How Every Single Modern Subaru AWD System Works

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How All Four Of Subaru's AWD Systems Work
What's The Best AWD System - • What Is The Best AWD S...
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Subaru currently has four different AWD systems:
1. Viscous Coupling Center Differential AWD
2. Active Torque Split AWD
3. Variable Torque Distribution AWD
4. Driver Controlled Center Differential (DCCD) AWD
Descriptions Below From The Following Link:
www.subaru.ca/WebPage.aspx?We...
1. Viscous Coupling Center Differential AWD
"This system is used for all models equipped with manual transmissions, excluding the WRX STI. It delivers the sporty satisfaction of quick shifts combined with an AWD system that makes the most of the available traction at all times. This system also features an efficient layout with a viscous-coupling limited slip centre differential that maintains a 50/50 front/rear torque split for optimum torque distribution, near neutral handling and surefooted performance."
2. Active Torque Split AWD
"This system employs a multi-plate transfer clutch that maintains a 60/40 front/rear torque split and uses a range of sensors to automatically adjust this split on-the-fly as conditions warrant, creating more predictable handling. The system that's linked to all Subaru models (excluding WRX) equipped with the Lineartronic® Continuously Variable Transmission (CVT), the Active Torque Split AWD places the focus on ease of operation, fuel efficiency and reliability."
3. Variable Torque Distribution AWD
"Linked to the Sport Lineartronic® CVT and exclusive to the WRX, this AWD system delivers sportier performance and superior efficiency all at once. The centre differential adjusts front/rear torque split from 45/55 in normal conditions (for a sportier rear-biased feel) up to 50/50 when the weather worsens or the road conditions deteriorate (for maximum traction). The viscous self-locking rear differential maintains stability when more torque is sent to the rear wheels, ensuring the perfect balance of control and fun."
4. Driver Controlled Center Differential (DCCD) AWD
"As it's a purebred high-performance car, it follows that the Subaru WRX STI would feature the ultimate in high-performance AWD systems. The DCCD allows the driver to adjust the centre differential locking (through one manual and three automatic modes), varying the torque split from 41/59 front/rear to 50/50 to suit the mood and the conditions. The AWD system also includes a helical-type front differential and a TORSEN® rear differential, creating a triple-differential set-up that is completely unique in the industry."
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4 июл 2017

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Комментарии : 1,2 тыс.

@metaomicron72 7 лет назад

How to teach in 2017 by Jason: "Get a huge board get a stool with wheels so you can drift while you teach"

@ckali8546 7 лет назад

I'm 14 and I started watching you when I was 12, despite all of this knowledge is over me, I like to think I know the basics of what you are talking and I have gained a head start! I'd like to say thank you for teaching me! ❤️🚙

@EngineeringExplained 7 лет назад

That's great, good on you starting to learn young!

@jbirdwis 7 лет назад

Backfired V7 keep watching this stuff. Especially if you want to go into a technical field when you're older.

@ckali8546 7 лет назад

Engineering Explained and Jason Moede, thank you for giving me feedback! I really appreciate that! And keep it up EE! ❤️🚙

@PolarArctica 7 лет назад

Jason's videos are extremely helpful, even if you're not going into an automotive career. If you love cars as much as I do, this channel is a must. I've learned more than I thought I would subscribing to my main man Jason.

@ckali8546 7 лет назад

I have now watched this video atleased 5 times reading these comments! Thank you for the likes and replies. It really means something to me! ❤️🔰🚙

@markusdd5 7 лет назад

As an engineer, I wished I always would have the same skills as you to explain things to people. Great video once again.

@davidbentley6399 7 лет назад

THANK YOU!!!! I have a 2014 XV Crosstrek Hybrid and it's my first Subaru. I've understood their AWD at the basic level but really enjoy having it explained thoroughly like this!!

@metaomicron72 7 лет назад

White board upgrade? He going big boiz! Get all those facts on a HUGE slick white board!

@EngineeringExplained 7 лет назад

It's been around a bit, but my garage is usually either freezing or 100 degrees, so I don't post often with it. So much space though, it's great! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-v3QxsJRNigs.html

@tropicaltanktv 7 лет назад

Move that bad boy inside. :)

@Maxwell1989 7 лет назад

Engineering Explained can you review the Nissan intelligent all-wheel drive that's on Rogue SUV and also the new CR-V updated all wheel drive system please and thank you warmest Aloha from the Big Island

@robertbarber9537 5 лет назад

It's because I love to learn about vehicles is why this is one of my favorite channels of all time!

@knockbeforeyouenter 7 лет назад

Wow! I thought i learned about STI transmission in sex-ed. Thanks Jason!

@ttguitarnoob 4 года назад

It's a little different when you have LSD involved

@TheRguru1 4 года назад

It was pretty viscous alright!

@G_____ 4 года назад

such an underrated comment

@gameface6091 4 года назад

@@ttguitarnoob Even more so when you have the LDS involved...

@tjlovesrachel 4 года назад

harley in my day they were called std’s

@sealgraffit 7 лет назад

That's a big white board you've got right there.

