Understanding the Honda Hybrid E-Drive
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- Опубликовано: 27 сен 2024
- See the cool E-Drive transmission used in the 2020 Honda CR-V Hybrid, Accord Hybrid, Insight Hybrid, and Clarity Plug-In Hybrid. Watch how this incredible transaxle functions in all three modes of operation.
Clarifications.
- E-Drive and eCVT are training and marketing terms used on the Honda.com sales website and in Honda technical training to describe this system.
- Intelligent Multi-Mode Drive (i-MMD) is an engineering term to describe this system.
CORRECTIONS:
- Mode 2, Engine Drive Mode. The internal combustion engine (ICE) will operate at its most efficient rpm for the torque required to propel the vehicle. The motor is forced to rotate by the countershaft. The motor can draw power from the battery to help the engine supply torque to the countershaft (parallel hybrid operation), or it can act as a generator to supply power to the battery. Engine-only mode can occur at speeds as low as ~70.8 km/h (~44 mph).
- Mode 3, E-CVT. At higher vehicle speeds, the overdrive clutch is disengaged. The generator provides power to the motor (series hybrid operation), to the battery, or to both depending upon the battery state of charge, motor load, and other factors.
TIMELINE:
0:00 Start
0:12 Introduction
0:25 Vehicle Usage
0:51 Three modes of operation
1:42 Mode 1 - Electric Vehicle (EV) Mode
1:56 Two Oil Pumps
2:14 Final Drive and Driven Gears
3:28 Final Drive gear ratio = 65/19 = 3.421:1 (CR-V 66/17 = 3.882:1)
4:21 Counter Shaft Gear
5:22 Motor Drive Gear and shaft
6:30 135kW Motor power and torque ratings
7:17 Motor shaft gear to countershaft gear ratio = 54/22 = 2.455:1
7:53 MUST SEE: Motor shaft gear to final drive gear ratio = 8.398:1 (CR-V 9.530:1)
9:30 MUST SEE: Regenerative braking gear operation
10:20 Mode 2 - Engine Only Mode
11:42 How the engine is connected to the countershaft
14:00 MUST SEE: Overdrive clutch pack demonstration
16:00 Overdrive gear to countershaft gear ratio = 54/67 = 0.8059:1
17:00 Overdrive gear to final drive gear ratio = 2.757:1 (CR-V 3.129:1)
18:18 Power Generation
18:38 Input shaft gear to generation drive gear ratio = 39/76 = 0.513:1
19:15 106kW Power generator rotor
20:35 Final Assembly of parts - Parking Gear and Pawl
22:04 Mode 3 - E-CVT Mode
22:40 MUST SEE: Series Hybrid operation
23:45 Wrap up
ABOUT US
Weber State University (WSU) Davis Campus - Automotive Technology Department - Advanced Vehicles Lab. A technical description and demonstration of the Honda E-Drive transaxle. We teach current vehicle technologies to our automotive students at Weber State University and online. For more information visit: www.weber.edu/a...
This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see www.weber.edu/a...
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Join us for hybrid and electric vehicle training with two online courses and in a 5-day on-campus boot camp with Professor John D. Kelly. See www.weber.edu/e...
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QUESTIONS FOR TEACHERS
1. What is the name of the Mode-1 operation?
2. What is the overall gear ratio from the 135 kW motor to the tires in Mode-1 on the CR-V Hybrid?
3. What is an advantage of Mode-1 operation?
4. What is the name of the Mode-2 operation?
5. What transmission part enables Mode-2 operation?
6. What is the overall gear ratio from the overdrive gear to the tires in Mode 2 on the CR-V Hybrid?
7. What is an advantage of Mode-2 operation?
8. What happens to the 106 kW generator during the mode-2 operation?
9. What is the name of the Mode-3 operation?
10. What is unique about the Mode-3 operation?
11. What is an advantage of Mode-3 operation?
I'm a Honda master tech at a dealer and you actually explained it better than their own training material lol. I'm kinda not surprised though, the only transmissions they want us to even open and repair at the dealer are manuals, everything else we just swap and send the core back for remanufacturing.
Thank you very much
@@WeberAuto thank you sir.
Alex, what's your opinion on this drivetrain?
Will it last 120k miles?
