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.
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
@@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?
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
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.
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.
@@veden310 In a train, the point is to get full torque, distributed over many drive wheels, from 0 mph. And, since POWER=TORQUE*RPM, when it is staring the loco needs a small fraction of the power it is capable of. An internal combustion engine is most efficient within a small power band. I don't know about diesels, but it might be 20% to 40% of a gasoline engine's maximum rated power. But if well-matched, the car it is on needs less than 10% to maintain speed, but at least 50% for acceleration. So it seldom runs near its best acceleration. I suspect the needs of a train are even less favorable, which is why they are inefficient. The point of a hybrid is that the engine can produce a different level of power than the car needs. So the engine can run in that efficiency band as often as possible. The battery is used as a buffer, storing excess energy when the engine over-produces, and assisting when it under-produces. Diesel-electric locomotives do not have a battery. They can't do this buffering.
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!
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.
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 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.
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.
@@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?
You sir are a master teacher. The way you broke this down I was able to totally understand. I am NOT MECHANICALLY INCLINED. I struggled to understand a basic automatic transmission or manual transmission. You just explained a far more advanced transmission than a 1950's Hudson Hornet transmission I looked at the museum. Thanks man
Have purchased the new Jazz (UK) with this transmission and this is a superb demonstration on how it works - many thanks. It should be compulsory viewing for all of those car reviewers that tell us this transmission system is a CVT (as in a 2 pulley system) because that is what it sounds like if you put your foot down. Probably partly due to Honda calling it an E-CVT
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
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.
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.
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!
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 !!!.
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
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.
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.
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.
Bought a 2025 Civic Sport Touring Hatchback. I now undestand much more clearly what separates this from the Ford or Toyota types. Thanks for the well designed lecture and demonstration.
Fascinating - thank you. You did a superb job of demonstrating how the Honda hybrid system works. Loved how you explained how all of the parts work together. I'm considering a new 2023 CR-V and this helps a lot.
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.
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!
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!!
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.
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
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.
I remember when I was in GM school back in the 80’s &90’s. That was how instructors taught us. This man explains it as an excellent instructor too. This seems to be a good trans, Very simple & much fewer parts than a 10 speed auto trans. Hybrid is the future.
Congrats for superb didactic ability and speech clarity. So easy to follow, comfortable to hear. A gift for a no-native english speaker abroad. Bravo !!
WOW, I have been trying to find a video that actually explains how my 2019 Insight's drive systems works. You did it! No schematics or plastic models. Genius, you have the real parts and show how it really all fits together. THANKS!
@@WeberAuto Hey guys 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?
@@WeberAuto which is stronger, longer life and must be bought is what i need to know actually i will buy as per your suggestion. I mean i ask the smooth one.
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
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.
Your channel has been suggested to me by my e-mobility professor in Turin, really fantastic videos for a passionate automotive engineer. Thanks for your work from Italy.
sir you are a real professor, I the world no one can explain really like this, I was so much impressed upon you I am a professional Machine designer of 45 year old. i this method in the diesel locomotive engine but reducing to the car level is amazing from right now I am going to imitate your language! Thank you so much
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.
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!
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!
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!
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.
man i just love you for real, stumbling upon your videos randomly reaaaaally helps me to understand more about hybrid car’s transaxle. the way you explain all the components and its purposes are so clear and to the point. wishing you a very good health, and please educate us more professor.
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.
@@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.
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!
@@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!!!
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
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.
Thank you! This is absolutely splendid. The only clear explanation I’ve found of how the Honda hybrid system works. Seeing the disassembly/reassembly sequences really helped clarify operations-especially for the E-CVT mode. A++
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.
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.
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.
Thankyou thank you thank you!!!!! I watched three times in a row!!! Our family has 2018 Clarity with this system... You revealed all!! The Park mode...why it rolls a bit in that mode. How the single direct engine gear clutches, over course how it all inter relates... The regen power through main motor!! How the Generator inter relates.... Wow wow!! We love our vehicle .. This tech would be so cool in marine environment... I love the way there are no belts or external alternators etc...