@crackedemerald4930 7 лет назад

Alberto Llinares or he shrunk

@colindavis5250 7 лет назад

Pedro Rocha i think the shrunken option is more realistic

@nermket4849 7 лет назад

he should make a video about how his shrinkray works

@kowasumono 7 лет назад

I think he's gradually sizing up so we don't notice it as much. haha.

@jhuntosgarage 7 лет назад

Lol!

@bensullivan420 5 лет назад

Not gonna lie, your videos have made me fall in love with my Subaru. My dad got the exact same Subaru as you (2017 Crosstrek w/ manual transmission) and at first, I was not a huge fan of it, but now that I've watched so many of your videos, I understand what's behind all of it and why it actually is such a good car. Learned to drive stick on it, and damn, I love driving it!

@QactisX Год назад

After STI and WRX the Crosstrek is the best in my opinion

@matt_b... 7 лет назад

Yes, it has been enlightening! From a sensor and software perspective, it would be great to get a high level overview on how the control modules sense and react to different road scenarios.

@ejhayes76 6 лет назад

I've been driving Subarus for ~15 years, both manuals and CVT. This was great. I knew about the 50/50 and 60/40 but not the details of why and how. Thanks for sharing!!

@kurtarevalo7055 7 лет назад

Every time I come up with a question in my head you literally upload a vid answering that specific question a few days later... it's happened at least three times now it's like you're a mind reader

@paulmarsdensr1095 3 года назад

I never knew there was a difference in all of these AWD systems. Great Information.

@kamenpaskalev8831 6 лет назад

Another great video! Thank you! The way you employ basic physics to explain automobile technologies is Great! Just one suggestion related to Subaru AWD - the central differential and the MPC work in parallel (not in series) in the VTD and the DCCD. That is an important part of their operation principle. I would love to see a separate video that compares WRX manual vs. CVT in terms of transmissions ( Torque converter vs. clutch; CVT vs. fixed gears; VTD vs. LSD) - theoretical advantages and technical limitations. Thanks again!

@dayyandayyandayyan 6 лет назад

Fantastic overview of the four AWD systems, thank you so much. Sadly, accurate in-depth information delivered in a fashion that can be digested by the common man is hard to find; you however have nailed it - well done.

@diegosoriavivas 3 года назад

Mate, what a great explanation, thank you very much. All the questions I had, all of them solved at once. You constantly do a great job with this channel.

@playgroundchooser 7 лет назад

I have a 2013 Outback with the 6 cyl engine. At least at that time, the cvt transmission wasn't available with the bigger engine. I'm not sure what awd version I have, but it's a beast. My car will climb a tree of I ask it to. It has even replaced my truck as my primary vehicle for deep backcountry snowboarding expeditions. Crazy!

@afcgeo882 6 лет назад

You have an older system that was mated to automatic trannies. It was older, but better and could do 20:80 splits if needed.

@jimn.9990 4 года назад

I also have the 5 speed automatic and 6 cyiinder engine in my 2013 Tribeca, so we share the marvelously designed VTD (Variable Torque Distribution) system that was wonderfully illustrated by Jason as his 3rd example on his whiteboard, which distributes power 45% to the front differential and 55% to the rear limited slip differential, with the ability to to transfer additional power to either axle that requires it (via the Electronic Hydraulic Transfer Clutch). The system provides incredible traction in the ice and snow!

@Buc_Stops_Here 7 лет назад

Thanks, always wondered what AWD system my Subaru uses. Now I know it uses the Variable Torque Distribution (VDT) as I have a 5 speed automatic on my Legacy H6.

@brad08stanggt 7 лет назад

Great video! Thanks for explaining all of the Subaru AWD systems. It might be helpful to note that all Subaru models with the "winter weather package" from the factory (front wiper defroster/deicer, heated seats, winter mats, and defrosting/defogging mirrors) are also equipped with limited slip rear differentials. As far as I know, this has been the case for a long time and applies to all models/trims/transmissions.

@vincentbroms667 7 лет назад

Finally, was waiting for this. Now we just need some more in-depth videos with these systems. It's not all clear which direction power is sent by default with and without clutch lockup.

@paulfoo7397 7 лет назад

Aww man, thank you so much for always doing your best in your videos!

@snowman0008 7 лет назад

Viscous in mine and totally satisfied.

@jovandjukic5923 4 года назад

What subi do you have?

@snowman0008 4 года назад

@@jovandjukic5923 Had a XV 2.0i with MT. Switched to A4 3.2 FSI MT with quattro...needed more power...

@jovandjukic5923 4 года назад

@@snowman0008 yep, understand :) both awd system are good :)

@user-JamesBond 6 лет назад

Thank you. Finally someone has explained the different AWD systems of Subaru. Excellent job.

@rexbk09 7 лет назад

Thanks for sharing! Got a 2017 WRX with about 5800 miles. 10 month owner and LOVE.