@@freddydee270I own one with 200k, no issues
Do you need to change any CVT filters? Or it is a drain and flush transmission?
I've been watching your videos since 2014, the way you complete knock-down the parts, label them and do the demonstrations is out of this world. I hope you live long and health so that we could benefit from your knowledge in future car models
Thank you very much
i am the 100th 👍
@@SK.The-Machine-Designer Thank you!
@@WeberAuto This drive i believe is similar and in the new Honda Fit with the 1.5 engine or named Jazz here in the UK. Is there any reason if one wanted to uprate the engines power a bit with the usual tuning tweaks ; would there be any restrictions to it not being feasible as i cant see it would be in the way of the overdrive gear mode that you have explained?
@@gtibruce Only the torque rating of the clutch pack. It may slip under a higher load.
This is bloody wicked! Not only is it actually a fairly simple transmission in contrast to even an automatic or manual (It's essentially just a drop gears in and run transmission, no shift forks or multiple clutch packs and planetary gearsets), but it also reminds me of my other daily driver, a locomotive. The engine turns the generator. The generator powers the motor. Absolutely fantastic.
The way this is designed also seems fairly reliable, with only one set of clutch packs that really don't have to do much clutch work, and no real complex mechanisms at play. This really does seem like a plug and play motor/differential combo.
The old saying "Keep it simple, stupid" (KISS) seems to apply here. So long as it's kept cool and lubricated, I really see this transmission lasting a long time.
Good points, Thanks for watching
As a railfan AND petrolhead, when Honda presented this system many car pals were a bit confused, while it was immediately clear to me what it would have been like... and that's why I got one, so now I can drive a loco on the road 😀
The only thing that confuses me is that the efficiency of diesel-electric engines is pretty low. Which is not very important for railways or ships, because the cost of transportation is still cheap.
The Toyota eCVT is similar, not the same but all gears and motors. No internal clutches at all.
If I would have had a teacher like you when I was in school, I would have received all A's. Great job.
Thank you
Your welcome. I really enjoy your teaching, thank you.
@@WeberAuto your welcome. I really enjoyed your teaching, thank you .
I live in Finland do you have a school here in Finland?
Thanks you 🌹💚
I wish more teachers start teaching like you
@@WeberAuto Hello, I have a question. Is the e-cvt transmission used in this new 1.5 cc Honda Jazz exactly the same system as the e-cvt used in the 1.8 cc Toyota Corolla sedan or is it a different system? The reason why I asked this was they said that the risk of deterioration of the e-cvt system used in Corolla is less than the normal CVT. Do you think we will have problems with the e-cvt gearbox if we buy Jazz?
Im a retired master auto technician and i just love the way you put your videos together and how efficiently you explain things. Your a work of art thank you.In my opinion from what im learning about hondas hybrid systems they seem to be the most thought out and straight forward of the lot
Thank you very much!
I'm a retired master tech as well. I fet a lot out of his videos. It's good to be able to explain to people that not all cvt's are belt drive.
I love your videos John. I recently purchased a 2023 Honda CR-V with the 4th generation hybrid system, and while it’s very similar to this it now offsets the two motors and added a low speed mechanical gear to allow for a tow rating. I certainly have no intentions of towing with this vehicle but I’d love for you to show exactly how that works. I’d also love to see any additional Honda hybrid vehicle videos you’d be willing to produce. I’m sure I don’t have to tell you this but you’re an exceptional educator.
Yes, I wonder how they get the Generator to spin at a nearly 2to1 ratio of the crankshaft speed when the electric motors are Offset.
I have a 2019 Insight with this system. It's my first hybrid vehicle (I'm 73 years old). Being a mechanical minded person (grew up in my father's garage), I was so impressed with this technology when I went to the dealership to look at the car. Yes, there are other components that make up this entire drivetrain, but it's good to see this particular portion. I look forward to your sharing the inverter, computer, battery, (and other?) parts of the system.
Thanks for watching
I took apart and reassembled automatic and manual transmissions in HS and Community College auto shop classes in the 60's and 80's so it's facinating to see how modern eCVT's work. I appreciate you, professor John D Kelly and my auto shop instructors
Can’t thank you enough for what you bring to the table at no cost to us here on RUclips. Very much appreciated sir.
