This video shows the operation of the power split device or eCVT of a Prius, Escape, Fusion, Maverick and other hybrids that use this system.
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@mikewallace8087 Жыл бұрын
Every element of this complex system was made equally robust to all the other elements . That is why it is successful and admired . No weaknesses that compromise reliability . That is a rare achievement . CEO's and accountants usually destroy reliability .
@tythomps Жыл бұрын
Your last statement.... As a career engineer... That is so true!
@zechssiguro7476Ай бұрын
@@tythomps I think he was throwing shade on what went on & is still going on at Boeing.
@dkdanis1340Ай бұрын
They mostly don't ruin reliability. The issue is if something is rushed.
@Sunshone73113 ай бұрын
The best part is that these transmissions do not have chains and are all gear driven which means they really last forever when maintained. My Honda Clarity has 180k miles and is still going strong.
@Negev-Israel11 күн бұрын
And your Honda clarity doesn't use this system. Lol
@exuconton4 ай бұрын
Toyota engineers deserve the Nobel Prize for that. The ultimate achievement in ICE-powered cars. And ICE will remain with us for quite a long time - everybody knows that long distance cruising in BEV is practically not viable, especially during the winter.
@sacleocheaterz4 ай бұрын
I always thought the eCVT was just toyotas name for yet another unreliable CVT.... But this is a work of genius and no wonder there are barely any reported failures...
@piggy3102 ай бұрын
@@sacleocheaterz Yikes, it took you that long, I mean Toyota has only been making the most reliable hybrids on earth for like 20+ years.
@razvanlex15 күн бұрын
Yet somehow not a problem in Norway, about 30% EV's there. And really cold.
@Tuppoo94 Жыл бұрын
This is probably the best possible transmission if the car has to have an internal combustion engine. Notice also how it doesn't have clutches, so there's very little that can wear out, other than the battery that drives the electric motors.
@djole027 ай бұрын
You don't even need a battery for this to work (apart from starting the engine). You can simply just transfer the electricity between the two motor-generators... There is also a hydraulic version of this system in heavy duty machinery.
@krecikowi7 ай бұрын
and it's definitely not a CVT + first gear like many will explain eCVT vs CVT.
@djole027 ай бұрын
@@krecikowi It is CVT, just not the V-belt type...
@geemy96753 ай бұрын
yep. that's the beauty. no clutch slip or torque converter required, it replace the starter, automatic gearbox, clutch, and possibly alternator. no actuators, clutches, just vers rotating in oil
@Sep-jk3vi3 ай бұрын
@@geemy9675and also no flywheel as there allways is a rotating mass in the gearbox that is fixed with the ice
@betruly78945 ай бұрын
In my opinion this is the best simplest video in youtube to explain the marvel of the eCVT transmission. Thank you.
@KennethBoyd Жыл бұрын
Thanks for the video, I had totally written off CVTs and assumed the eCVT was similar to a CVT.
@jolibethrodriguez74713 ай бұрын
CVTs are good and reliable when made with good materials and have an dedicated controlling software, thats why they dominate the industrial and farm equipment designs
@bjarnehansen38122 жыл бұрын
Great explanation of the transmission in my RAV4 PHEV. So smart and so smooth in real life
@Philjj612 жыл бұрын
I have an 08 Prius with 230,000 K, the eCVT is completely smooth and allows for the best fuel economy because they fully adjust everything together as one, electric motor, petrol motor, wheel torque required, the best cruise control function, etc.
@ysakgul2 жыл бұрын
This is crazy! If I hadn't driven a car with eCVT, I wouldn't have believed it worked! Who would think such staff?
@jessewoody5772 Жыл бұрын
Without Engineers we'd all still be walkin..... A non E cvt is junk but this using a planetary gearset as cvt is pure genius
Thank you. This is probably the best video I’ve seen on KZfaq that explains how these eCVTs work.
@alhemmings85543 ай бұрын
Fantastic video. Everything was explained clearly and the visual representation was helpful
@gerpeter44895 ай бұрын
I believe that Fendt Tractors made in Germany acheive a contiuously variable drive by using a hydraulic motor to manipulate the sun or planetary portion of the planetary gearset to transmit massive torque in a speed controlled manner. Brilliant stuff. I own a 2019 Toyota Camry Hybrid, and love the incredible research and developement that has gone into their products. My real world fuel ecconomy over 120,000 trouble free kilometers is 5.2 liters/100 kms. Unbelievable for a mid size car. And no traditional CVT belt. :)
@zijie-he10 ай бұрын
The system is really great, especially without any clutches. And the explanation is quite clear. Thank you.