@mlodyme3675 7 лет назад

Could you do reviews of other manufacturer's AWD systems, like Honda/Acura, BMW, Audi/VW, Mercedes, toyota/Lexus and few others? It would be great to really know and understand how they all work

@IBERIUS 7 лет назад

This was amazing please do something similar to different AWD systems between manufacturers like Audi, Mercedes, BMW, Acura, Mitsubishi, Ford, VW...

@FearOfDeath1332 7 лет назад

Vitor H. Sá most are part time awd, subaru is true awd

@frankdn109 7 лет назад

Audi's Quattro is full time, at least it was on my '98 A4. That car's system was like #1 on the left above, except the center diff was a Torsen, not a viscous coupling. And, it was wonderful in snow.

@afcgeo882 6 лет назад

There is no such concept as part-time or full-time AWD. These concepts were developed for 4WD systems, not AWD. All AWD are full-time as they are regulated by the computer at all times. Their torque splits may be varied, even to 0 to an axle, if that's what's best at times, but the system is on 100% of the time. Part-time 4WD systems required the driver to manually engage the system for it to work. Full-time systems were always on.

@GiordanDiodato 3 года назад

the Quattro is similar to the VTD system.

@jeffreyxing7177 Год назад

I've been looking for this information for a while now, thanks so much! I've got a WRX CVT and I knew the diff setup was different from the manual version, but this video is the only coherent explanation I've found so far.

@MrWilliam.Stewart 7 лет назад

Jason is torquing us through the different systems. Another entertaining video, thank you :)

@marcusaguilerax24 6 лет назад

Do a video on Hondas current AWD systems just like you did this video. Awesome content! Btw I have an s2k also

@chazlyle41 4 года назад

Pretty simple.. it’s never on ha. Only after slip at slow speeds. As soon as you hit road speeds not so much. Honda’s are arguably the best 2wd cars out there. Toyota for 4x4. But Subaru is the way to go if you actually need AWD.

@emjayay 4 года назад

@@chazlyle41 At least a couple of years ago if your Honda AWD was trying to start up a slippery icy driveway the front wheels would just spin and the back wheels on the street would do nothing.

@MatkoSniper 6 лет назад

According to my knowledge, some of the older Foresters (2005 for example) had rear LSD differential

@69InchLemur 4 года назад

Yeah a lot of the old ones had viscous lsd in the rear. My 97 Outback does, Forester S models do after 2000 and others that I don't know off the top of my head. Easy way to check is get both rears in the air and spin one tire, if they go in opposite directions it's open, both in the same direction it's lsd

@javiersira6323 7 лет назад

you know it's going to be an awesome video when the board is this huge!

@ankursharma8624 7 лет назад

This was very much enlightening. Especially your thought about how the torque split can change vs. what Subaru describes as 50/50.

@ernodios 7 лет назад

now QUATTRO please! or quattro vs 4matic vs xdrive vs 4motion

@finneycent83 7 лет назад

Yoseob Yang Quattro and 4motion have 2 different systems and now a 3rd with the new S4 coming out

@ernodios 7 лет назад

Andrew Finney then it makes even more sense to do a comparison isnt it?

@gedasalekveravicius5466 7 лет назад

Yoseob Yang All of them

@zanzabar4ky7 7 лет назад

he already did a video on torsen (real quattro is just a torsen,) and he already did haldex (4motion.) 4matic and xdrive work the same as haldex but some times are front first and some times rear first. those have no dedicated systems for the branding.

@KarelKannel 7 лет назад

Xdrive seems to be similar to number 2, ATS. ATS type might be most common in industry. Quite cheap and with good control electronics and sensors and software very good. Quattro is now mostly trademark for all Audi 4 wheel drive systems. Original loved torsen is now used less, mostly is similar to ATS, but they disengage driveshaft from differential too, so wheel do not spend energy to rotate that for nothing. Actually I think this does not save much as it only few bearings friction reduced.

@johnwestland5956 7 лет назад

06-08 Legacy spec.B had the DCCD system. Well thought out good explanation EE!

@americanball_2841 5 лет назад

No it doesn't. It has the same awd system as the wrx.

@ouch1011 4 года назад

Spec B has the same 6spd trans case as the sti but different gear ratios and no front LSD or DCCD. It uses the viscous coupling like the 5spd manu

@jenniferwhitewolf3784 7 лет назад

thanks! Been thinking about buying a pre-owned Subaru lately, as my Vette is useless when it snows... this helps understand the various systems.. very good!

@paulmarsdensr1095 3 года назад

Simply awesome. I love my 2017 base model WRX. I love Subaru vehicles period. Great videos and stay safe brother 🙏.

@toninipk 7 лет назад

Honey, I shrunk the engineer

@T1mok 7 лет назад

Also viscous doesnt wear out, clutches do. But it doesnt last forever eather, it just locks up when its too old.

@RazgrizNinjaEX8 7 лет назад

T1mok They usually go open with age and miles. I'm lucky that my H6 Outback VLSD works.

@jkxss 7 лет назад

Informative as always. Appreciate the 1440p as well. Thank you!