Professor Kelly, I've been driving EVs for over 25 years, and as an EE, I find your videos to be clear, concise and incredibly helpful in understanding what can be an incredibly complex and daunting subject area. I find myself sharing links to your videos multiple times a week on both Bolt and Clarity online fora that I belong to. From one teacher to another (I taught high school Physics and Chem for twenty years)...Bravo, sir. Bravo!
The sweetest thing about his videos is his always pleasant expressions and his methods of putting up the technology in the way commoners understands. Nice video and great person
I’ve watched a lot of yt videos, and this guy is second to none. I love my 2020 accord hybrid, and now i know why. Brilliant engineering. Instant acceleration at any speed, 45+ mpg without even trying.
Thanks for watching!
I have waited a long time for a serious professional description of the Honda i-MMD technology. Causal explanations (also for laypersons) of all operating states and their gear combinations. Thank you very much for this, Professor Kelly. (an honor for every student to be taught by you)....greetings from germany
Thank you very much
The legend is back!!!
Thank you
@@WeberAuto I have a question. Is the e-cvt transmission used in this new 2021 model 1.5 cc Honda Jazz/FIT exactly the same system as the e-cvt used in the 2019 model 1.8 cc Toyota Corolla sedan or is it a different system? The reason why I asked this was they said that the risk of deterioration of the e-cvt system used in Corolla is less than the normal CVT. Do you think we will have problems with the e-cvt gearbox if we buy Jazz?
@@attilakhan4606 my understanding is that the new Jazz/Fit also has the iMMT drive that is used here. The US don't get the new Jazz which is why he probably didn't include it in his list. I could be completely wrong.
You are one of the finest teachers I have ever come across. I cannot believe this is free.
Thank you.
I just bought a 22 hybrid accord. I'm an enthusiast whose been wrenching on my own Hondas a long time. But this is my first hybrid. Thank you for helping me understand this drivetrain compared to all the traditional manual and automatic gear boxes I've touched before.
I had a short drive in a 2020 Honda Jazz Hybrid. I could not figure out what the vehicle was doing in that short time. But it drove SMOOTHLY! I was amazed at how smooth that thing drove.
Very nice
At a time when things are falling apart for some years now my honda is the most reliable thing in my life
Thanks for watching
It's nice when at you can count on at least one thing in life
18:00 I believe on my 2020 Insight the engine can clutch in around 50 mph, maybe as low as 45, but disengages at 82-83. It's interesting how it can increase the load on the engine while clutched in to charge the battery without affecting vehicle speed, and then if you need to accelerate or encounter a hill it will reverse the flow of power and use the electric assist. It's so seamless.
I've also noticed that just before the engine clutches in (engages), the engine speed changes to match with the wheel speed so that the engagement is so smooth you can't even feel it at all.
One other bit of wizardry: when coming down a long steep hill, the battery will charge completely. But in order to continue giving you engine braking, what it appears to do is use the power created by the regenerative braking to spin the engine up ro create drag. If you use the paddle shifter to increase the coast regen effect it will immediately rev the engine higher.
Oh one last thing the Insight uses the same system as the other vehicles but the power output of the electric motor is reduced.
Anyway, cool video. I guessed that's how it all worked but never found anything on Honda's website that spelled it all out.
Awesome information, thank you for sharing
My experience with Clarity seems matching yours. The engine can clutch in around 50 mph. What i also noticed is that it can run to top speed (100 mph) with EV only, a bit higher than the 87 mph mentioned in this video.
Speaking of the wizardry, I experienced it with Clarity as well, although sometimes that behavior drives me crazy :D. I encountered many times when my car is fully charged, and expecting my full drive be in EV mode, but the engine will kicks in as I encounter the first stop sign on my way, and it will keep running pretty much the whole time for my short drive (it probably wants the engine/catalytic converter to warm up before it shut the engine down). which somehow really defeats the purpose of PHEV :D
Fascinating!Thx for that explanation.I have just purchased a Honda HRV Hybrid(Australia).👍👍👍🇦🇺🇦🇺🇦🇺🦘🦘🦘🦘
I absolutely love the clarity and detail of your descriptions of internal parts and assembly. This Honda system, removes the need for gears and shifting mechanisms for lower gear ratios commonly found in a transmission is pure genius. Thinking out of the box. Honda is redeeming themselves in my eyes since they went to sleep with the GFC!
