Ford Dual Clutch Transaxle (DCT) DPS6
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- เผยแพร่เมื่อ 20 มี.ค. 2015
- Unlike regular manual transmissions, dual-clutch transmissions are manual transmissions that are controlled by a Transmission Control Module (TCM) computer. To the driver of the vehicle, these transmissions operate like an automatic transmission.
Dual-clutch transmissions use two clutch disks, two pressure plates, two release/apply bearings, two clutch forks, and two input shafts. One input shaft feeds power to the odd-numbered gears, the other input shaft feeds power to the even-numbered gears.
Other vehicle manufacturers (BMW, VW, Volvo, Renault, Nissan, Ford, Honda, Mitsubishi, Lamborghini, Porsche, Fiat, Chrysler, etc.) use DCTs in some of their cars; some are used in high-performance applications due to the very quick-shifting speed and lightweight.
Questions for Teachers:
1. List the major components of the Ford DPS6 DCT transaxle
2. What is the purpose of the solid input shaft?
3. What is the purpose of the hollow input shaft?
4. What is unique about the Transmission Control Module (TCM)?
5. What is the purpose of the shift drums?
6. Describe How this transmission shifts gears
7. What are some advantages of a DCT?
8. What are some disadvantages of a DCT?
9. What is the difference between a Dual Clutch Transmission (Ford Focus, BMW, Mercedes, Audi, etc.) and a Twin Clutch Transmission (Dodge Hellcat, Corvette, Camaro, etc.)?
10. Tell me one thing you learned or found interesting in this video.
ABOUT US:
Weber State University (WSU) - Automotive Technology Department - Transmission Lab. You asked for it, here it is! This episode covers the Ford DPS6 Dual-Clutch Transaxle (DCT) which is used in the 2012-2014 Ford Focus as well as other Ford and Renault vehicles. This is an amazing piece of technology. This transaxle is made by Getrag and is the model 6DCT250.
We teach current vehicle technologies to our automotive students at Weber State University and online. For more information visit: www.weber.edu/automotive
This video was created and edited by John D. Kelly at WSU. For a full biography, see www.weber.edu/automotive/J_Kel...
Visit my other youtube channel / vibratesoftware to see the amazing NVH app for vibration diagnosis!
DONATE TO OUR DEPARTMENT
Please consider a donation to the Department of Automotive Technology at Weber State University here: advancement.weber.edu/Automotive
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36:15 They are called Shift Drums. The design has been used on Motorcycle gearboxes for many decades, although most are single clutch, using a single drum with Three grooves.
Nothing can be done better than this. Thanks a lot for your time and efforts to explain this gearbox is such a detailed manner.
Thank you for your detailed explanation. I'm in Australia and 2015/16 models are in the spotlight at the moment. I really appreciate your work and your special effort in all your videos. Thanks again.
Thank you!
I researched these transmissions when I was looking to buy a 2015 Focus. I wasn't willing to gamble on one so I got a 5 speed manual instead. Much better transmission in my opinion.
+massltca Thanks for your feedback!
These transmissions are absolute shit. We bought our 2015 focus new and had nothing but problems with shuddering. It's been back to two different ford dealers and they say it has "acceptable" shuddering which is a cop out. They should have been recalled. Stay well clear of them
@@peteryates9153they were recalled because customers won the law suite. However, because the manufacturers of these transmissions coincidentally went bankdrupt, the best ford could do was give you a certificate for a discount on their new cars if you were to purchase from them.
Awesome demonstration on how this transaxle shifts. I've wondered how this thing works and now I know. Thanks
+Guy Desrochers Thank you!
Unfortunately now more people get to see how it DOESN"T shift!
Thank you John. Great explanation of assembly and operation of this transmission.
Very informative. Thanks for taking the time to demo the actual changes from one gear to another.
Thank you!
John,
Excellent demonstration of this dct product.
Your videos are very educational and are very much appreciated.
Thanks.
+Mario Dalla Riva Thank you very much!
I'm from Brazil, and I really enjoy all of your teachings!! Keep up with the good work!
Thank you!
The observations about the assembly grease on the release bearing, missing snap rings, and preload consideration on the differential bearing was interesting.
