What an amazing video and what an amazing assembly! I am an engineer and can't imagine how interesting and enjoyable it would have been to be a part of developing this Transaxle!

for a 'curious cat' like me - your videos/explanations are like a 'drug' - extremely addictive - and worth every second to watch.

Since I watch Prof. Kelly's educational video, I have earned two major courses which are clear English language and real-world automotive engineering. Far from across half earth's surface here in South Korea. Thank you very much, Prof. Kelly. You are my life teacher. Have a nice day every day. I will respect you.

Thank you very much for the video! I'm actually buying this vehicle and used this video to understand how this compares to the normal transmissions I'm used to seeing.

@WeberAuto

6 жыл бұрын

Thank you! Best wishes

Professor, thanks for the video. Started to watch out of curiosity about the design, stayed for the duration. Incredible detail, clarity of presentation and production quality.

@WeberAuto

6 жыл бұрын

Thank you very much!

@000OO0OOO0

6 жыл бұрын

Professor Kelly, do you plan to produce any other Pacifica videos?

@WeberAuto

6 жыл бұрын

I hope to, but gaining access to one again may take a while.

@000OO0OOO0

6 жыл бұрын

Oh, I see. I hoped that you had a complete van and just started with the transmission video.

@compu85

6 жыл бұрын

How do you typically get your "sample" vehicles?

John, your passion, knowledge and expert ability to explain these technologies in so much detail is (to put it in Italian) IMPRESSIONANTE! Big thanks for the time and effort you dedicate to your presentations.

@WeberAuto

6 жыл бұрын

Thank you very much!

I arrived here after researching towing ability of a Pacifica hybrid. Awesome video explaining the inner working of the transaxle!

@Ashkoren

4 жыл бұрын

So no tow?

Thanks for sharing all your example transmissions. What a valuable resource for technicians and engineers. What a long way power transmission has progressed in 50 years.

Up here in Pocatello, and love your videos. Im really fascinated with hybrids right now and especially the pacifica! Thanks and keep them coming!

@WeberAuto

6 жыл бұрын

Thank you!

Fantastic detail and production quality. Thank you for sharing your time and insights.

Grew up on Wildcat Lane remember taking a tour of the shop as a boy scout. Nice to see y'all are still on cutting edge of new tech. Thanks for Video

@WeberAuto

6 жыл бұрын

Awesome! Thank you! I have given many boy scout tours myself over the years.

Thanks for the vídeo! And also for your pronuciation and voice, it's very easy to understand you for a person like me not English native.

Thank you very much for the rich, detailed, and clear course Professor, looking forward to learn from your extended experience .

Professor John Kelly, thanks for the explanation of the Chrysler Pacifica Hybrid Transaxle full detail theory how the transaxle works, I'm a Chrysler Certified Technician, and none of my instructor explained much more clearer information than this, This video is very good for transaxle teardown video. Thank you, Professor John Kelly.

@WeberAuto

6 жыл бұрын

Thank you very much!

I just bought a 2018 Pacifica hybrid. And I love it. A great van. I received it 2 weeks ago and the check engine icon lite up. The dealer said that it was down 2 quarts of oil. They had it for 2 days to figure this out. I just got it back and the selling dealer said bring it in right away as they needed to go over it with a fine tooth comb. I dropped it off the day I got it from the other dealer. Maybe tomorrow it'll be my turn to have it. Oh yeah, you are a great teacher. Thanks for sharing. If I wasn't older than dirt, I would be driving up to Utah and attend your class. Opps I forgot , no wheels . Yet. Richard

@WeberAuto

6 жыл бұрын

Wow! Thanks for the feedback! Best wishes.

@CarlosRodriguez-hb3vq

2 жыл бұрын

A “great van”, brand new and down 2 quarts of oil in 2 weeks?

That was very extensive and highly informative and educative. Thank you Professor Kelly.. Namaste 🙏 from India 🇮🇳

John Another excellent review. I love it. I still remember GM's base brake course. You did a good job there too!!!!

holy wowzers this was amazing! thanks for sharing.... even at double speed its 45 mins :)

@WeberAuto

6 жыл бұрын

Thank you very much!

