slip to compensate. Is that how this system works? Thanks
Hi I've got a citroen c4 grand picsso 1.5 auto with a gtc gearbox can you explain how it works and the benefits because it's really good on fuel thanks grate vids
Because its a complicated and heavy way to achieve a good weight balance, adversely effects cabin space and will always rely on computer intervention to regulate oversteer\understeer since when the clutch is fully locked one front and rear wheel will be at the same speed, which isn't possible during a turn without wheel slip. It also makes it hard to get a traditional manual transmission with good feel if you want back seats. Don't get me wrong, I love the GTR, its an amazing car, but "traditional" AWD with a center Diff is simpler, lighter and plenty of cars already get a 50-50 weight bias without the need to move the transmission. On the other hand the GTR does allow you to still get the conventional RWD style burnout or drift, which I think is important for the "Muscle" style marketing Nissan sports cars prefer.
Hamish McGregor yeah i get it, but it'll really help big awd cars with their understeer, given the fact they can adopt a transaxle configuration. it'll definitely give them a much more bully-ish character in the way they express performance, which is something that would go really well with, say, an audi rs6 (but then again the transaxle would make it rather compromised inside).
@@SheepInACart Ok, so a few points to raise here: 1. The clutch pack is very rarely going to fully engage unless traction is especially dire. The system won’t allow itself to send more power than the fronts can handle during hard cornering in normal conditions. 2. A traditional centre diff isn’t capable of sending 100% of the power to the rear, which is crucial during high speed cornering scenarios, low speed agility, and directional changes. 3. There is a much higher level of drivetrain loss in a traditional centre diff setup compared to ATTESSA, since during acceleration at higher speeds, the system can put all of its power into the rear diff and leave the clutch pack disengaged. The centre diff system still has its use cases, but it’s much less suited to the track compared to ATTESSA and similar clutch pack systems.
Everything wears, but you get the wear rate to an acceptable level and it lasts as long as needed. No idea what their estimated life is for the part, but I'm sure they did the math.
How difficult is it to get a job in the world of automotive/mechanical engineering ? I want to either study mechanical engineering or computer science when I am done with school and I know with computer science there are jobs going around but I really don't know about the job availabilities of mechanical engineering.
Check out SAE student competition teams to help you pick a school if you want to go automotive. Look at the different competitions Formula/Baja/Aero/Clean Snow/Supermilage then look at competition results to see if schools you like are doing well (or just if they have a team) because participating in these clubs/orgs help you get jobs and give you an idea of if you like it or not.
Whats the normal tourge split (Im tunning an ae86 AWD drivetrain swap in forza 4 and I want to have the most amount of amount of grip but I either understeer or oversteer) :( current setup 20/0 front 60/50 rear 80% center
Most ATTESA systems are 100% rear under normal driving conditions. I believe GT-R is set to 98% rear. It's designed to oversteer a little (RWD after all), and when AWD kicks in it has some understeer... naturally correcting the oversteer that likely induced wheel spin and triggered AWD to divert power to the front axle.
I would assume 50/50 initially and then through acceleration shift the power to the rear wheels 30/70 mix. With the car accelerating, it should get more grip off the rear than the front. I doubt that it would go to a 0/100 mix ever, but i'm not an engineer just a wrench spinner.
Am I right when I say it all started with the AWD system in the Skyline GT-R R34?? In case of yes you could make a video talking about the dynamics of this one, I think it would be a great video
can it do 1 wheel drive? Like when only one wheel is having traction all other wheels are on ice, the engine would send all its power to the wheel with traction, like all Subarus? if not then its garbage.
Yes it can have all 4 tires receiving different amount of power at the same time how magic. ECU sensors to control power in real time to each and every wheel, depending on the driving conditions. Read more: www.autoevolution.com/news/nissan-gt-r-s-secret-attesa-e-ts-awd-system-explained-35006.html#ixzz4DA8Z7Taq
thay are similar, however Mitsubishi has the best AWD on the planet. Have you seen Engineering Explained - "Mitsubishi Evolution X - How The AWD System Works (S-AWC, ACD, AYC)" ?