I mean the operation that I understood (mostly) was also appreciated. Thanks for making this very valuable video!
Thank you
I have a 2013 Automatic Focus. I am experiencing clutch judder on pulling away. This video was invaluable in understanding the problem and more importantly the correct remedy. Thanks Mark H UK
+Mark Harding Thank you!
Very very nice work explaining this. I really enjoyed this lesson. Thank you for unveil the mysteries of this transmission.
+olafito18 Thank you!
I'm really impressed by the way you explain the what is what. My step dad was a shade tree mechanic. So I kinda understand the process of the repair. My dad was a great mechanic!
You're doing awesome job with making this videos.
This is super relaxing video on Saturday morning and even better food for thought.
+Adam Kudła Thank you for watching!
Those selector gears (electric motor driven ones) are pretty much the same as in sequential racing transmissions, which you usually move manually, so there's nothing that much new, but a new combination of old things. Nice to see it apart, thank you for your work!
Thank you!
Thanks for the wonderful explanation on the inner workings of the DPS6 Transmission. Really nice design, but be execution love the low miles of the car, I can deal with the shudders, but mine just went out, and luckily I'm covered by some coverage extension.
Hopefully the next ford I get won't give me this much trouble, and again thank you so much.
Thank you
Excellent demonstration as well as presentation of DCT. Thanks
Thank you for your video, I am a user of one Ford and it is very useful and now I know how it Works.Again Thank you and congratulations from Colombia.
Great video. Excellent camera work. Super detail and explanation of a complicated engineering design. Too bad this Ford Product has so many problems. I am now trying to fix a 2018 Ford Focus with Trans/Clutch issues. Thanks to a bunch of TH-cam videos and this one I have learned a lot about trans/clutch issues for this vehicle.
Excellent and thorough review! I researched the Focus when looking for a car in 2012 and this transmission had me look at the Chevy Cruze. The Focus is a nice car, but the transmission seems very costly to fix and maintain. Thank you
Every time I start thinking I'm smart.....I see something like this! Great job!
Thank you, I thought the same thing the first time I took this transaxle apart.
Che Kelley yeah the more you learn the more you realize you don't know. i wish i was seventeen again thats when i knew everything
Thank you John. Very nice demonstration and presentation.
Thank you!
أفضل فيديو شاهدته على الإطلاق عن شرح ناقل الحركة
Thank you! Very happy to see so much detail.
I have one of these cursed things in my 2013 Focus. It shifts exactly like I did when I got my first manual car (terribly), but unlike me, it never gets any better at it. Love the technology; hate the implementation.
There have been several TSBs and revisions to the input shaft seals to keep oil from escaping, running down the shafts, and dripping on the clutch discs. There have also been at least five clutch plate revisions. Ford no longer makes their TSBs public, so I don't know what's happened over the past year.
Mine had bad seals and had a clutch replaced under warranty. It no longer has the aggressive shudder it had when the clutches were contaminated, but it still shifts horribly. The TCM "learns" as you drive it, but seems to actually get worse at feathering the clutches. It's worst when accelerating from a stop or shifting from 1->2. Possibly amplified by the shortness of the first two gears.
Lastly, something inside the box makes a horrible grinding sound, especially when under acceleration and turning left. Ford repeatedly told me this awful, embarrassing noise is "normal". It sounds just like I'm dragging a six-foot steel rod behind the car. I haven't heard a clear explanation as to what's causing it, but I wouldn't be surprised if the box was slowly eating itself. Glad I'll be free of this thing (and Ford's incompetence) after only one more summer.
James Wagner Thanks for the feedback. Hopefully the newest version of the clutch and/or TCM software will improve the driving experience. I would check with your Ford dealer to see what updates are available. Thanks for watching.
@@WeberAuto yeah and the customer will have to pay for that instead of having it done for free like it should be since the customer isn't responsible for this poor design.
I think I bought your hunk of junk... lol
Yep feels just like a teenager just learning to drive a manual. Mine is especially bad first to second....really "feathers" the clutch between gears. Inspires a lot of confidence when pulling into traffic.
Great video thanks. Really helped me understand what's going on in my transmission.