@grimey5.565 5 лет назад

I love your videos man. I don't care what anyone says. You are super knowledgeable and I appreciate it. You have helped me learn the basic Foundation of how engines transmissions and other things work. Thanks. Love the 3D models helps a lot to give you an idea how it all works.

@EngineeringExplained 5 лет назад

Glad you enjoy them, thanks for watching! :)

@CharlieK92004 7 лет назад

What about my old subi wagon? It was a great design. Manual trans, front wheel drive, with shift on the fly 4wd, and a true 2 speed transfer case low range. Maybe I'm just old school, but I would take that over any of the new systems.

@JoKeR1603 7 лет назад

could you do this for mitsubishi? I have always wanted a lancer evolution and would love an engineers explanation of the systems they use

@NuclearBird1 7 лет назад

He already has.

@EngineeringExplained 7 лет назад

Here ya go! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-h2Ojw8lCZX4.html

@JoKeR1603 7 лет назад

Dóka Bence this is what I get for commenting while half asleep >_

@JoKeR1603 7 лет назад

Engineering Explained thank you ^_^

@xynurse6095 7 лет назад

Engineering Explained the dccd allows complete lock. it's my understanding thats only good for off-road/ rally. when would I use the 1- 5 bars on the dccd vs leave it in auto? since the dccd is a clutch pack can the AWD system disengage the rear like a haldex unit?

@Starkiller12481 8 месяцев назад

Great video Jason! I would love to hear about all the AWD setups in their own respective videos to cover each version. Haldex Gen 1-5, Attesa Variants, Xdrive. One question I’ve always had was which types of couplers they each use and what differential setups are involved. It’d be a great series!

@gwot 5 лет назад

I only really appreciate my STi's AWD when it's on snow, it really does help the car go, and stay on course and it fixes it's understeer (more like me going too fast on snow at a turn) by kicking the rear out. When I feel the car pivot back and forth and with minimal steering input and constant throttle, the car stays straight. LOVE IT!

@aussie.gaijin 7 лет назад

the whiteboard gets an upgrade :D

@christate3523 7 лет назад

Worth noting that the Aus spec WRX has a rear LSD... no idea why, but im happy to get it

@cbb8991 6 лет назад

Chris Tate My 04 USDM FXT has LSD in the rear as WELL, he didn't cover that .

@afcgeo882 6 лет назад

ALL WRXs have a limited slip diff in the rear. WRX STi have limited slip diffs in front and rear.

@beastman.330 3 года назад

I'm glad that you are always talking about cars and it's machanics.

@dc236 6 лет назад

Thanks again! Your videos are always easy to follow and understand! Thanks to you, I have learned more about my cars and learned more new driving techniques, thank you thank you thank you!

@The.JZA. 7 лет назад

Why do they use open rear differentials? My 2004 Legacy 3.0R has a limited slip rear diff, electronically controlled variable centre diff capable of up to 80:20 torque split both ways (VTD: Variable Torque Distribution) and has VDC: Vehicle Dynamics Control which brakes individual wheels as necessary to reduce wheel slip and improve stability when cornering hard by slightly braking the inside wheels. It seems like my 13 years old Subaru has a better AWD system than all of the new Subarus bar the STI WRX. Is that right? It's a shame if that's the case.

@pikepeak1 6 лет назад

business is business, most manifacturers donwgraded mecanical component in exchange for electronic guizmo which on a markerting point of view is currently more exiting than a torsen diff. Your car was better 4 sure but now you can get eyesight which almost drive for you....

@afcgeo882 6 лет назад

Your 13 year old Subaru in fact does have a better system because it is a much more expensive car. The non-R Legacies don't have such great systems. It's all an issue of cost savings. Does your car have a physical limited slip differential or is it electronic (which is really just a traction control system.) It seems you use a ton of Subaru terminology, but not really sure of what they do. The Vehicle Dynamics Control system is simply a traction control system integrated into turns. It is now called Torque Vectoring, but is really just active traction control. Acura is the only company that employs actual torque vectoring where they alter the amount of torque sent to each wheel in turns by adding torque. What sets your Subaru from today's systems is the 80:20 differential. Today's Subaru's mostly give you a 40:60 to 60:40 split. Too bad people today don't know that and think they're still getting something good. They aren't anymore.

@dirkdaddy2 6 лет назад

I understand what you said but the electronic versions are simpler in some respects and work well. We needed a car get up the mountain to go snowboarding, older Subarus had head gasket issues and wife wanted a newer car, we got 14 outback used. I put snows on it to meet local laws on mountain passes and its unstoppable, even with the electronic system and open diffs. It feels bolted to the ground and one has to really try to get it to spin or slide with snow tires. The AWD on the newer Hyundai's are also very similar use a electronic clutch to actively engage rear based on anticipation (like you floor it from a stop). this Subaru system does spin the front tires about 1/3 of a rotation or less from like a start - probably for MPG concerns about drag on the driveline. But we're getting mid 20's MPG and great traction so can't complain.

@SwapnilNimbalkar 7 лет назад

So they gave you that big white board first?