I'm surprised they don't have a Torsen Diff or at least something a little bit smarter in the front, the Open Diff seems like a cheap option in an otherwise very expensive driveline. Put a Wavetrac in there Nissan!
+Kristoffer Lilja yea, that is true. Provided the GTR simulates an lsd with its brakes in the same way a P1 does. I just think about how much better my car drove after I put a proper torque basing diff in the front.
Steve Reed Pretty sure it does its nothing complicated. I had a BMW 335i with an open diff that used the brakes to simulate the effects of an LSD and I never noticed a difference. You could do proper powerslides and drifts still
Have you seen Engineering Explained - "Mitsubishi Evolution X - How The AWD System Works (S-AWC, ACD, AYC)" ? Looks like Mitsubishi has done it much better long ago.
GTR IS RWD when just cruising and going straight forward. GTR is not all about speed, but about cornering. Going GTR's speed in RWD car, you would be rolling all over the places and goes down hill
the amazing thing about this system is it came out in 1989. way ahead of its time
Yeppers.. Still used today even in other nissan/infiniti models...
your videos are awesome! i´ve learned a lot more about cars watching them and my english is gettin´ better. thanks for that!
Great to hear, thanks for watching! :)
about 30+ years of awd racing tradition in the development of a car u can buy with this kind of technology, brakes, suspension balance, power and transmission. Quite the car, too bad some people are just launching them
I wish I could see a comparison between the nissan gtr awd and other awd systems like quattro,4matic,xdrive .I mean, it would be interesting to see how these awd systems are working in winter conditions .Can you please make a video where you test all of these systems in cornering, moose test and so on ?
Being permanent AWD, Torsen Quattro and xDrive will do better in winter. You can add Subaru to this list as well.
ATTESA is designed for aggressive driving... being AWD gives implicit benefits in winter conditions, but that's not the design goal. It was designed for Skyline GT-R, and the only major update to it since the 90s is the current GT-R adding a rear LSD. It's not a winter traction-oriented system... but AWD is still AWD so unless you're climbing an icy mountain it'll probably do the job.
You couldn't pay me to use Haldex Quattro or 4Matic... they're reversed ATTESA systems. Use FWD until wheel(s) slip, then transfers power to the rear. As such, they aren't as good for winter as the permanent AWD systems... and not as good for performance as the ATTESA system they mimic.
Great informative video! When you drove the GTR did you really feel when the car was adjusting the ratio between the differencials? And how does all the adjusting done by the ecu affect the cars throttle response? Thanks
Did not feel it, as far as I know the throttle does not change.
+Engineering Explained Can you do a PDK Transmission Video
Great video, i can say it has taught me how a transmission works...
Like you videos very much, but remember: In your starts videos (and I agree), the torque distribution 50/50 is only possible with open dif.. If the central clutch is closed, the torque distribution is a function of the friction coeficient in each axel and the torque distribution could go from 0/100 to 100/o (theoretically)
In a super heavy-duty clutch which has so many plates..
It's impossible to slip this clutch more then 30 - 50 percent so forget about 💯 percent
the ATTESA system if i remember correctly allows for split power between the rear left and right tyres during cornering, this was employed only onto the rear diff. And in previous versions found on the R33 and R34. It was measure by the ABS sensors.
Nice job, Jason! Big fans of you here. Maybe we do how radar and laser works and we'll set you up with a system?
I will be driving the GT-R this Sept with Xtreme Xperience. I have driven a GT3 and a Z06 previously with them and they are great. Thanks for the vid.
Awesome! Such a good time! (use the promo code in the video description if you haven't already!)
Great explanation of a complex system. Well done sir.
atessa awd is so good for cornering
you should make a video on how the transaxle works in cases like the GTR and Corvette and how front mounted transaxle AWD systems work
You can burn the clutch in a manual transmission car. But... Why doesn't this happen in a differential? Is it cooled somehow, or is it simply not slipping, but rather clamping down instantly?
You can, but it's far less likely to happen. The clutch starts working when the two wheels on a given axle are turning at different speeds and has to work harder as that difference increases. I've seen a diff clutch fail after somebody was doing full-lock donuts for an extended period of time. With normal driving, you simply don't abuse them enough for them to fail. Some are air cooled in the sense that the cover or housing has cooling fins built in, but the majority are not cooled, but just have the gears submerged in diff fluid.