Very well Explained with much detail, thank you.👍
Hello Sir.I' m from Bangladesh and l' m a headteacher, Jahangir. Your classes attract me a lot,l' m growing resourceful observing your classes, Thank you sir.
Thanks Sir for your professional update on this clutch assembly and emfrmation best of luck my friend 🍀
Thank you!
Great video! I have learned that ford has updated their software for the tcm so that it delivers better shifting capabilities as well as better responsiveness. I just purchased a 2017 focus in February and it rides and shifts great(so far lol). It was a big change since I traded an 05 focus for this new one. I plan on taking it on a road trip in a few years from now. Again great video! This is the only way I can learn from these hands on easy to understand videos
Thank you!
Very informative, thank you!....Overly complicated for it's mission.....Does not appear very robust.....
I am amazed at your in depth knowledge. I appreciate your research work and your teaching skill. I wish to be like you. Thanks for the work.
Thank you very much
Awesome video as always. I greatly appreciate the time you took to present this. I find it fascinating to witness something broken down into digestible chunks. It's also amazing to discover the workings are actually pretty straightforward! I have absolutely no idea how somebody would give this a thumbs down!!! Ignoramus!
Andrew Porter Thank you very much! it is fun to figure out how these new transmissions work.
Most educational, clearly explained. Thank you.
Thank you very much for the effort to demonstrate how that transaxle works before to watch the video, I was lost :) I have not idea how it works. now I know cause I have a 2014 Fiat 500L with a Dual Dry clutch that I need to work on it.
Thanks for watching!
A very interesting lesson! Thank you for sharing it. 🙂
I have been waiting for this for so long.... THANK YOU MR.WEBER
Chris Spencer Thank you for watching!
Thanks for a fascinating description of how it works.
I tested a Focus with Power Shift to-day (25th April 16) and I was very impressed by it. From comments below I am somewhat worried by its long term reliability so I still have to make a final decision
+John M Thank you!
this is quite useful information for a normal non engineer people who own the car, thanks lots
+Cliff Ke Thank you!
Fantastic video. Thank you so much for explenation.
+Channa Duminda Thank you!
Great to see how DCT actually works. Very cool.
+William Lopez Thanks for watching!
John, that was an excellent presentation!
+pfweeks Thank you!
Great video on Ford powershift 2 clutch auto
That is amazing, I was wondering what that lurch was between 1st and 2nd, turns out it was the engagement of one of the two clutches as the transmission switched input shafts.
Great video Weber. Great understanding how that double clutch works in my car now. Got my car out today and it was exactly as you explained, clutch foul from lubricant. The new seals are brown now instead of black. Ford really did me right on this one. All the recalls, and additions from the dealer I can't explain and a detail. I knew I was buying some new, really un-tested crap but I bought it anyway. I haven't had allot of problems with the car to be honest, I just figured it to be quarks but after all the work and the trans controller, it really drives nice now. Keep in mind I took the car in for door latch recall.
My friend has a 2014 as opposed to my 2013 and just complains all the time but never takes it in. Also has a Master cylinder check valve leak which screws everything up. Maybe 2014 wasn't a good year.
Thank you! I am glad to hear you got yours fixed and operating properly. Thanks for the feedback.
@@nasmitty5261 if your friend never takes the car in to be fixed, how does he expect it to get better?
Excellent demonstration, thank you
+Mariano Szklanny Thank you!
Fantastic work 👌 thank you for making this video!!
Thank you Randal!
Excellent sir, impeccable as always, thank you.
Thanks again!
Thank you for displaying this.
Thank you for your great video. I just bought a 2017 Tucson and Just knowing how it works makes me feel competent to operate the vehicle in the proper way so as not to prematurely wear the dual clutch.
Thank you!
In my opinion, it would be very interesting to see a video describing the single dry clutch Magneti Marelli "Selespeed" automated manual transmission, used for example on the Ram ProMaster (Fiat Ducato) 3.0 EcoDiesel.