@bethankfull972 3 года назад

Instead of Green Screen indeed

@smrts 7 лет назад

I like that you explained the wizardry subaru claims with the active all wheel drive because I have wondered about that since getting a forester how they make good on the claim that "it doesn't need to lose traction before taking action"

@warshrike666 7 лет назад

Thanks mate i just bought a liberty. Your video taught me a lot about whats going on in the car while i am driving. :)

@ericschaub303 7 лет назад

As always great video. Could you do a more detailed video of the DCCD and AWD on the 2015 STI. I'm trying to understand more how it works so I can use the correct setting for auto cross. Most people say to just leave it in auto but sometimes I it feels better to me in manual with a few clicks up.You mentioned its not really a 50/50 lock and sends power to the axle that is not slipping; would this mean if I was lifting a rear wheel (which makes the Tosen type rear diff send all the power to the wheel in the air unfortunately) and the DCCD was in manual it would send the power to the front axle when the rear has a wheel up? Recently changed my suspension and now have less droop and body roll and having a problem keeping the rear planted.

@bn6128 Год назад

Think of dccd as a mechanical centre diff lock on big 4wds. Landcruisers for example 3 diffs, front, centre, rear. Most have a centre lock, some can lock centre and rear and some can lock all 3. The dccd is a tour centre diff lock but as opposed to the Landcruiser being either om or off, your dccd can vary anywhere between being an open diff (0%) to complete centre diff lock (100%)

@bn6128 Год назад

Hence if you drive your sti on. Sealed surfaces with dccd on 100% lock, it'll blow up from too much bind

@XxRuso98xX 7 лет назад

Torsion vs helical LSD should be your next video

@chunhaylee 5 лет назад

Yeah. I've always assumed they are one and the same.

@emjayay 4 года назад

You meant Torsen, not Torsion. Torsen = the viscous diff on #1. Yes, Jason should do a video on that. They are completely different.

@GroovesAndLands 4 года назад

@@emjayay Torsen diffs are not viscous. There are good youtube videos depicting how Torsens work. Very clever unit. Good thing the world didn't wait for me to invent it...

@thomasl9339 7 лет назад

I bought an 06 impreza manual just last week. Can't wait for this winter to test its awd in the snow :)

@Spook_1994 9 месяцев назад

Great opening with whiteboard in back, you had me at "Hello Everyone!" 👍😀

@Saber-2 7 лет назад

My dog enjoyed this video. I am both amused and a bit freaked out.

@KDD8 4 года назад

I came here with the intent on learning how Subaru's awd system works, and left as a youtube certified subaru sales man.

@kevinparris4929 4 года назад

Lml

@JoshuaTootell 3 года назад

Probably know more than most salesman already

@saccaed 5 лет назад

I love a video that starts with all the info I wanted to see.

@qwe14205 2 года назад

Last thing that you said about media making misleading statements is absolutely true, I've heard that from many reputable journalist; It looks like they do not even have any idea that locked diff gives variable torque to each axle and open didd is the one with 50/50 split.

@racerx00 7 лет назад

Didn't Subaru switch to a fully electric center dif on the 2018 STI?

@EngineeringExplained 7 лет назад

Yes that's what their press kit says. Not sure on what the actual difference is, perhaps just eliminated the second mechanical LSD in the center.

@christianherrero9348 7 лет назад

for ATS and VTD, is that essentially torque vectoring but front to rear instead of side to side ???

@Car_Tism 7 лет назад

Yup! Came to the comment section to say that.

@802Garage 7 лет назад

"The DCCD system, which previously used a combination of mechanical and electronic center limited slip differential control, now uses electronic control for quicker and smoother response." - Subaru Press Release

@bobhope4288 7 лет назад

The stock Impreza muffler is made by 5M?!?! Fancy, I could only afford one made by 3M.

@darrylbob4088 5 лет назад

lol old one

@bernardhossmoto 7 лет назад

I bet the traction of the STI system is insane. Sounds super cool!

@Tielc 7 лет назад

I really like the breakdown. Would be cool to see the same thing for the Jeep lineup as they also have varying degrees of 4WD on their vehicles from basic limited slip, to break controlled, to full electronic locking differentials on the Rubicon.

@ndk2k4 6 лет назад

Can you do a video like this for the ATESSA ET-S system variations used in the Infiniti g35, g37, R34GT-R, R35GT-R, etc.

@kern417 7 лет назад

how do companies choose the f/r split that they want to go with? and why can't more cars send 75%+ in either direction?

@niuhuskieguy 7 лет назад

kern417 In most AWD designs, the power that goes to the rear axle is provided by the front axle, so the rear wheels cannot turn faster than the front without something additional hardware.

@kern417 7 лет назад

That does make sense. But weird that most companies start 50/50 and go up to 60/40. Never understood that.

@jjr007 6 лет назад

Probably to make the car safer, in the snow you would get under steer, causing the car to plow, where as if you had more power in the rear it would over steer, possibly sending the car into a spin.