Great video Professor Kelly and I know your students should come out of your class well prepared!

@WeberAuto

6 жыл бұрын

Thank you very much!

Amazing video! Left me wanting to learn even more, thank you!

Thanks for your time and effort ❤️😊

Thanks you sir for really detailes and quality videos. you are best sir

@WeberAuto

6 жыл бұрын

Thank You!

Greetings from Romania, i film cars on a local KZread channel and your video lessons are the only ones where i can document more after having read all of the written materials about powertrains.

@WeberAuto

3 жыл бұрын

Thanks for watching

Thank you so very much. Excellent presentation. As a former technical instructor I know how difficult it is to perform and instruct. I am interested in buying the Pacifica hybrid and am more confident in my decision after viewing.

This was great jurney. Thank you!

Thanks for the very informative training. I have this transaxle in my 2020 Pacifica. It is a great vehicle. After seeing the complexities of this drive train. I am surprised that the hybrid Pacifica is priced just slightly more than the old-style all gasoline Pacifica. Plug-in hybrid is definitely the way to go in this minivan.

@slandshark

2 жыл бұрын

The hybrid style pacifica starts at $11k more than the gas style pacifica. I wouldn't call that 'slightly'.

Hi sir......! Thank you very much for another awesome video and nice presentation......!

@WeberAuto

6 жыл бұрын

Thank you!

Wow, Nice video. I just found this channel and really appreciate the time and effort you put into this Thank You. Liked and subbed!

Your the best, mr. Kelley.

@WeberAuto

6 жыл бұрын

Thank you! Have a great day

Incredible video ❤

Fantastic video!

Great professor. Very interesting all video. 👏👏

@WeberAuto

5 жыл бұрын

Thank you!

Thank you, Sir, again For Your Time.

Watched this video a year ago, it helped me understand the eCVT, and convinced me to take a chance on a 2022 Pacifica PHEV. Haven't regretted it yet, but I am interested in knowing why the PHEV is "not recommended for towing". The standard Pacifica is rated at 3600 lbs towing capacity. Thank you, Professor Kelley!

@PhilipRuiz144

2 ай бұрын

I’ve pulled trailers with my Prius before and the motor temps and inverter temps get really high. I assume that’s why they don’t want the extra load. No active cooling for the motors?

Great Job loved seeing it.

@WeberAuto

6 жыл бұрын

Thank you!

Thank you for all the detail. One thing I was hoping to see but missed, a description of whether or not the sprag setup enables the internal combustion to directly drive the vehicle, once the batteries are depleted, versus all of the mechanical power having to first be directed through motor generator 'B' &/or to the battery. Thanks!

Very interesting video Professor, thanks

@WeberAuto

6 жыл бұрын

Thank you!

Thanks for the info. Where were you when I went to tech school 😂. You're very knowledgeable and your students are lucky to have someone with passion teaching them.

always great, thank you ...

@WeberAuto

6 жыл бұрын

Thank you!

Thank You for doing this video!

السلام عليكم بروفيسور جون شكرا على هذا الابداع بارك الله في علمك وعملك .معلومات قيمة .

@WeberAuto

6 жыл бұрын

شكرا جزيلا

Proffesor, this transaxle looks like it could be the perfect 'bolt on' to transform many conventional ICE vehicles to be hybrid. Simply need batteries and the control module, it would be an interesting build

@WeberAuto

5 жыл бұрын

Thank you, it would be.

@imfloridano5448

5 жыл бұрын

I agree, it could replace the clunky zf nine speed

These videos are absolutely amazing and it blows my mind the knowledge you have and the willingness to share. This video and the volt video are my favorite. Quick question, do you know if this transaxle shares the same bolt pattern as the non hybrid 9 speed? It seems like it'd make sense as to save $$ from a manufacturing standpoint, but I am not sure how similar the transmissions are.

Very good .Prof. congratulations. Tanks.