Thank you!
As the husband of an owner of a 2018 Honda Clarity who usually messes around mecahnically with things like 1974 VW bugs, or 1989 Dodge B250 V8's I was fascinated to get some understanding of what is happening under the hood of my wife's Clarity! In Sport mode it really jumps off the start, and I can see why now with some 180+HP at its diposal. Thanks fro the clarity and explaination and demonstration! Great job.
Awesome! I drive a Clarity plug-in hybrid, and I've never seen the way it operates explained as completely as this.
Glad it helped!
Enjoyed your video , learned a lot , very interesting I was a industrial electrician for 46 years working on and troubleshooting many different kinds of motors and generators and controls, now retired and just bought a 2022 Honda Accord Hybrid . Thank you for the operation explanation of my Accord Hybrid.
Finally someone explained in depth about Hybrid from Honda after Alex from Alex on Auto gave overview of this Hybrid system few months ago.
Thanks a lot professor.
Waiting for another video of electric components of this engine.
Glad you enjoyed it! More to come soon
I have been interested in this system since I first saw Alex's explanation years ago . . : )
Thank you for this, it's the best explanation I've seen yet. While I loved my 2016 CRV I hated the feel of the CVT transmission. After driving the 2023 CRV Hybrid I can confirm an improved driving experience so I have ordered one with a delivery date of April-May here in Canada. I was not used to seeing published fuel economy numbers that were better in the city than on the highway and now I also understand why as well.
John I gotta tell you, I love these videos! As an ASE master tech and shop owner is always nice to brush up on the new stuff! Also it's just fascinating!
That is awesome. Thank you
@@WeberAuto after watching your Prius transaxle video I now have two of them! No wear components in a transmission? Sign me up! I've replaced several cells in the batteries and had an all around good time tinkering on them. Now stop talking about Chevy bolts or I'm going to go make a $15,000 mistake!!!
LOL. Okay. I have many other brands and systems in the lineup coming soon.
I have a Honda City e:HEV and your explanations are brilliant even for a lay person!!
The one thumbs down is the bloke that pulled one of these down BEFORE watching John explain it in detail.
lol, must be
LOL!
Thank's you very much !!! Your explanation gives a real vision of Honda full hybrid concepts. I'm a Nuclear Physic and a serial repairman from birth, wanted to understand this mechanical funcionality.
I drive a 2017 Accord Hybrid. This is the best and clearest explanation of the system (including Honda ads and literature) I have seen or read. I have looked and read much about this system and your tutorial here is hands down the best, many times over I have found. Thank you for your effort.
Glad it was helpful!
Estimado Señor Profesor Kelly, soy un apasionado de la mecánica, he encontrado sus videos y me regocijo con sus explicaciones claras y con los materiales a la mano. "una imagen vale por mil palabras" dice un dicho pero Ud. le agrega su sapiencia y don para la docencia.
Sus explicaciones pausadas y su excelente dicción en ingles técnico facilitan la comprensión de sus clases.
Lo saluda atentamente un "alumno oyente" desde Argentina.
Muchas gracias !!!.
Thank you very much
Professor, you are so easy to follow through the most complex mechanisms! Your preparation is superb.
Many thanks!
You have a gift for teaching! I just bought an accord hybrid and just assumed that magic made it work. Now I have a really good baseline understanding of what’s going on. Thank you.
This is a great explanation on their hybrid and it helps my understanding as he shows actual real parts with his great detail verbal explanation! Thanks!
Glad you enjoyed it! Thanks for watching!
Professor, I never seen like you person so humble and honest to educate people such niche skills. That too so easily hats of to you Professor. Please keep doing your great work to teach us. Wish you good health and strength! Stay blessed!!
Thank you very much
Kudos for presenting this in an easy to understand, yet detailed way. It's really simpler than we think when you break it down like that. I just got a 2018 Accord Hybrid so I love learning whats going on in my engine.
Not sure why this was recommended, but I watched the whole thing. Fascinating! You made it real easy to understand.
Thanks for watching
Speed limited to 87mph. Because we all know what happens at 88mph! 😂 Thanks, Professor!