@afcgeo882 6 лет назад

There are actually plenty of vehicles that have a rear bias and vehicles that can create a rear bias. The Ford Kuga/Escape and Jeep Cherokee for example, normally send 100% of torque to the front, but given front slippage, increase the rear torque until either the slippage is gone or they send 100% of torque to the rear. German performance cars like BMW and Mercedes are rear-biased for performance. They only send some torque to the front wheels. They design most of their cars to be RWD, so they want to stay true to that.

@alanqueen9350 2 года назад

No one explains automotive engineering better, in my opinion, keep up the good work!

@paulodepablo3649 5 лет назад

My car engineering teacher is awesome. His from youtube and he drifts good on chairs with wheels

@tojiroh 7 лет назад

"I like big butts and I cannot lie" = Rear Bias™

@MDKN22 7 лет назад

All your videos sound very high-tech and hard to understand, but your videos make it seem easy. I'm a car guru, and care about the specs and numbers, but I'm learning a lot more information from your channel. My mom has a Ford Escape and doesn't understand why her wheels can split so much torque to one wheel and how it does it. I told her, in which was pretty much the way you are saying it, and she now understands a little more about her car.

@JimGriffOne 7 лет назад

I'm loving the new 16:9 UltraHD whiteboard. Looks amazing here! :)

@CJ-ou1ln 7 лет назад

Do one with Quattro

@georgewilkinson1068 6 лет назад

Nice explanation.

@dcam456 7 лет назад

How does X-mode affect the awd on the Subaru?

@darthfx 7 лет назад

Excellent question. Allows for more gradual throttle control and tweaks breaking of the slipping wheel. Also activates hill descent control.

@afcgeo882 6 лет назад

Almost correct. X-Drive IS hill descent control and has no benefits for driving on level surfaces or up hill. It is a system to slow your descent without using brakes via your foot. It uses the engine and brakes to slow you to a crawl while descending. It's mostly a gimmick as it rarely needs to be used and in most cases it does, shifting into a low gear will get the job done along with your right foot.

@emjayay 4 года назад

@@darthfx braking

@emjayay 4 года назад

@@afcgeo882 I have X-mode on my Subaru an actually didn't know it mostly just did downhill braking. I thought maybe it locked up for uphill or something. Maybe someday unlike 99% of owners I'll be in a situation to give it a try!

@robertbarber9537 5 лет назад

Thank you Engineer Explains I love learning about vehicles and and for that I thank you

@ErsinGokay 4 года назад

awesome awd transmission tutorial, good job, keep up the good work sir

@mattclark1111 7 лет назад

Hi, nice vid, I have a quick question. Regarding the Active Torque Split system, from my understanding the car can only adjust torque delivery in the range 100F/0R (clutch completely disengaged) to 50F/50R (clutch completely engaged). There is no way for it to send more torque to the rear wheels than the front. Is this correct? If the front wheels were on ice and the rear on dry pavement, the car would engage the clutch, the front wheels would still spin, but at least 50% of the engine torque would be sent to the rear wheels which have traction and the car would be able to accelerate. Please let me know if there is something else I am missing here.

@darthfx 7 лет назад

When truly locked, front is not free to spin anymore. They are bound to the rear. They can turn only and at the same rate as the rear. Not sure if the torque rear could get is still 50.

@dPgn420 7 лет назад

What you are missing is that the front wheels on the (hypothetical frictionless) ice don't need any torque to spin, so all the torque goes to the rear. Otherwise the other 50% of the torque should magically vanish somewhere, which would violate the first law of thermodynamics.

@therealjpow 7 лет назад

No subaru is 100F/0R. The lowest split to the rear is older autos (4EAT and 5EAT) is 90F/10R. As soon as the front slips, center "diff" will lock and do a full 50/50. For older autos, the front wheels never see anything lower than 50%.

@Idtelos 7 лет назад

This vid is 11:11 long...Illuminati confirmed...

@ianirizarry30 7 лет назад

Idtelos whats really interesting is if you look at a subaru its logo has 6 stars and is on the front the steering wheel and the rear and also the meaning of subaru

@Idtelos 7 лет назад

*mind blown!

@matpayne8866 3 года назад

@@ianirizarry30 666 omg

@vinceyorston1019 7 лет назад

I had a 1990 Subaru Legacy with manual trans. It has the VSD and I loved it in all sorts of weather. The idea that I liked about that system is with 50/50 front and rear then divided again at the front and rear. You have 25% of the total power to the ground at each wheel under normal acceleration. What I found in practice is that I seldom broke any wheel loose. 25% of the power was not enough to break a wheel loose in most conditions. Even in snow the car just moves forward.

@alveydoug 4 года назад

Deep. Again. Keep it coming! (That’s why we Subscribe. It’s not so much about specific cars, as the Physics.)