I have one of these, and never changed the clutches but had the TCM replaced once. 213k miles. It does buck a little when getting the shafts to the same speed from a stop, but I've changed how i drive to better suit it and it drives pretty well. I give it what i know it expects with throttle position to better its shifting and it does just fine for me. A seal on the CV let it leak and now it makes some noise from being low on fluid, but its topped off again and running strong- that was 40k miles ago. Lots of interstate driving is about all it sees. Probably wouldn't of made it past 60k in the city.
congratulations, I really enjoyed this class. very well explained! I'll follow, I'm from Brazil🇧🇷
Thanks for posting. I had one in a 2013 focus, unfortunately it was complete crap car wouldn't move under its own power at 100 miles. I've got a dual clutch in a VW now, works a treat.
+Andre juneau Thanks for the feedback!
very interesting video! Thanks for uploading!
Thank you!
my first video that i watched of yours was the Manuel transmission operation. may i ask why do you use a wheel chair??
06CHEVYDURAMAX Muscular dystrophy is getting worse. Thanks for watching.
Amazing teaching! Congrats.
Thank you!
Thank you for the excellent video.
Thank you!
love your video on how this transmissions work, i really appreciate it, and im gonna ask you if you ever come accross a vw dgs, and do something similar, i will be great, and thank you again for your good work,
Great video about a p.o.s. transmission. Well done on the detail. 5/5
Congratulations, you are very didactic, Thanks a lot for share this great explanation, The DCT is wonderful , I am focus 2014 owner and it work great.
Thank you!
Wonderful wonderful. I was secretly hoping you'd get your hands on one of the DSG (DCT) transmissions from either VW or Ford. Nice clear explanation - I've learned much. Thank you!
Thank you!
i felt high on knowledge, the best drug in the world. thank you.
+sugar glider Thank you!
One advantage of a DCT is that it can pre-select the next gear.
Say you're in first, the transmission will have second pre-selected, and all the transmission has to do is engage the clutch that drives second to shift from first to second, and with most DCT systems you can shift without lifting off the gas.
If you don't let off the gas in a regular manual transmission, you can reduce the life span of your clutch and transmission.
The DCT actually lifts off the gas for you. And rev matches on down shifts too. The TCM "talks" to the PCM and operates the throttle. When it's working well it's excellent. Unfortunately some, like the wet clutch 6DCT450 are far too sensitive to dirty oil, and dry clutch versions can overheat their clutches.
Very good video
Thanks !!!!!👍👍👍
Awesome video learning every day greetings from tulua Colombia
Thank you
This is great! I would love to see the NIssan GR6 unit analysis like this
Thank you! I would like to get my hands on one.
William sir very good. Very informative video .thanks alot
You make Great videos. Thanks
Thank you!
My mother's Focus uses this transaxle. Feels like a manual the way the clutches apply. Spins the tires on accident, often. And you can't brake torque it. It defaults to neutral so it revs like you have the clutch pedal depressed in a manual. Even in drive, as long as your stopped with the brake depressed. It's been in under warranty once to have a clutch motor replaced and a reflash. Certainly better than the CVT alternative, and gets remarkably good mileage, thanks to the lack of slippage.
+Michael Allen Thanks for the feedback!
Excellent tutorial as well sir!
12:00, my car unfortunately has one of these (2014 focus) and in practice it is does not act like a traditional automatic transmission lol
Thanks for making this video though, I love to see how the internals of something I own work, especially explained by someone that knows what they're talking about.
Glad it was helpful. Thanks for watching
This is actually a pretty accurate demonstration of how smoothly this transmission shifts gears! 😏
Very well explained. Thank you
Thank you, your videos are always very informative. Its always interesting to see how DCTs and ECVTs are competing with regards to fuel economy. Hondas fit (with i-DCD) is quite interesting architecture as it also has a planetary gear.
Thanks for watching!
Thank you very much, Greate explanation
you are a very good teacher
Okay guys, listen up here. Shuddering is caused by non-aggressive driving. Which means the more you take it easy on your accelerations from a stop, the more the clutch slips and causes overheating problems with the clutch disc and flywheel. This causes "hot spots" on the pressure plate and flywheel creating "shuddering". There is nothing wrong with the shuddering condition, your car won't break down. P073 codes and lack of reverse or forward movement is caused by a faulty TCM. Ford also has hidden warranty on this, so inquire before you pay for repairs. A replacement TCM is usually necessary followed by reprogramming and clutch "re-learn" procedures. If you have to pay, you should know that the TCM takes less than 1hr to change out, but I don't the cost of the TCM itself. The Focus is a fantastic car otherwise, great on fuel, handles like a dream, comfortable and fun to drive! That's all I can say about that!
great video, thx. i would love to see you take that dual clutch apart and let us know how it works.