Lol, yes we do!
so,what happens at 88mph?
@@dimasv22 Great Scott how do you not know Marty?
great scott ! / thats heavy,,,
@@dimasv22 I have had my 2017 Honda Accord Hybrid above 88mph briefly. I think its pretty running on direct drive of the engine at that point. If I read the final engine to wheel ratio correctly as 2.757:1 then 2206 RPM should get 60mph with an 800 revs/mile tire. It can be very quick of the line in sport mode. It does get really good fuel economy driving locally as long as the weather is not too cold.
Thanks for uploading such highly detailed video about this hybrid system, it is really fascinating how all this works together. You explained this unique and complex system in such an easy to understand method, with live demonstration. Thanks for sharing the information, Lots of love from India 😊
Such tech could not be better explained. Great work!
Thank you very much
Fantastic video on how the Honda Hybrid motor/generator system works. It was the most in-depth view I have seen. For those of us that are interested in purchasing a Honda Hybrid vehicle it is incredibly informative, especially for the technicians & serious D.I.Y. ers.
These videos ROCK! glad to see you back!
Thank you
Every time I want to see something done right, I just run any of you videos. Thank you for the effort invested and shared with world!
Very welcome
Thanks for breaking this down Professor Kelly, very professional and very informative.
Thank you
Sir, you explaining automobile engineering in very very easy and simply method, that can understand it very easily,
So nice of you
When I watch your videos, it 's like eating a delicious cake. I enjoy it very much.
Thanks a lot
Thank you very much
Wow. What a great explanation. If everyone explains a concept like this, learning could be fast and fun. Thank you.
Thank you very much for sharing, I have a Honda Clarity PHEV, I Love my car, now I know a little more about it.
Glad it was helpful!
Its nice to hear someone who knows what they are talking about teach us in detail. Thank you for putting this together.
For me the bottom line is that the engine can be optimized for narrow windows of revolutions and still achieve different vehicle speeds.
That is the CVT principle.
Thanks for watching
I totally love listening to this guy, his speach and thought into the .... What is being describe (for how simple/complicated it is) The Speaker is totally Awesome ... I wish There be more teachers like this guy
Thanks Professor!
In e-CVT mode, it works like a Diesel/Electric locomotive, or other forms of electric propulsion like submarines.
Always thought this wasn't the most efficient use of fuel since some power is lost converting kinetic to electric and them electric to kinetic. On a prius drivetrain that works similarly, but with a "power split device", It basically is a differential. when the generator that is connected to the sun gear "brakes" the ICE on the planerary gears. torque is applied to the ring gear thus powering the wheels mechanically.
Thank you. Thanks for your feedback
I think that's why they have that overdrive clutch so that when you're cruising on the highway the engine is directly coupled with almost no losses. I think they only use the series hybrid mode at lower speeds when you're accelerating or cruising slowly.
IT does make it possible to operate the ICE at its maximum efficiency, emissions, power requirement, basically optimize the ICE and not make it dependent on vehicle speed. An excellent idea put into a functional mechanism. The conversion loss is probably relatively small (3 phase motors and generators are probably 95%)...........also alows for reduction of battery weight - optimize battery for this system. (maybe 15kwh instead of 60 to 100 kwh)
@@lustfulvengance The series mode is actually used in most situations. The Jazz drivetrain (smaller that this shown here) will work exclusively in EV/series mode below 70 km/h and over 130 km/h, plus whenever acceleration is needed (no matter the speed).
The clutch is engaged only in the approximate range of a traditional 5th gear AND at constant speed.
Above 130 km/h it's just unlikely that the clutch will engage again; I don't think there's a mechanical limit, it's just that more energy is needed to win air resistance and by switching back to hybrid mode the ICE is free to spin at higher RPMs.
Same reason why many cars reach their top speed in 4th instead of 5th gear.
The overdrive mode is applied much less often than it looks. If you perform a full acceleration from 0 to top speed the clutch will in fact never engage.
@@Wilhem275 Huh, that's really cool! Thanks for that explanation of how that works!