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.
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.
Congrats, professore on the new digs! I’ve been re-watching your Bolt deep dives this past week every night. My wife thinks I’m nuts. Great content. The coolant has given me a craving for orange crush!
I have to tell you, your work has raised my interest in replacing my BMW ICE vehicle with an EV. I love the simplicity, efficiency and performance of an all electric. The upcoming VW ID.4 looks great as the RWD driving dynamics and quality construction looks to be top notch. Plus they’ll be constructed in Chattanooga plant, USA.
Wow, thanks so much for your demonstration. Now I understand how Honda have built the transmission/ motor assembly without a 'gearbox'. A very tech subject explained brilliantly. Thank you
Actually it IS a gearbox but very few friction parts. The Toyota version has NO internal clutches at all, this one has one set of friction plates. Either has much fewer parts that can fail due to friction.
Congrats on the new building and what an excellent breakdown of the new Honda system. It seems Honda hasn't been as asleep as they appear to be when it comes to electric vehicles in recent years. Thank you and I look forward to learning much more in the years to come.
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.
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.
Much appreciated, great effort and well explained. I think this is such a great design compared to the standard hybrids , and it's more of a transition toward electrifying Honda vehicles moving forward
When Honda used to participate in the world Solar Challenge (Darwin to Adelaide) I was astounded at the quality of their builds! The Honda Dream was something to see!
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.
@@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.
I really enjoyed this video, and shared your excitement. the more you explained this the more it became evident why this is so well thought out and exciting, thank you for taking the time to educate people Professor.
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.
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.
Excellent instructional video! I recently took delivery of a 2023 CR-V Sport Touring (Hybrid of course) and would love to see a video by you of the fourth generation hybrid system which has the two motor offset to shorten the length as well as a two speed lock-up rather than just the overdrive gear. Honda claims the addition of the new low speed lock-up allows for towing up to 1000 pounds. I don’t plan on ever towing anything with a CR-V Hybrid but I’d love to see what the system looks like opened up like this. Again, fascinating video.
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.
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.
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).
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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.
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.
You are one of the finest teachers I have ever come across. I cannot believe this is free.
Thank you.
a small rotor with description 135kW - you are not educated in engineering
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.
@@veden310 In a train, the point is to get full torque, distributed over many drive wheels, from 0 mph. And, since POWER=TORQUE*RPM, when it is staring the loco needs a small fraction of the power it is capable of.
An internal combustion engine is most efficient within a small power band. I don't know about diesels, but it might be 20% to 40% of a gasoline engine's maximum rated power. But if well-matched, the car it is on needs less than 10% to maintain speed, but at least 50% for acceleration. So it seldom runs near its best acceleration. I suspect the needs of a train are even less favorable, which is why they are inefficient.
The point of a hybrid is that the engine can produce a different level of power than the car needs. So the engine can run in that efficiency band as often as possible. The battery is used as a buffer, storing excess energy when the engine over-produces, and assisting when it under-produces.
Diesel-electric locomotives do not have a battery. They can't do this buffering.
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!
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.
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 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
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?
You sir are a master teacher. The way you broke this down I was able to totally understand. I am NOT MECHANICALLY INCLINED. I struggled to understand a basic automatic transmission or manual transmission. You just explained a far more advanced transmission than a 1950's Hudson Hornet transmission I looked at the museum. Thanks man
Have purchased the new Jazz (UK) with this transmission and this is a superb demonstration on how it works - many thanks. It should be compulsory viewing for all of those car reviewers that tell us this transmission system is a CVT (as in a 2 pulley system) because that is what it sounds like if you put your foot down. Probably partly due to Honda calling it an E-CVT
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
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!
We have just bought a 2025 CR-V Sport Touring version, now waiting on them to find one. This video is the best at explaining its operation. Thank you.
Can’t thank you enough for what you bring to the table at no cost to us here on RUclips. Very much appreciated sir.
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.
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!