Two reasons. Firstly its engaging when the computer senses a need (at which point both front and back axles are at nearly the same speed) then staying engaged until no longer needed, not constantly slipping all the time. Secondly because it doesn't worry about "feedback" to a driver, its a big multi plate-clutch with aggressive engagement teeth so it can handle a lot more heat buildup and general abuse. People tuning for very high outputs still have trouble with them though, but then again they often also end up changing the rear diff so its not necessarily any weaker than a normal AWD system.
I would guess that it a wet clutch like you have in a automatic transmission.... Maybe fitted with a oilcooler
referring to the clutch-pack that sends power to the front...
Thanks for the explanation! To all of you.
good diagram mate, that pic is all I needed.
I'm surprised about the open diff at the front. No wonder the Evo ix is a beast on the circuit.
My stepfather's Infiniti G37X has attesa e-ts, but not the same drivetrain setup as a GTR.
GT-R has ATTESA Pro. Main difference is that GT-R gets an LSD in the rear. The transmission is up front on the Infiniti, but the AWD system basically works the same way ... just no LSD, open diffs in the front and back.
Awesome EE! Can you do the Golf R next? I know it's not the best performance system but not most people don't understand the way it works completely. Myself included. Awesome work btw
This is kinda cool considering that most manufacturers are a front biased system. On my mazdaspeed 6 it's kinda similar it's a Haldex system and it's a front biased system. But great video by the way.
so magic, got it
basically! that's what it feels like when we drive it, not sure what Jason's talking about :)
Great video. Just as a helpful suggestion, have you considered using PowerPoint or something similar instead of a dry erase board?
hey, thanks for this video and all the videos on your channel - super-comprehensible, interesting and entertaining
can you please make a video about clutch kicking, how it works, what it does and how bad it actually is?
i've seen some other videos yet they were not as helpful as your videos are
best of luck
cheers
VM
Dual clutch transmission, shifts smoother than any other $150,000 + cars but horrible noises
Good job Engineering Explained great videos keep doing what ya doing
I heard the ATTESA electronics is very complicated !! nyway as always thanks +Engineering Explained for such an helpful video !!
do you know why RWD to AWD is a better configuration than FWD to AWD? Thanks
Do you do a video about difference between hydraulic steering and power steering and electric power steering?
keep up the good work man
How dose the clutch pack sending power to the front not ware excessively if it is not clamping fully. Generally allowing a clutch to slip would ware it. Is it a wet clutch?
Wet, lots of plates. Can last a long time even with slip. We used them in the forklift world at my previous job. Our transmission had multi-plate, wet clutches that had lots of slip programmed in, and they would last (almost literally) forever.
It is a wet Setup.
Also - the front wheels will still rotate by them selfs, so it's not that much of a speed difference beteween the rear and the front. It won't be as punnishing as if you ride the clutch on the main driving axel. I guess if you launch it it will understand what's happening and lock it fully before the main clutch engage. Maybe it's always engaged from 0? And then disengeages as speed rises?
Seems to be a pretty complex system. I know these cars are in completely different classes, but I wonder how this system compares to that of the new Ford Focus RS. They both appear to be quite sophisticated systems.
Focus RS is front wheel biased system. Just like the one found in many AWD hatches.
[understeer intensifies]
they need to make it understeer biased though, shorter wheelbase and other small-car geometry means one little bit of oversteer can turn into a lot of oversteer fast and be difficult to control.
I always thought that they use some sort of active rear differential, like they did with R33 and R34 GT-Rs.
The diff in the R35 is much better than in the old Skylines. It is newer to be fair, so that's what you'd expect.
+Engineering Explained Hey Jason, I've had a question for a long time now. And I haven't found any proper response yet. I absolutely love 90ies turbocharged inline 6 engines like the Nissan RB or Toyota JZ engines. The sound is so extremely nice, I watch videos of such engines always when I can. But where I live JDM cars are very rare and expensive. I wanted to go with some old BMW and turbocharge it. But for example turbo'd M50 engines don't sound like the inline 6s I love. Why? 24 valves, around 2.5 to 3.0 displacement,... How do I get a 1JZ sound out of a M50 turbo?