Fantastic video. I wish my program had access to the latest vehicles for teaching and that our instructors had the time to go into this level of detail. Great work. Interesting to see the evolution away from hydraulically controlled gear shifting methods to motor controlled infinitely variable transmissions.

@WeberAuto

6 жыл бұрын

Thank you very much!

Sounds like the two motor drive & one-way sprag clutch is something that would be a common find in all Power-split trans-axles in PHEVs going forward - the Prius Prime & Pacifica e-Hybrid gets pretty good MPGe at freeway speeds vs. the Ford Fusion Energi which doesn't employ this tactic (but ironically the gen 1 Escape Hybrid did). In fact, the redesigned 5ET50 in the mk2 Volt also has a two-motor drive mode (but not using a PSD type trans-axle) only adds to my argument. Insightful as always professor Kelly.

@WeberAuto

5 жыл бұрын

Thank you, the 5ET50's 5th mode is PSD operation

Hello Prof. Kelly, The inverter gets cooled first by the antifreeze/coolant , after which the fluid then flows through the plate heat exchanger to cool the ATF. And you are right, the Thermostatic Valve is for Trans oil cooling only, not warming. Its reliant on self-heating due to friction and motor heat.

@WeberAuto

6 жыл бұрын

Awesome! Thank you for the feedback

@battousaihimura

6 жыл бұрын

You are welcome! Thank YOU for the excellent video :)

awesome video .. thanks a lot

@WeberAuto

6 жыл бұрын

Thank you!

ممنون از شما معلم خوبم .به امید خدا سلامتی‌تان را بدست آورید.

@WeberAuto

3 жыл бұрын

Thanks for watching

My name is Jeff Beck ,I have been a Heavy Equipment and Material Handling, and Automotive Mechanic, for over 30 years now retired. Let me start by saying, that I am most impressed with your description and training devices, you are using. I am hoping, that young trainies and veteran mechanics, take advantage of your knowledge you are offering. There is no such thing, as thinking as a mechanic, that you know everything, Iam 60 years old and still read technical manuals and watch videos available on-line, I wish I had, when young, the available knowledge base, that is available now. I only have one thing to add, the final drive ratio output, you described, will be a much higher value, when considering tire and rim size. while as you obviously know, the center of the wheel hub will be rotating at the same speed as the final drive, the outer diameter of the tire will be turning faster, that's why its very important to follow, the manufacturers recommended size of tires and rims, especially on Hybred Transaxles.I worked on Elecricic forklifts and associated electrical control systems, from resistor drive, to SCR drive and AC motor with inverter drive. Keep up the great work you are doing!

Thank you for the very informative video. It would be nice to see the battery too.

So interesting to see how my van works

@WeberAuto

3 жыл бұрын

Excellent! Thanks for watching

Oooooohh! "Trans"axle! How progressive on Chrysler's part. Good on them.

Mind blowing 🤯 great knowledge, thank you! Is this the same in a 2021 hybrid? I recently wrecked my van and it took a year to get everything replaced due to part shortages over the last year and labor shortage at the repair shop, but now it’s all physically repaired and at the dealership, where they are telling me the high voltage system needs to be checked out and may be in the harness. Also is there a sensor that cuts off power to the battery when it detects a collision? If so I can report this to them to help them get me back on the road with it.

Great info! Not that I would but I own a 2018, could we put a whipple or turbo on these things??? It's Basically a dodge charger v6 motor, thanks!

Profesor John D kelly gracias por sus vídeos son una gran enseñanza aunque en Latinoamérica nos queda un poco mas complicado comprender por el idioma si puede ayudar con poder traducir al español le estaría muy agradecido gracias por compartir su conocimiento su Chanel is my favorite

@WeberAuto

6 жыл бұрын

¡Muchas gracias! Si tiene la capacidad de traducir, puede transcribir el texto del video haciendo clic en este enlace kzread.info_cs_panel?tab=2&c=UCtr07mdKhsUwVJjL8Kw_q5A.