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
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
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.
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
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.
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
Bought a 2025 Civic Sport Touring Hatchback. I now undestand much more clearly what separates this from the Ford or Toyota types. Thanks for the well designed lecture and demonstration.
I have a Honda City e:HEV and your explanations are brilliant even for a lay person!!
Hello Mr. Weber, just want to tell you that you might be the best teacher that I ever saw on RUclips so far. Thank you for the lesson!
Fascinating - thank you. You did a superb job of demonstrating how the Honda hybrid system works. Loved how you explained how all of the parts work together. I'm considering a new 2023 CR-V and this helps a lot.
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.
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!
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
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).👍👍👍🇦🇺🇦🇺🇦🇺🦘🦘🦘🦘
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.
Professor, you are so easy to follow through the most complex mechanisms! Your preparation is superb.
Many thanks!
Its nice to hear someone who knows what they are talking about teach us in detail. Thank you for putting this together.
My cousin was one of the engineers on I believe this drivetrain and the Honda collision mitigation system !
Very cool!
I remember when I was in GM school back in the 80’s &90’s. That was how instructors taught us. This man explains it as an excellent instructor too. This seems to be a good trans, Very simple & much fewer parts than a 10 speed auto trans. Hybrid is the future.
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!
Congrats for superb didactic ability and speech clarity. So easy to follow, comfortable to hear. A gift for a no-native english speaker abroad. Bravo !!
Many thanks!
WOW, I have been trying to find a video that actually explains how my 2019 Insight's drive systems works. You did it! No schematics or plastic models. Genius, you have the real parts and show how it really all fits together. THANKS!
Glad you liked it!
@@WeberAuto Hey guys 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 It is not the same system, but it is a good system.
@@WeberAuto which is stronger, longer life and must be bought is what i need to know actually i will buy as per your suggestion. I mean i ask the smooth one.
@@attilakhan4606 They are both equally good and strong. This Honda system has been around since 2014, the Toyota system has been around since 1998.
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
We need to see the wiring harness that connects the motor and the generator.
You got a good channel here. Very informative. Thank You.
Thank you
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.
Your channel has been suggested to me by my e-mobility professor in Turin, really fantastic videos for a passionate automotive engineer. Thanks for your work from Italy.
Saluti da Canada 👋🏻. Spero che stiate bene con questo maledetto virus. Ciao
Thank you very much
sir you are a real professor, I the world no one can explain really like this, I was so much impressed upon you
I am a professional Machine designer of 45 year old. i this method in the diesel locomotive engine but reducing to the car level is amazing
from right now I am going to imitate your language! Thank you so much
Thanks and welcome
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!
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!
Congrats for the new building! Outstanding transmission you just show us. Thank you Professor.
My pleasure! Thank you
Desde España es usted una persona muy agradable y muy profesional enhorabuena.
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!
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!
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.
man i just love you for real, stumbling upon your videos randomly reaaaaally helps me to understand more about hybrid car’s transaxle. the way you explain all the components and its purposes are so clear and to the point. wishing you a very good health, and please educate us more professor.
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 . . : )
Sir, you explaining automobile engineering in very very easy and simply method, that can understand it very easily,
So nice of you
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.
I love watching passionate and knowledgeable people share information
Thank you very much
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.
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
Allways nice to see a video explaining every detail.
Thank you very much
This is the only video after which I actually understood how an eCVT works. Thanks a lot Professor. you are awesome!!!!
Thank you
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
I just bought a 2022 CR-V hybrid and really appreciated this tech deep-dive thank you!
Thanks for breaking this down Professor Kelly, very professional and very informative.
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
Thank you! This is absolutely splendid. The only clear explanation I’ve found of how the Honda hybrid system works. Seeing the disassembly/reassembly sequences really helped clarify operations-especially for the E-CVT mode. A++
Thank you very much
Keep in mind that this is i-MMD; there are at least two other Honda hybrid systems.
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.
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!
You are a fantastic teacher! For a non-engineer like me, this was so easy to understand. Thank you !