Thanks a lot for this video!!!!
Thank you!
Muito boa explanação.
Fantastic video! Thanks so much for taking the time to film this. It certainly takes the black magic out of the dual clutch trans and helps us ‘regular folk’ understand it. Do you know if this is the same as the 2013 Volvo V40 ‘Powershift’ 1.6L turbo trans that i believe was based on the Focus trans?
I have been told the Volvo trans has wet clutches?
Thanks so much again!
The Ford is a dry dual clutch. Thanks for watching
Ford uses both dry and wet clutches. Generally the diesel engined cars have wet clutches. These have proven to be more reliable, but longer term neglect of oil changes has caused serious problems, as obviously the wet clutch means the fluid becomes contaminated with clutch material. The fluid is expensive, which leads to some people neglecting to change it.
Excellent learning video thanks
+pcuser80 Thank you!
As noted one major difference between this transmission and a traditional manual is that the two apply bearings push to engage the clutches, which is the opposite of a throwout bearing that pushed to disengage the clutch when the pedal is pushed down in a manual transmission vehicle. In a manual throwout bearings used to wear out and need periodic replacement along with the clutch. It was an ongoing and repetitive maintenance liability. And if the driver had the bad habit of resting his foot on the clutch pedal the throwout bearing would spin continuously and wear out very quickly. My fear is that along with the dual clutches needing periodic replacement the apply bearings, which are spinning continuously under load during cruising, will also require periodic replacement. There are already reports of these transmissions needing clutch and/or apply bearing replacement at 25,000 mile intervals. This will be very expensive for the owner if the vehicle is out of warranty.
Good point! Thanks for the feedback. Wet clutch dual clutches seem to be the better method.
True. Also in a wet clutch arrangement the transmission could continuously feed lubricating oil to the release/engagement bearings (or whatever they call them) to extend their life. The problem with a dry clutch arrangement is that the bearings only have the lubricating grease packed inside them that has to last the life of the bearing, which has to spin continuously under load for long periods. I've read reports of loud grinding noises during gear changes coming from these transmissions. That sounds like the release/engagement bearings, similar to a bad throw-out bearing in a traditional manual.
Thanks for sharing! I believe this is the same transmission as in my 2014 turbo diesel ford mondeo. I spend a lot of time driving it in manual mode as the engine is so ridiculously noisy I prefer to upshift early rather than listen to it. It also takes some getting used to, in that it does not creep forward like a traditional auto when in drive and on heavy acceleration combined with the turbo lag there is a full second of nothingness on every takeoff followed by uncontrolled wheel spin.
Hi, the Mondeo does use a Getrag DCT, but it is a different model that is little stronger to handle the diesel's torque. The model number is 6DCT450/6DCT451. Thank you for the feedback about the operation of the engine/transaxle combination in your car, that second of nothingness would be annoying. Thank you for watching.
Sounds more like error 18
Great video thanks
Gracias por la información, le agradezco y lo saludo muy actualizada de gran ayuda.
Thank you
Great informative video man
Thanks for this information
I've been driving a 2012 Focus with the DCT for 80,000kms now, the Trans control module failed recently, causing it to pop out of gear, we're getting a new TCM now, but as I've done trans work on other cars I was curious to see how it works, just 4 electric motors really do the automation, I find the car is quite conservative with its clutch slippage, probably to prolong the life of the unit, it still has pretty fast upshifts and puts the power down nicely, good stuff!
+Kingsoupturbo Thanks for watching!
Excelentisimo video ,se agradece y asi logramos aprender todos y que aceite especial llevan este tipo de caja .
Hey John my daughter bought a 2012 Focus with this transmission had to have the two common repairs done input seals and tcm module. The problem with this transmission is the application its for supercars ripping the track all or nothing. Not for your daily commuters stop and go or the worse for the clutch creep. Let your foot off the brake you creep the clutch is slipping give it a throttle input now fully engaged. When you brake it disengages the clutch so dont creep told my daughter that and at 250,000 k this thing still going. Still think a pos put in the wrong application but still interesting the engineering it took to make this.