Thanks for these really detailed and quality videos. I just got one of these hybrids and, being new to hybrids, was curious how they operate. One thing I ran across in the service manual is the warning about spilling anti-freeze compounds on the HV connectors. The antifreeze is organic acid and they say exposing the connectors to this compound ruins them and they must be replaced which would be $$$$ and probably very hard to get. Is this risk common to the HV hybrid electrical connectors in other brands? Also, the case castings appear to be high quality (more like Honda's). I've overhauled a couple of the Chrysler 41TE's and they are typically pretty craggy with a lot of surface fins on the outside and a lot of nuances inside with orientation of tapered snap rings among other things. The differential carrier endplate and associated gearing looks like it is designed for much greater power output than for just the Pacifica. It will be very interesting seeing these used in work trucks particularly if they are designed to use the HV battery/engine as on-site power supplies. Service vehicles for contractors, firefighters, news crews, etc. The list goes on.

@WeberAuto

7 жыл бұрын

good point, thanks for your feedback!

Thank you professor for the great video and thorough explanation. How is the overall design of the system? How does it compare to a traditional ICE/ transmission setup? Would it be more prone to failure or could it last longer if properly maintained?

Thanks for the awesome video Prof Kelly! Are you going to do one for the Pacifica's HV battery as well?

@WeberAuto

6 жыл бұрын

I hope to someday, thanks

Thank you very much for this and all of your videos - I am still struggling to understand the hybrid mode power split: Motor B is always providing torque to the transfer shaft, ok. For the planetary shaft I need some clarification - The engine is providing torque which goes through the carrier into the planetary set. For planetary sets one of either the sun, carrier, or ring gear is supposed to be fixed - in this case none are fixed since all three are rotating - is Motor A rotating and supplying a torque in the opposite direction to essentially "ground" the sun gear? Is this what is meant by the eCVT? Motor A can change its speed and reaction torque on the engine to "ground" the sun gear in hybrid mode? Thanks and Best Regards

@WeberAuto

5 жыл бұрын

Thank you. eCVT = When motor A can spin faster or slower than the engine to vary the amount of torque the engine delivers to help motor B propel the vehicle.

Thank you professor. Great video. Next part videos Chevrolet Bolt...? IMHO Interesting vehicle

@WeberAuto

6 жыл бұрын

Thank you! More Bolt EV videos are coming soon. I am still waiting for some restricted parts.

Question for you. Like my Ford HF35 PHEV vehicle, this has a two conductor high voltage DC connector for the AC compressor. Does the AC compressor have an inverter embedded in the compressor to control the compressor speed? Have you disassembled an AC compressor from one of these vehicles?

Big fan of your channel! This vehicle has a Fuel and Oil Refresh mode that causes the ICE to run constantly until certain conditions are met, even if the battery is fully charged. My question is how does this transmission operate if the ICE is running but the wheels aren’t moving? Is the ICE spinning against that torque limiting clutch? Or are they spinning Motor A such that no torque is delivered to the ring gear to create a neutral gear even when the ICE is operating? Is the ring gear just being held by the brakes, causing the torque to go to Motor A?

Professor, you mentioned the Ford and Toyota designs placed their torque limiting clutches with the flywheel, while FCA's is located on the planet carrier. Are there advantages for one over the other? I wonder if the FCA design provides better protection for the sprague?

@WeberAuto

6 жыл бұрын

Good question. Obviously the Ford and Toyota versions would be easy to change in the vehicle. The FCA version is inside the transaxle. I find it interesting that FCA still has the damper springs at the flywheel, just like the Ford and Toyota versions. Thanks for your feedback. Maybe the FCA vehicle weight and engine torque were more than a single disk torque limiter could handle.

We use to call that spring a Belleville washer , in the torque limiting clutch pack .

@WeberAuto

6 жыл бұрын

You are correct, that is the correct name. I was wrong

Prof. John. Thanks for the great video. I have one of these vehicles and it is amazing how smooth the transition is from electric to ICE power. One question though that I didn't catch in the video is exactly how does this transmission achieve the 'variable' part? When I'm driving there are no 'shifts' felt - just a smooth power delivery. I still don't understand how that works especially when you add power from the ICE - how does the ICE rpm match up to the electric motor rpm? Certainly it isn't due to clutch slippage which would seem to not be very efficient.