@andrewvader19552 жыл бұрын
That's crazy cool! The RAV4 hybrid uses this method
@chang8503 ай бұрын
The best explanation that I've see about this topic! Thank you so much!
@kevinmills52932 жыл бұрын
Thanks for the info. It confirms my understanding of how the eCVT is used.
@nickoekanugroho4582 Жыл бұрын
I though the computer was doing some clucth trick to split the power, heck i didn't even think that it was fully mechanical!
@tiempoespacial69968 ай бұрын
This explanation is BRILLANT !
@dannybryant68733 ай бұрын
At speeds below 45 mph these are electric cars with gasoline assist. At speeds above 45 mph the electric motors work to make the gasoline engine do almost all of the work (at the optimum rpm and load, of course) And the gasoline engine can only assist in the forward direction. All reversing is from the big electric motor.
@tantratron2 ай бұрын
Fantastic crystal clear video, thank you
@Gopher3125 күн бұрын
Great way to get a basic understanding of this system. I’ve been impressed by this system ever since I tried an ecvt PHEV. I thought I would hate it but actually it’s a great system. Hopefully when they change to the 1.5 turbo they can make the engine stay at 2-3000rpm in acceleration. The rev flare is the only Negative with the ECVT
@alanw.4511 Жыл бұрын
Wow. Brilliant explanation and real life model. Way better than a 3D animation.
@markjmaxwell98192 жыл бұрын
A very versatile drive system.... Bikes cars the list goes on.....
@jirist4196 Жыл бұрын
Absolutely sick! GJ Toyota! And GJ David Patience.
@phillipramirez671911 ай бұрын
awesome demonstration
@t.f.t.64 ай бұрын
Complex electrical electromechanical system i hope this will last long
@harishnagadikerikittappago2257 Жыл бұрын
very comprehensive explanation
@MrDhiaMt2Mix5 ай бұрын
Wonderful Toyota ! ❤ Thanks for this video ! I will try to create an 3D printed RC car using a stirling engine and a 3D printed eCVT 😁
@craigb8379 Жыл бұрын
Really great explanation and demonstration. Thanks
@jessstuart7495 Жыл бұрын
Nice demonstration! Thank you.
@michaelyawkal4592 Жыл бұрын
Tnx bro you explained this so complex system into easy ways with simulation pls come again
@Jone9523 ай бұрын
How much power output is required by MG1 compared to the ICE over the full range of speeds? It looks like MG1 has a mechanical advantage over the ICE, so it will require less torque, but does that translate to less power? I'm having trouble wrapping my head around this.
@mikeyo1990 Жыл бұрын
Great video always wondered what was going on
@wickytam2006Ай бұрын
What is the different between motor free and held? Does the motor have a “brake” to hold it still? How is that implemented?
@reclaimer3439 Жыл бұрын
Great description of the system eCVT. I was curious how the variable part works without the use of cones, belts, or whatever. I'm amused at how it seems to be a Ford training but only because I know Ford licensed the Toyota system. 🙃
@Derively8 ай бұрын
Ford doesn't actually use Toyota knowledge. These 2 brands worked together at the first half of the development, but they split up, so they finished seperately. There are no shared parts. It's like saying that every manual transmission was licensed from xy brand. It's not true. There are actually some Ford upgrades to this transmission that Toyota implemented many years later.
@jeedwards198111 күн бұрын
@@Derively its the same design though and Im pretty sure Toyota came up with it, meaning ICE engine 2.5L and power split device(ecvt) with two motors
@Derively11 күн бұрын
@@jeedwards1981 Then you can also say that the Honda uses Ford Mondeo / Fusion engine in the Civic, because it's a N/A 2,0L Atkinson cycle 4cylinder with the same power, same ecvt. But I know that's not the case.
@jeedwards198111 күн бұрын
@@Derively design and exact copy are two different things, I guess you dont understand. Ford didnt create that design Im pretty sure Toyota did but Ford used the design . No other hybrids use that same design
@SOMEONE-ME9 күн бұрын
Toyota licensed it to Ford because Ford did held some patents which Toyota needed. Without them they could not develop it further, so they made agreement with Ford, which let them to work not he system and make it very mature by today.