What a wonderful forensic explanation of Honda’s e-HEV drive system. I’m not an engineer but have a real interest in engineering and mechanics, so thank you for helping me to understand how it all works. I wish I’d paid more attention in physics at school.
just for easier understanding for normal people 😁
I too thought that it was a great design it simplifies the automatic part of the equation compared to a CVT or a Dual clutch or torque converter transmission and it lets the engine turn in the best rpm for Fuel economy or power I had a idea how it worked but seeing the internal components surely make it way easier to understand . It looks like the motor/Generator and generator are cool with the gear box oil and it must have a heat exchanger with the engine cooling system. Thanks for showing us the set up I wish you would do a show and tell of the new building that would be interesting to see.
Thank you, that is a great idea
You are correct, there is a heat exchanger that sits in front of the radiator, it is only about 5 inches tall. There is a second (much smaller) heat exchanger used to cool the inverter that uses coolant that is small in comparison that sits off to the side on the Honda insight.
Last year I helped my daughter buy a new 2019 Insight based on high mileage and very good predicted reliability. So far the car has been great! I am a 1975 Mechanical Engineering graduate from the University of Florida. The mechanical Engineering department actually had a working hybrid car and minibus for research at the time. What a wonderful presentation on the drive system of my daughters Insight. I really appreciated the well thought out, methodical, and clear explanations and the labeling was a bonus. Thank you!
Thank you very much
Professor Kelly sir, You are unquestionably the best in describing how the various transaxles work. Very clear and articulate and not trying to impress the viewers. We are fortunate to have you. Please continue to do what you are doing and may God bless you with good health, piece of mind and enthusiasm for a long time!
He IS a very good professor. He does have a tendency to wander off into the weeds a little bit but he is aware of it and gets back on track before going too far. Explaining these things can be pretty technical. He does all the calculations as far as gear ratios and torque/hp is concerned. Overall, I think he's a great teacher.
Someone asked why he doesn't stand. If I recall, he is in a chair. Maybe had some accident in his history but that has no bearing at all on his intelligence, expertise, professionalism, and knowledge. Well done, Prof. Kelly!
Very good explanation of this transmissions function ... I'm a retired Honda Master technician & I even learned something from watching this vid .... Keep up the good work ...
Great to hear! Thanks for watching
first moment I thought this man is Hank from Breaking bad
Thanks for watching
I've had an accord hybrid since the 2014 and I've been explaining to everyone how it operated damn near verbatim based off the limited literature that I could find with my 2014, now my 2018 and my first hand driving experience.
Now u get to just share this video if they don't believe me.
Thanks for sharing!
Absolutely brilliant design. I have a 2021 CRV hybrid and this explains magnificently how it works. The transitions between EV-Hybrid-Engine modes are seamless. The capacities of generator and motor are perfectly adequate for good overall performance. Looking forward to more videos. Thank you.
Glad you like it!
I'm curious if this system is technically better than the the way Toyota and GM does it with the Volt? It seems like they were able to get away with smaller motor/generators because they can lock them together for more power. So it seems like Honda's might be less cost effective.
I think so, Toyota system its cheaper to manufacture. But this system allow to not power on termical motor ( with or without gas injection) when you drive more than 70kmh to limit MG1 overspeed , that reduces car efficiency . Also Toyota dont want clutches , only thinks on simplicity.
Toyota system is better. Honda is fast off the line but runs out of steam at high speed. Clarity PHEV has no passing power at all. Honda system has a real world power of only 180 hp. Toyota puts down 220 to 300 hp in the latest models. Honda needs to scrap this system IMO like they scrapped the IMA.
@@g1981c really performance of Toyotas are a level up fron Honda and Mitsibishi, accel times are better with a 20 years old design!!!!!!
@@RicardoBrion Honda has better 0-60 times, Insight 0-60 7.6 seconds, Prius and Corolla 9-10 seconds.
@@mobilcams Sorry, i was thinking in RAV4 Hybrid was faster than Honda HRv Hybrid
THank you for the lesson on the E=CVT. You have explained this technology enough to see that it is a reliable system and will be the future of most transmission design. It is superior than the standard CVT that non hybrid vehicles commonly use.
Yessssss, another great clarification of sophistication.
One of the best teachers in the world.
Wow, thank you!
watched several videos explaining the new Honda Hybrid system, this is the best so far. Now by understanding my accord hybrid, I can operate it more efficiency. Thank you so much!