You're very welcome!
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!
Thankyou thank you thank you!!!!! I watched three times in a row!!! Our family has 2018 Clarity with this system... You revealed all!! The Park mode...why it rolls a bit in that mode. How the single direct engine gear clutches, over course how it all inter relates... The regen power through main motor!! How the Generator inter relates.... Wow wow!! We love our vehicle .. This tech would be so cool in marine environment... I love the way there are no belts or external alternators etc...
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.
I just wanted to thank you for doing these videos. Your ability to clearly explain complex mechanisms is matched only by your technical rigor. Kudos.
Thank you very much
Thank *you* for sharing your gift with us, Dr.
If I got a teacher like this back in my school days, I will driving a Rocket proportion engine drive at mars.
Amazing teacher you are....
Thank you very much
I have today ordered a UK Civic e-HEV so your clear explanation is timely. Thank you very much.
Congrats, professore on the new digs!
I’ve been re-watching your Bolt deep dives this past week every night. My wife thinks I’m nuts.
Great content. The coolant has given me a craving for orange crush!
That is awesome! Thank you
I have to tell you, your work has raised my interest in replacing my BMW ICE vehicle with an EV.
I love the simplicity, efficiency and performance of an all electric. The upcoming VW ID.4 looks great as the RWD driving dynamics and quality construction looks to be top notch. Plus they’ll be constructed in Chattanooga plant, USA.
Wow, thanks so much for your demonstration. Now I understand how Honda have built the transmission/ motor assembly without a 'gearbox'. A very tech subject explained brilliantly. Thank you
Actually it IS a gearbox but very few friction parts. The Toyota version has NO internal clutches at all, this one has one set of friction plates. Either has much fewer parts that can fail due to friction.
Congrats on the new building and what an excellent breakdown of the new Honda system. It seems Honda hasn't been as asleep as they appear to be when it comes to electric vehicles in recent years. Thank you and I look forward to learning much more in the years to come.
Much appreciated! Thank you
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.
Such tech could not be better explained. Great work!
Thank you very much
Thanks for your sharing. Only a genius like you can explain such an advanced and technological system to common people. I wish you the best
Much appreciated, great effort and well explained. I think this is such a great design compared to the standard hybrids , and it's more of a transition toward electrifying Honda vehicles moving forward
Totally agree
When Honda used to participate in the world Solar Challenge (Darwin to Adelaide) I was astounded at the quality of their builds! The Honda Dream was something to see!
Thanks for watching
These videos ROCK! glad to see you back!
Thank you
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.
The one thumbs down is the bloke that pulled one of these down BEFORE watching John explain it in detail.
lol, must be
LOL!
Профессор, благодарю за разъяснения!!
Очень доступно и понятно объяснено.
Желаю Вам здоровья! ✊🤝
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.
I really enjoyed this video, and shared your excitement. the more you explained this the more it became evident why this is so well thought out and exciting, thank you for taking the time to educate people Professor.
Thank you!
Another great demonstration professor! It's happy to see interesting videos like this. Keep it up. God bless you!
Thank you very much!
Not sure why this was recommended, but I watched the whole thing. Fascinating! You made it real easy to understand.
Thanks for watching
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
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 😁
10:30 I totally thought you were going to make a Back to the Future reference. "When you hit 88 mph, you're going to see some serious shit!"
LOL
Sure,we’ll walk through automotive technology with professor !!
Excellent instructional video! I recently took delivery of a 2023 CR-V Sport Touring (Hybrid of course) and would love to see a video by you of the fourth generation hybrid system which has the two motor offset to shorten the length as well as a two speed lock-up rather than just the overdrive gear. Honda claims the addition of the new low speed lock-up allows for towing up to 1000 pounds. I don’t plan on ever towing anything with a CR-V Hybrid but I’d love to see what the system looks like opened up like this. Again, fascinating video.
When I watch your videos, it 's like eating a delicious cake. I enjoy it very much.
Thanks a lot
Thank you very 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.
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