@natoroch5814 Жыл бұрын
Simply awesome thank you for this knowledge it will be used
@user-oc6wi3tg1h8 ай бұрын
感恩了解,謝謝分享!
@jackdaniels26574 ай бұрын
This unit has a 1 way sprag that's what connects the engine to transmission and lets the engine drive or recharge the generator
@toiam83506 ай бұрын
Lemme see if i have this right This is not like conventional transmissions where gear ratios are directly changed by gears. This is better described as a direct drive system that uses an open differential and electric motor to allow a ICE to rotate at speeds regardless of vehicle speed
@2bfrank6574 ай бұрын
Agree, while the speed ratio can be changed, the torque ratio is fixed. This makes the"ratios" involved different to those in other transmissions. Certainly a very cool system though - permanently meshed gears, no clutches, no synchros, to torque converters 👍
@fredthebulldog529 Жыл бұрын
Outstanding video
@penknee30942 жыл бұрын
Excellent explanation.
@subazealand9158 Жыл бұрын
That feeling on insta torque, where i can crowl at very low speed with almost not touching the gas, is it thanks to this eCVT or because the car is hybrid?
@user-df8jj9tj9y5 ай бұрын
Best explanation I've seen. Bravo!
@jonascyvas2 жыл бұрын
When I let go of the throttle and start to coast (at a bit higher speed) and once the speed drops to around 47mph (75kph) I feel a little jolt - sort of like the engine starts. Why is that? It happens every time and at the same exact speed.
@dansmcclongviewautotech93712 жыл бұрын
Hey Bro! That is an awesome video! Great job!
@vasilispapadellis80228 ай бұрын
Very nice
@buryato_banderovets3 ай бұрын
So it has NO gears? Just combination of mg1, mg2 and engine RPM? It's difficult to make it productive...
@wyheee7 ай бұрын
I didn't understand much. It's too complicated for me. 😅 Though I hope this explains this is different and better than CVT. Because they say hybrid Camry has a E-CVT. I took a test drive 2023 Camry for very short time "20 minutes only" and I liked how it's quiet and smooth it was that I didn't drive over 60-80 km/h 😂
@oshaapproved761211 ай бұрын
So this thing has an electric motor in place of a torque converter? is that what I'm seeing? That's brilliant.
@Derively8 ай бұрын
And how is that achieved when my Fusion hybrid has a cold start, the combustion engine is running at idle rpm, and the electric motor is driving the car alone? As there is no clutch, it can't disengage the engine from the driveshaft.
@PuffinDragun693 ай бұрын
What does output mean in the diagram?
@muhammadnurikmal81343 ай бұрын
What if we accidentally switch gear to N when driving, is there any impact on the ecvt transmission?
@danimoro1002 жыл бұрын
Well explained
@james20425 ай бұрын
I knew the ecvt was different, but every video prior it was just black magic in a box. While I still don't fully comprehend it, at least I can see it
Жыл бұрын
I admire whoever came up with this idea, but I think nissan e-power is simpler and more efficient!
@SOMEONE-ME9 күн бұрын
It's different system as petrol engine never drives wheels in Nissan. It's just act as pure generator for big electric motor. Even better version of it is new Honda's system which is similar, but further improved (more complex, but also more efficient). It's hard to say which of those 3 is the best. Each has its own + and -. Real world number shows that Toyota's system is actually most efficient (maybe because it has been developed for longest period). Nissan or Honda are driven by strong electric motor, so in this aspect they are more like "electric" cars (nice acceleration etc.). Toyota has weaker electric motor and when more power is needed petrol engine provides main power. This is the main difference between those 2. If you want compare Nissan than compare it to Honda as Toyota uses quite a different design (and Honda uses same one with extra bits for more efficiency, but more complexity as well).
@TopBoi932 жыл бұрын
I’m looking to purchase a lexus is300h 2016 reg. I see some that say cvt and others that say e-cvt which is why I looked up this vid. I am complete newbie with this stuff, can someone please advise me which one I should get and why (in simple terms). Many thanks.
@davidpatience46822 жыл бұрын
I believe the is300h will have the eCVT described here, not a conventional CVT.
@alibatebi21615 ай бұрын
amzing video thanks
@sburner90683 ай бұрын
Toyota should really nave the eCVT differently. Everyone assumes that eCVT is CVT + electromotor. But this is just different.