I am sorry to hear of the troubles with that car. Best wishes
John, lots of problems with this DCT in Focus and Fiesta, still on 8 week backorder cycles for the newest seals and friction material. Warranty was extended to 100,000 or 150,000 miles (don't remember which). Lots of complaints on the forums, and lots of messing around to even get in line to have this fixed.
Thank you for the feedback!
We got the same warranty extension150000
Miles when the clutches went out for the 3rd time at 89000 miles we took it in and the dealership said that was only for computer reprogramming. The cost was $2200. Thanks ford, and they wonder why people buy foreign.
I understand how this 6 speed trans works, the problem is the computer module that controls the clutch and what gear it should be in is not advanced enough to shift the trans correctly or has a lack of sensors to know when to shift up or down. Also since the shift mechanism that engages and disengages the two dry clutches are driven by electric motors or survos they do not have a sufficient battery power to operate correctly because of faulty ground connections. This will cause shuddering, pausing or even the trans engaging at idle and moving the car setting at a stop light forcing the car into traffic or at other times will not supply enough drive power to merge with high speed highway traffic. Also the trans has a problem with a leak of lubricant getting into the dry clutch housing causing the clutch to not have enough friction to drive the vehicle and then the tcm or transmission control module thinks it in the wrong gear and it does not know what to do causing malfunction resulting in hazardous or life threatening operation.
+Thomas edwin Thanks for your feedback!
I sincerely doubt that better ground connection or better servos would solve this. The fork mechanism itself has too much give. With a "normal" clutch, the springs hold the plates engaged, and the forks pull them apart. The forks don't have to be responsible for the large solid force needed to smoothly engage the clutch - that's all the spring's job. With this transmission, the springs hold the plates apart, and the fork has to supply the power to not only push the plates together but also overcome the spring tension. The forks are relatively thin and use a lever action, so they are prone to deflection. It would only take a few thousandths of an inch (hundredths of a millimeter) deflection to start oscillation in the clutch, which I believe is what's happening. Anyone who's ever used a metal lathe and heard the cutter scream while it chatters knows exactly what this looks like, and how even the stiffest machine can oscillate under the right conditions. That fork actuator is nowhere near stiff enough.
How about the throwout bearing? Seems like it doesn't have any balls or needle type roller in it. That may cause more friction on pressure plates.
i heard there is an extended warranty on the computer.. ~150k miles (not recall though)
this is exactly what happened to me! . Also the trans has a problem with a leak of lubricant getting into the dry clutch housing causing the clutch to not have enough friction to drive the vehicle and then the tcm or transmission control module thinks it in the wrong gear and it does not know what to do causing malfunction resulting in hazardous or life threatening operation.
what causes this leak?
On my third transclutch in my 2012 Focus. Ford says this is an improved part. After 5 years of a shitty driving experience the jury is still out on this latest fix. After all the years of shuttering one of my engine mounts gave out and the car was vibrating terribly. Now that is fixed and for the first time after 50,000 miles it drives like a normal car. Hope it lasts. This is my last Ford. Give me a normal transmission with a torque converter, this is for the birds.
Great feedback, thank you. I hope this last version of the clutch works well for you.
Nice work well explained
Thank you!
Thank you for the detailed video!
The Powershift automatic is garbage and just about everyone knows it. The Detroit Free Press did a large article detailing all the problems with this transmission. If you have one and haven't had it fail yet consider yourself lucky. I had mine under a year and they had to replace the transmission because it would not drive, just slipped constantly. In the five years I have had the car it has been in the shop a dozen times for transmission issues. Just this past week they replaced the clutch again and now the differential bearings are worn out. Up until now the warranty covered all the repairs. Now they want $2k to fix it!
Should the differential bearing last longer than four years? They put a brand new transmission in just four years again almost to the day.
Great job
excellent video
Thank you!
thanks for sharing...
Very nice, thaks a lot.
Thank you!
really i like this video i overhauled clutch assembly i did not open gearbox
sukesh punathil Thank you!