Thank you, this is the first hands on video i've seen, most videos are animations but dont show the inner workings of the system.
Thanks for watching
If I'm correct that motor casing must be fixed in some how to outer casing of this unit hence power line is connected? Bit confused how the power is supplied. Thank you.
Yes it is. More to come in the next video
This video mostly shows only the permanent magnet rotors, which need no wires, but there is a glimpse of the motor stator windings at 6:20
The stator does not turn, so its wiring is fixed in place.
It does need Hall sensors or something to determine the rotor position or angle, though. The sensors will tell the inverter which windings to send current through.
We recently got the Honda Jazz hybrid here in New Zealand, and Honda's own description of how it works in their advertising makes little to no sense. Your description makes perfect sense. Thank you.
Glad it was helpful. Thanks for watching
Desde España es usted una persona muy agradable y muy profesional enhorabuena.
Mr. John Kelly, when I watch your movies, I dream to go back to school and start my education again... with you! Thank You for that wonderful feeling. Greetings from Poland.
You are very welcome
Great insight into the operation of Honda's E-CVT. Owned a 2014 Accord Hybrid and your explanation of its inner workings matches how the vehicle operated. Under light throttle and cruising around it wasn't hard to get over 50mpg. Plus it went about its business very smoothly, the only thing to get use to was the free revving nature of the engine in its support role of providing juice to the drive motor and/or to charge the battery pack. At higher speeds the only tip off that the system was switching between the Engine and electric motor was the dash indicator and a slight difference in matched speed (felt through the car). A great system that delivers great efficiency and power.
Thank you very much
If you don't mind sharing the mileage of your accord? I am looking for a high mileage accord, just wary of the battery. Seemed like the car I am interested is well maintained.
The rest of the books are saying the clutch engages at about 42-45.
Make up my mind...
You are correct, I was wrong
@@WeberAuto
On the CRV anyway.
Just May be 60ish on others...
This explains why the car gets only 42-44mpg on the 70mph freeway. It most likely is operating at a fairly higher rpm than if it had a lower overdrive final gear.
I wonder what the ice rpm is at 70mph.
This is a great explanation and it's clear that you are a natural teacher. I just bought a 21 insight, and the mechanical part of my brain was working OT to figure out how it works, this video answered all my questions and more. It's pretty cool to think the engine is direct drive to the gear train with no fluid coupling etc. Just that simple motorcycle-esq wet clutch pack to bring the engine in or out of the picture. Thanks for the time you invested into this awesome video.
Thank you very much
I watched this video back to back with the Toyota hybrid transaxle video. I learned so much! Visualizing all the components in action is really helpful. Thanks so much!
Thank you very much. I’m glad it was helpful
This transmission is ingenious! thanks for a very detailed explanation!
Thank YOU Dr. Weber, a very interesting video. No one is able to explain these systiems better than you. I wish I could have had you to teach me when I was in college. (50 years ago).
You are very welcome
Thanks for the video. Had a 2014 accord hybrid that had 150000 miles before we sold . Car was absolutely bulletproof no issues. Thinking of buying 2017 which has second generation of this transmission
What do you think about Nissan's e-power series hybrid system?
I do not know anything about it yet
Thank you for doing this video . I have been very curious about the inner workings of the Honda ECVT sense I bought my 2019 Insight . Very well done .You have answered all of my questions .
Glad I could help!
I just bought a 2022 CR-V hybrid and really appreciated this tech deep-dive thank you!
Good to see Honda shifting away from the CVT technology and adopting eCVT!
Somehow, I managed to miss this. It now makes it a significant player in the hybrid cars market (hopefully).
Agreed! Thanks for watching
Very nice video. I now understand how honda hybrid works. Prof. Used transmission to very nicely explain how hybrid on honda works.
Extremely well explained!!
If I would have had a teacher laik you when l was in school , l would have received all A's. Najat shareef
Thank you
I'm a mechanic and getting ready to buy an Insight. Thank you for the demonstration! Great presentation!
Glad it was helpful!
Thank you very much! My wife just bought a Honda Jazz hybrid. I am responsible for her familiarising to the car. Your presentation gives me just that the dealer could not. (Not that I am to tell her eCVT's secrets 😊)
Thanks for the very nice explanation! You briefly mentioned the "3rd generation" of Honda hybrid engine towards the end, but didn't mention in which year the 3rd generation was introduced.