@AWDfreak 7 лет назад

He mentions that all viscous center differential AWD systems are open rear differential, which is incorrect. Select older models with manual transmissions(such as the 2nd gen WRX, some Outbacks, some Foresters) were offered with a viscous rear LSD. One notable exception to this rule is the Subaru Leone RX Turbo and other various classic Subaru turbo models with full-time AWD (most classic Subaru vehicles are FWD or part-time 4WD) were offered standard with a clutch-type rear LSD. These are sought after by Nissan drifters as the R160 rear differential is shared across various Nissan RWD vehicles. The Subaru Leone RX Turbo is the first AWD Subaru to use the viscous center differential system, known as Subaru's Continuous AWD system (or Viscous Centre Differential AWD for British-English areas). The Subaru XT6 (known in Japan as the Subaru Alcyone VX) was the first AWD Subaru to use the Active Torque Split, known as Subaru's Active AWD system in Subaru of America's nomenclature. Also, this first 6-cylinder vehicle was the first Subaru to establish the current 5x100 wheel bolt pattern. The Subaru Alcyone SVX (or known as just the Subaru SVX) was the first AWD Subaru to use the VTD (Variable Torque Distribution) AWD system. However, important to note is that only specific markets got the VTD, most markets got the less-sophisticated active torque split AWD system. The Japanese market Subaru Alcyone SVX also offered 4-wheel steering (4WS). Various turbo-4 cylinder and 6-cylinder Subaru vehicles may have equipped with this AWD system, to include their crossovers. The primary mechanical difference between the ATS and VTD is the center planetary gearset implemented in VTD. It is essentially a simplified version of DCCD without the viscous coupling center differential. The DCCD AWD system derives its roots from rally racing in the WRC. The most famous early example of this AWD system being implemented is the Subaru Impreza 22B-STi Version, often known as just the 22B. The initial maximum rear-biased torque split ranged from 35/65 F/R to the current 41/59 F/R torque split implemented in MY2008. For 2018 model year WRX STI, the DCCD loses the mechanical viscous center differential and operates somewhat similarly to VTD, but with manual control.

@afcgeo882 5 лет назад

I believe what he meant was that the CENTER differential was open on the viscous center diff system. Most vehicles that run in a 50/50 torque split have locked differentials. It's important to know that because the open center differential allows for different RPMs between axles.

@toddmediumwellingtoniii478 7 лет назад

Subaru AWD vs SH-AWD

@Yathuprem 7 лет назад

Buddy goto youwheel.com there they have analysis of SH AWD system.. It's cool..

@Yathuprem 7 лет назад

Here is the link youwheel.com/home/2017/05/07/acura-sh-awd-a-comprehensive-analysis/

@d1sturb3d119 7 лет назад

SHAWD is a better system. Subaru had an active diff system in the SVX. The STI is completely mechanical. All they need to do is pair a more reliable engine and they would do a lot better.

@luchofly 7 лет назад

Mitsubishi's S-AWC is way.... better than any of those

@d1sturb3d119 7 лет назад

In what way? It's an active diff, has a clutch pack. And works the same way with a different torque split. It's pretty much on par with any active diff system from Audi, Subaru (when they offered it), Acura, and BMW.

@amanfra2121 6 лет назад

Bought a 2016 Subaru Crosstrek yesterday, mainly based on your informative videos. Thanks for doing the research so I don’t have to.

@EngineeringExplained 6 лет назад

You’re very welcome, and congrats on the new ride! Still loving mine, especially when it snows!

@amanfra2121 6 лет назад

Funny-ish story, the Subaru sales guy asked me how I knew so much about the crosstrek. I told him it was the engineering explained guy. All at once all of the sales people said, “We love that guy!”.

@brandonsever2576 7 лет назад

I have a manual 2003 wrx. 5 speed manual, a limited slip rear diff, viscous center diff, with no traction or stability control. I love it so much

@gedasalekveravicius5466 7 лет назад

I watched your old video "bad suspension mods" and I got an Idea can you put every possible suspension mods for s2k? Coilovers, swaybars, adjustable arms and links, stiff bushings? Please? Will you do it?😢

@jeromeflaherty2069 7 лет назад

Gedas alekveravičius Speaking from first hand experience. I had a 2006 Subaru Legacy GT (sedan) and I extensively modded the suspension. Bilstein HD struts, Swift linear springs, Whiteline polyurethane bushings, Whiteline rear suspension links, AVO solid sway bar endlinks, AVO rear sway bar reinforcement brackets, Energy Suspension polyurethane sway bar bushings on the front and back, Legacy Spec B upper mounts, and a Whiteline roll center and bump steer kit. Long story short, car handled great and I could really fling it around corners. But, I also ruined it. it was way too stiff and just not worth what the effort was. I went too far. All of the mods you want Engineering Explained to try out will just ruin the car on almost any road.

@2450logan 7 лет назад

Jerome Flaherty I can related I have a specb3.0 wagon highway driving is a hoot! I now feel every imperfection on the new highway with poly bushings and stiffer suspension get a constant massage through the steering wheel

@gedasalekveravicius5466 7 лет назад

Jerome Flaherty ohh okay...

@waay82 7 лет назад

NEEEERRRDDDDDD!!!!! But I love it, Love Subaru too,

@DavidYingst_505 7 лет назад

Jason, I'd love to see your take on the 2018 vs 2017 crosstrek. Your areas of focus are always the most in line with I am trying to learn about.