@piggy3102 ай бұрын
It is a CVT...Only karens question Toyota's hybrid domination/expertise.
@aaliyan6969Ай бұрын
How can the vehicle move in reverse direction using only the internal combustion engine? Thank you
@davidpatience4682Ай бұрын
@@aaliyan6969 in reverse all torque is supplied by MG2. The engine cannot provide torque to the wheels in reverse but it may be running to power MG1 as a generator.
@aaliyan6969Ай бұрын
@@davidpatience4682 But if a malfunction occurs in the electrical system of the hybrid vehicle, it turns the electrical system off, does that mean the vehicle can’t reverse?
@SOMEONE-ME9 күн бұрын
@@aaliyan6969 Probably yes, but it's very rare to happen. In petrol car when engine breaks then you can't drive at all as well :)
@vwrxlasvegas Жыл бұрын
I wonder how durable this transmissions are in the long run!
@harshpatel1972 Жыл бұрын
Very. I drive a prius with an ecvt - 300k miles and you never feel the transmission.
@nick-leffler9 ай бұрын
I second this. Kinda sucks belt based CVTs give CVTs a bad name since eCVTs are completely different.
@piggy3102 ай бұрын
Find a mechanic or dealership that's actually had to replace on, even at 300,000 miles, hint: good luck.
@SOMEONE-ME9 күн бұрын
There are Prius cars in US which done close to 1MLN miles, so it's very reliable :) Try to find any video showing broken E-CVT in Toyota. I tried and there is nothing. In many UE countries Toyotas are used for taxis due to efficiency and reliability. If they were crap, not taxi driver would touch them. Plain simple. Better prove than any (typically paid) ranking etc.
@Reviews-For-You.11 ай бұрын
So how does transmission fluid play into this? Excuse my ignorance!
@davidpatience468210 ай бұрын
The fluid is still used for cooling and lubrication, but not used as a hydraulic fluid.
@xenosaiyan-8106Күн бұрын
I still don’t understand what’s going on
@castcrus Жыл бұрын
TIL, no starter in my RAV4 Hybrid. No wonder it doesn't make a lot of starter noise, and it shakes less than my petrol car.
@donaldparrott456911 ай бұрын
Can you tell me what is turning inside when I put my Maverick in neutral tow mode and tow it behind my motorhome?
@piggy3102 ай бұрын
Probably a gerbil with a rainbow flag.
@tomsimbron6092 ай бұрын
Y'all just had to use chains in the demo. The lack of chain belts in ecvt is what makes it robust.
@davidpatience46822 ай бұрын
I didn't make the model only the video. But the real unit has a chain too.
@darwinbodero78728 ай бұрын
Toyota goated for this
@doctor_who1 Жыл бұрын
with so many parts needing to move, is the efficiency lower than pure ICE?
@timobermark673211 ай бұрын
Your comment is 5 months old but thought I would add some insight. In comparison to a normal automatic transmission an eCVT has a fraction of the parts. Granted to make it work you need electric motors and a battery so you can't just put one of these in a pure ICE vehicle. Couple a simpler transmission and regenerative braking and harvesting excess engine rotations for power you get very efficient vehicle. My Ford Maverick gets 45 mpg on the highway.
@johnmartin71589 ай бұрын
@@timobermark6732. For everyday motoring I agree with you. But for a high speed continuous run I’d prefer a DCT or 6 peed torque converter.
@SOMEONE-ME9 күн бұрын
@@timobermark6732 No, because ICE engine in this system works mainly in its optimal RPM range and then it has close to 40% efficiency. Normal ICE by average works with maybe 25% efficiency. On top of this you recuperate a lot of energy from braking, down hill etc. It may look complex but in reality it's way simpler than typical automatic transmission.
@tianic9 ай бұрын
I have the exactly same thing in school hahaha
@melquisedecrivers-suarez46186 ай бұрын
Ecvt is not even close to a cvt so why call it cvt?
@gerpeter44895 ай бұрын
Because it is a Contstantly Variable (ratio) Transmission. It just does it without a belt
@2bfrank6574 ай бұрын
Agree, I think CVT is a bit of a misnomer in this case. The torque ratio of this transmission is fixed, though the speed ratio does vary. In every other transmissions, one is the inverse of the other.
@toko77462 жыл бұрын
Try make it more visually clear. It was not obivious what is going on on this one