Thanks!
You should do a comparison video on how the Lamborghini awd system works!
Probably the same or similarly to Audi's quattro AWD.
Lamborghini is owned by AUDI so expect it to work like an audi quattro system
Except it doesnt. Audis Quattro systsem is permanent 4wd where as Lamborghini uses a Haldex system similar to this in the Nissan
can you make a video about hybrid system in audi r18 2016? its mind blowing cause it accelerates 100-200km/hour in under 2secs max speed 320 km/hour(speed limiter)
I like the way they say it, Nissan in the states. Kneeson
Great video. How does this AWD system compare to Audi's Quattro system?
Are DCT's usually constant-mesh gearboxes, or only in the GT-R, or is that only drawn like that for simplification purposes?
Can you please explain how does the new focus RS AWD work? What I'm confused about is, whether it has rear diff or just 2 clutch packs sending torque to both rear wheels.
+klstrucker930419 it has a torque vectoring differential in the rear. I have a video which partially explains how they work.
Could you do this for Audi Quattro too?
awesome video...directly into the point
If the system is in any state between 0-100 and 50-50, it has some power loss due to clutch slip/heat, right?
looks a lot like the xdrive in my 05 bmw 325xi, or at least my understanding of it, without the mechanical lsd.
The part with the GT-R on track looks like the driver fell asleep :D
Nice explanation of the AWD System. Should have told about the wet and the dry clutch Setups, though.
He talks about this with another commenter. join them in the convo if you get the chance.
I've a doubt,if it sends 50/50 torque distribution in the front and rear axles ,how can it even corner at AWD? This a very serious question from my side ,please explain!
That's a weird setup. So the first drive ( connected to the engine) shaft rotate at engine speed since the transmission is in the rear? or do they have a intermediate differential in the front?
can you do a video on air cooled engines and why they are no longer used they were lighter more fuel efficient less complex and less expensive its something that you kind of want in a modern day car so why dump them
I think think is the same as the g35x awd system.
i want to see how does the subaru AWD system work? why its win all other AWD cars?
He already made a video about the subaru awd
it is not better than other awd cars
It is better than most other AWD cars, exceptions to Audi's AWD and other more expensive systems. Subaru's main benefit with their AWD is that it's a cheap but effective system compared to other manufacturers.
Thank you :)
+Amer Muratovic I'm not a fanboy, I own a Subaru and wouldn't ever own an Audi because they are horrible to work on and expensive to repair. All I'm saying is that Quattro AWD is a much more complex and expensive system which allows it to just edge out Subaru's AWD.
Any chance you could do a video on how the regen works on diesel trucks?
Just like a complicated Austin Champ
yayyy I asked for this video! Although, at this point I already knew most of it...
sounds similar to the haldex systems only rwd biased. so the best it can do is 50/50?
i was watching something on the r8 and it said the r8 can do 100% to front or rear.
Nice video. I've just started car spotting on my RUclips channel. Found a Porsche 918
Holy complexity Batman. That's a lot of parts to fail.
+Shane Broussard and yet for their capability they're incredibly reliable vehicles.
Me and my friend are in a convo. The new XDelete has a mod for BMW XDrive that allows to limit the 100% of the front to 50% of the front. If there is an upgraded LSD in the back of an XDrive car, would it not be a similar system (the most similar system 2011 and before) to the Atessa-ETS system?
Would having a Torsen or helical LSD in the front help with corner exit grip?
Does the 4 wheel drive activated in the system or we hav to activate it manually?
Everything is electronically controlled several thousand times a second based on a whole range of sensors. The ABS (to detect wheel spin) is the main one, but it also factors in G forces, current weight dist, braking/throttle, etc.
Hello, I was wondering how the system deals with different tire sizes front and rear. I would imagine each axle running the same gear ratio but the front driveshaft would be in a constant state of slip to compensate. Is that how this system works? Thanks
nice doodle!
what year is this? 21st century?
Hi I've got a citroen c4
grand picsso 1.5 auto with a gtc gearbox can you explain how it works and the benefits because it's really good on fuel thanks grate vids
still wonder why no other car manufacturer uses systems similar to this, for a front engined car it's just the best in terms of performance
Probably costs.