There's a Jan 31, 2023 press release from Honda titled "Honda Two-Motor Hybrid-Electric System" you might find on the net. RUclips has gotten overly sensitive about links, so I won't include one.
It lists the generations of this hybrid system, and describes the differences. Briefly, they are:
1st, 2014-2016 Accord PHEV.
2nd, 2017 Accord (not a plug-in)
3rd, 2018-2022 Accord, Insight, Clarity PHEV, CR-V (this one; not every model was made each year).
4th, 2023+ Accord, CR-V, Civic, anything else coming soon.
Most of the changes were tweaking the motors and some electronics. The 4th moved the generator's shaft away from the motor's (5:35 and 18:20) so they are parallel. It also adds, in the CR-V only, a second clutch and overdrive gear for towing.
I watched this right after watching the RAV4 hybrid video. Awesome! Now I know the differences between the Toyota's and Honda's implementations of the hybrid transmission.
Amazing explanation,because I just bought 2022 Accord hybrid,so far so good,I got around 40 to 45 MPG,thank you,now I understand why this car get great mileage,if I drive 70 MPH on freeway and keep the engine steady,I can see the car move on electric only.
Excellent explanation! I never thought I would understand the system. Your explanation has clarified everything. What a great teacher you are. Thank you!
Thanks for an amazing primer on the Honda ECVT transazle. I've always wondered how it worked but had not found a clear description in laymans' terms until seeing yours. I appreciate the effort that goes into this type of analysis and discussion and want to express my thanks for it. Regards, Ed
Wow, I am no engineer but this guy explained it so well (even a putz like me could appreciate it!). Just bought an insight. Probably the last one made.
I have a 2018 Honda Accord Hybrid Touring and in the last 6 months decided to keep it in Sport Mode which is Mode 3 from your discussion I believe. It sacrifices mileage but it is so much fun to drive I don't care. Thank you for the wonderful discussion!
@@jeffjo8732 You are right and I like Sport Mode for the increased performance and the tighter suspension. Unfortunately I have to turn sport mode on every day I drive the car. Can not be defaulted on.
I have today ordered a UK Civic e-HEV so your clear explanation is timely. Thank you very much.
Hello Professor Kelly we need your comeback. many changes and innovations are nowadays and help us find out which one is the better😊
Thanks for showing the actual tear-down. It's nice to see the actual insides of the transmission rather than just talk about it or show a rough diagram.
I drive a Clarity PHEV, and I can drive in EV mode only as high as the vehicle's max speed of 101mph. The Accord Hybrid's maximum speed is higher (115 I think?), though it uses the engine as soon as you breathe on the accelerator, so you're never going to get even close to that on EV only.
There's an icon that shows in the power flow display that shows when the overdrive clutch is engaged; I've seen it engaged as low as 43 mph (plus or minus a couple mph- I'm just glancing at it as I drive).
Thank you very much
Thanks for taking the time to put this video together for us! Very cool transaxle.
Glad you enjoyed it!
Respect.
Concise and precise explanation. Clear and informative.
I bought the 2019 Honda Accord just because of this drive train and the fact that it doesn't use a planetary gearset transmission to modify torques. So cool to see it all laid out! Thanks for this video. By the way, driving it, you can hear and feel the different drive modes when they kick in. Overdrive is loud lol, since it doesn't kick in until those high speeds. The dash shows you how the power is used in the motor during each mode: battery to drive, engine to battery, engine to drive and battery.
Great presentation. This gels with everything I've read about the Clarity drive system. It's nice to see it so clearly demonstrated. The only thing I wish Honda would not do is call this a variable drive because there is nothing resembling a CVT.
Glad it was helpful! I agree about not calling it a CVT
I think it's purely for the uninformed customers I see.
I work as a technician and talk to the customers from time to time.
Most of them have no idea how a car works. If someone told them there was no shifting in that car they'd be more confused than they already are.
Well explained and now better understand how this hybrid operates. Thank you for sharing this information. Genius minds at work always trying to reduce breakage to minimal and keep weight gear down. Just truly impressive
An incredible explanation of an incredible system