@yh9084 7 лет назад

Liked this video before watching it for two reasons: 1. When I saw the HUGE whiteboard full of info; 2. I'm a BIG Subaru fan.

@Yathuprem 7 лет назад

Where did u get that big white board ??

@EngineeringExplained 7 лет назад

My wonderful parents gifted it to me for reaching 1,000,000 subs. :)

@kakashi99908 7 лет назад

Looks like the 2017 Cruze hatchback with a slightly different front end.

@HassenHossenbaccus 4 года назад

Thanks for the breakdown as always. Maybe consider doing a detailed video on the Dccd setup next and how it can be further refined/tweaked/modified with the likes of aftermarket controllers e.g Map Dccd?

@carcrazy69691 4 года назад

One of the best explanations Ever!!!! Thank you!!!

@elanjacobs1 7 лет назад

Why does a CVT WRX even exist??

@billsamson6140 7 лет назад

To increase sales of the brand and "gain" fuel economy. it would be better if they did an traditional auto or a dct but we can only shake our head in wonder.

@mb14u2c2 7 лет назад

The cvt wrx sti is actually capable of going faster quicker because without the need to press a clutch and shift gears you just floor it and with a no gear transmission it just keeps winding out.... now I'm a high believer that this takes all the fun out of a sports car but I do work in the service dept of a subaru dealership and can tell you a cvt sti will pull away much faster than a standard

@elanjacobs1 7 лет назад

Is that still the case with a "hard" launch, ie. let the clutch out at 5k rpm?

@therealjpow 7 лет назад

Matt Bodkins that's funny... subaru doesn't make the STi in a CVT... they know better than that. Also if the CVT is so good and so fast, why did Subaru extend the warranty of all 2010+ CVTs to 8yr, 100k miles? And not to mention everyone with a CVT gets a letter in the mail, everyone that got a letter gets warranty extended 1 year from the date they received the letter, regardless of age/mileage.

@elanjacobs1 7 лет назад

Jeremy, he never said the CVT was good, just that it's faster

@xipodkidx 7 лет назад

I have a manual wrx, so basically what I'm hearing is I bought the shittest car possible lol

@crnzsrt 7 лет назад

Chris Diaz xD get a STi man. Love mine

@justjoshininjapan700 7 лет назад

Chris Diaz just got mine a few weeks ago. Shame the CVT gets the rear bias and we dont!

@Bengeez11 7 лет назад

Chris Diaz hellllll no my dude! You want an automatic Impreza?! Godddamnnnn that shits slow 😂😂

@martenparnapuu7108 7 лет назад

you probably have a rear lsd, so not really the shittiest car. Visco center diff and visco rear diff, i have a gc8 1998, GT, and i have a rear visco LSD atleast.

@EngineeringExplained 7 лет назад

Manual WRX is so much better than the CVT WRX. Gets better fuel economy, weighs less, higher final drive ratio (more aggressive gearing), costs less, and ya know, it's a manual!

@RedlineGeckos 6 лет назад

Great video!!! Long time subscriber and always watch during shifts at work👍🏻👍🏻

@EngineeringExplained 6 лет назад

Really appreciate it, thank you!!

@jaimegsus 7 лет назад

as always, great video! although didn't really understand that much but keep it up bro! engineering rules

@coldteeth24 7 лет назад

EE the type of guy to dispute a 2 cent overcharge at Walmart

@EngineeringExplained 7 лет назад

Nah I'm the type of guy that rounds up to donate. :)

@melody3741 7 лет назад

Engineering Explained lmao

@pinkisforpimps 7 лет назад

@coldteeth24 rekt

@SulCoCrazy 6 лет назад

Love the comeback!

@whyalwaysme2522 6 лет назад

+Engineering Explained suuuuwiiit

@MJ_868 7 лет назад

when you have no life so you get to be one of the first comments 😂😂

@StevenPeterson1 7 лет назад

VTD was also used on the 4-speed automatics. I have a 01 Outback with the H6 that has VDC, which is the same as the VTD all wheel drive setup. It has a button to allow all the wheels to spin without the TCS/ABS kicking in, aka "fun mode".

@theedge5584 3 года назад

Imagine that not only what I was looking for but more lol....thanks a mill keep the videos coming I'm almost an engineer lmao....Thanks for your time its appreciated

@jackgreenwood3602 7 лет назад

cant even comment about all the wrong in this video

@another3997 6 лет назад

jack greenwood I bet you can't. Probably because you don't actually know. Otherwise, you would be showing us just how clever you are. Judging by your inability to form a coherent sentence with basic punctuation and capitalization, I'm not surprised.

@afcgeo882 6 лет назад

You certainly can, one day, when you find something wrong with it.

@bluebird8004 6 лет назад

jack greenwood lol, says the dude driving the 13 year old Subie. I have a Subaru specialist shop and this guy is spot on. Feel free to add your vast technical knowledge to this my keyboard warrior friend