Because its a complicated and heavy way to achieve a good weight balance, adversely effects cabin space and will always rely on computer intervention to regulate oversteer\understeer since when the clutch is fully locked one front and rear wheel will be at the same speed, which isn't possible during a turn without wheel slip. It also makes it hard to get a traditional manual transmission with good feel if you want back seats.
Don't get me wrong, I love the GTR, its an amazing car, but "traditional" AWD with a center Diff is simpler, lighter and plenty of cars already get a 50-50 weight bias without the need to move the transmission. On the other hand the GTR does allow you to still get the conventional RWD style burnout or drift, which I think is important for the "Muscle" style marketing Nissan sports cars prefer.
Hamish McGregor yeah i get it, but it'll really help big awd cars with their understeer, given the fact they can adopt a transaxle configuration. it'll definitely give them a much more bully-ish character in the way they express performance, which is something that would go really well with, say, an audi rs6 (but then again the transaxle would make it rather compromised inside).
@@SheepInACart Ok, so a few points to raise here:
1. The clutch pack is very rarely going to fully engage unless traction is especially dire. The system won’t allow itself to send more power than the fronts can handle during hard cornering in normal conditions.
2. A traditional centre diff isn’t capable of sending 100% of the power to the rear, which is crucial during high speed cornering scenarios, low speed agility, and directional changes.
3. There is a much higher level of drivetrain loss in a traditional centre diff setup compared to ATTESSA, since during acceleration at higher speeds, the system can put all of its power into the rear diff and leave the clutch pack disengaged.
The centre diff system still has its use cases, but it’s much less suited to the track compared to ATTESSA and similar clutch pack systems.
as far as how it distributes the power to the front wheels.
thanks for this explanation.
Awesome video
My favourite AWD system :)
Great Video!
if your gears were transmitted like that wouldnt the diff have the same revs no matter what gear you re actually in?
I prefer the awd system that the nsx use
Great explanation as usual!
Please talk about 911 turbo s
A video abt. Infinitely Variable Transmission - D-Drive?
Does that mean the AWD system can't shuffle the torque between two wheels on the same axle (Torque vectoring?).
+TheAsemAlkhatib it can with brakes, but not with the differentials, correct.
+TheAsemAlkhatib it can with brakes, but not with the differentials, correct.
+Engineering Explained
Thanks for replying, made my day!!
do the clutch packs not wear? +Engineering Explained
Everything wears, but you get the wear rate to an acceptable level and it lasts as long as needed. No idea what their estimated life is for the part, but I'm sure they did the math.
What's the VDC mode in GT-R? Does the ATTESA E-TS mode affects it?
Nice, that's my home track!!!
Or at least a roller test, to see how this awd system is responding
how is the transmission at the rear axle instead of besides the engine?
How difficult is it to get a job in the world of automotive/mechanical engineering ? I want to either study mechanical engineering or computer science when I am done with school and I know with computer science there are jobs going around but I really don't know about the job availabilities of mechanical engineering.
hard to even get degree
Check out SAE student competition teams to help you pick a school if you want to go automotive. Look at the different competitions Formula/Baja/Aero/Clean Snow/Supermilage then look at competition results to see if schools you like are doing well (or just if they have a team) because participating in these clubs/orgs help you get jobs and give you an idea of if you like it or not.
You dont need a degree to work on cars,open a garage and be better then most suposed engineers ;)
"than"
On off the best awd. Subaru. Porsch
Evo comes to mind...
The AWD explanation sounds similar to the Nissan Rogue... 🤨And all this time I thought these cars were Full-time permanent AWD
@Engineering Explained which sports/supercar have the best AWD system ? Is the GT-R's system on par or better or worse ?
Great ?
Whats the normal tourge split (Im tunning an ae86 AWD drivetrain swap in forza 4 and I want to have the most amount of amount of grip but I either understeer or oversteer) :(
current setup
20/0 front 60/50 rear 80% center
Most ATTESA systems are 100% rear under normal driving conditions. I believe GT-R is set to 98% rear.
It's designed to oversteer a little (RWD after all), and when AWD kicks in it has some understeer... naturally correcting the oversteer that likely induced wheel spin and triggered AWD to divert power to the front axle.
so on launch control what is it, 50/50?
I would assume 50/50 initially and then through acceleration shift the power to the rear wheels 30/70 mix. With the car accelerating, it should get more grip off the rear than the front. I doubt that it would go to a 0/100 mix ever, but i'm not an engineer just a wrench spinner.
Am I right when I say it all started with the AWD system in the Skyline GT-R R34?? In case of yes you could make a video talking about the dynamics of this one, I think it would be a great video
Rafael Cerqueira i believe it actually was the r32 skyline
no0thanks i knew it was BNR32 Cause i heard it in wangan midnight anime where the characters usually said Attesa Ets
it is a bit like an evolve traction control isn't it ??
Complicated, but cool
nice vid
nice , but its an old version of gtr not modern , right ?!
this is the GR6, it's for the current R35.
Nope, its modern.
+Hamish McGregor I meant not the 2008 version "8 years old ! " because they look the same .
+wael Auto.Eng.student nope that is a 2015-2016 GTR
Can you trick the GTR to drift when the front tires are nearly worn out?
You'd probably want it the other way around? Keep the front planted, while the rear slides, so you want the rears to be bold.
IIRC, you pull the fuse for the AWD clutch pack. Maybe that was just for the R34?
You can drift the GT-R, even on Semislicks in the dry. You just need a capable driver and need to select track mode and deactivate ESP.
that worked just on the AWD R32s, the pulling the fuse trick.
can it do 1 wheel drive? Like when only one wheel is having traction all other wheels are on ice, the engine would send all its power to the wheel with traction, like all Subarus? if not then its garbage.
Yes it can have all 4 tires receiving different amount of power at the same time how magic. ECU sensors to control power in real time to each and every wheel, depending on the driving conditions.
Read more: www.autoevolution.com/news/nissan-gt-r-s-secret-attesa-e-ts-awd-system-explained-35006.html#ixzz4DA8Z7Taq
Damn... So Nissan GT-R is... Closest to the KITT? It honestly wouldn't surprise me if next GTR had voice modulator.
Current R35 model DOES have voice recognition built in
is it better than quattro or xDrive?
thay are similar, however Mitsubishi has the best AWD on the planet. Have you seen Engineering Explained - "Mitsubishi Evolution X - How The AWD System Works (S-AWC, ACD, AYC)" ?
I think R33 V-spec/R34 V-spec (ll) ATTESA ET-S PRO and VW 4 Motion is best
At 2:38 "1.5 in the back" - what does it mean?
1.5 to 1 is the maximum relative speed difference between left and right wheel
So in a normal (not molesting) drive would this mostly revert to RWD?
Its pretty much an adaptive AWD system that is only used when required which is the secret to the GTR's awesome handling.
I'm surprised they don't have a Torsen Diff or at least something a little bit smarter in the front, the Open Diff seems like a cheap option in an otherwise very expensive driveline. Put a Wavetrac in there Nissan!
The Mclaren P1 has an open diff in the rear. Just FYI
+Kristoffer Lilja yea, that is true. Provided the GTR simulates an lsd with its brakes in the same way a P1 does. I just think about how much better my car drove after I put a proper torque basing diff in the front.
Steve Reed Pretty sure it does its nothing complicated. I had a BMW 335i with an open diff that used the brakes to simulate the effects of an LSD and I never noticed a difference. You could do proper powerslides and drifts still
+Kristoffer Lilja yea and the proof is in the pudding with the GTR. They obviously chose that path for a reason.
Have you seen Engineering Explained - "Mitsubishi Evolution X - How The AWD System Works (S-AWC, ACD, AYC)" ?
Looks like Mitsubishi has done it much better long ago.
Just like the PTO on my John Deere.
nissan should not have called this R35. it does not deserve association with the Skyline.
can it do a burnout?
Nissan should really consider putting a RWD button on gtr, Because WHY NOT!
GTR IS RWD when just cruising and going straight forward. GTR is not all about speed, but about cornering. Going GTR's speed in RWD car, you would be rolling all over the places and goes down hill
How can I get in touch with you? @Engineering Explained
You cant