@WeberAuto

7 жыл бұрын

Thank you. The variable part comes from the difference between the ICE rpm and Motor A rpm (and direction). When motor A spins slower (in the opposite direction) than the ICE rpm, there is an underdrive condition helping Motor B drive the counter-driven gear. When ICE rpm and Motor A rpm are equal there is a direct-drive situation helping Motor B drive the counter-driven gear. When motor A spins faster than ICE rpm (in the same direction), there is an overderdrive condition helping Motor B drive the counter-driven gear. I hope that helps.

@sunnypm

6 жыл бұрын

I agree that the power transition is smooth, but I can tell from a howling sound that the ice is charging the large battery. It's just loud enough to be irritating, and worrisome, especially at slower speeds and cold weather. I wonder if there is any good soundproofing that can be done?

@robertoguerra5375

6 жыл бұрын

The way I see it, the smaller motor “steals RPMs” at low torques at the planetary, generates some kW, then the power electronics feed the power to the large motor at low RPM but high torque.

Thank you

@WeberAuto

6 жыл бұрын

Thank you!

Since there's no tachometer at the dashboard, what would be the engine's RPM at 60MPH for this setup? Thank you for the insightful video.

@WeberAuto

6 жыл бұрын

The engine can be off at 60 mph if the battery has enough power. The engine rpm at 60 mph will vary depending upon the battery state of charge and the power requirements of motor B. At 1000 engine rpm Motor A would be spinning at -3688 rpm (charging and not assisting Motor B very much), At 2000 engine rpm Motor A would be spinning at 465 rpm (not charging very much and assisting Motor B), At 3000 engine rpm Motor A would be spinning at 4618 rpm (charging and assisting Motor B a lot). I hope that helps.

If I understand things correctly, the sprag "clutch" is there because a partial failure of come other components will cause the system to try to rotate the engine in the wrong direction. I would include in the "partial failure" things like a clutch not releasing completely or a motor/generator getting bad driving power.

Great video, professor. With the mechanical lubrication pump, do you think this would be a good candidate for flat towing?

Thank you for the awesome video. Could you please confirm (or disapprove) that this CVT-like variable torque transfer from input shaft to the wheels does require some energy taken from the high volt battery?

@WeberAuto

6 жыл бұрын

Yes, energy from the battery is used.

@Coolkeys2009

5 жыл бұрын

@@WeberAuto Surely any drag/slip provided by Motor A charges the HV battery or provides energy to Motor B? The only time Motor A should draw energy from the HV battery is to start the engine or assist Motor B? Wish these videos were around when I was much younger might have chosen a different career path.

@WeberAuto

5 жыл бұрын

​@@Coolkeys2009 Motor A can draw power from the battery in EV mode. In that mode both motors A and B can propel the vehicle under certain circumstances. That is why there is a one-way sprag on the input shaft. It prevents the ICE crankshaft from spinning backwards when motor A is helping to propel the vehicle. In power split mode power from the battery can be used to provide negative torque to Motor A to help control its speed while it is generating. Otherwise, you are correct.

Great video, all of ur vids!, but here is my question, so per spec the car can dump 120hp in all electric mode, and 260hp gas engine. If the generator can only produce 83 hp then u have 83 from engine in excess, that is 166hp.(assuming no battery help).. And if the traction motor tops out at 113, then u have 83+113,=196... Where am I wrong? I don't understand how 260hp gets to the wheels. Pls explain....

Thank you for the video. I watched your video on the Toyota hybrid motors and was impressed. This one I liked even more and has moved me in direction of the 2021 Pacifica plug in hybrid. Has anything changed in the structure or operation of the Si-EVT? Thank you again for the video

@WeberAuto

3 жыл бұрын

Not that I am aware of. Thanks for watching

Thanks Professor , Very interesting assembly. So if the speed of the engine is constant, then motor a Speeds up to cause the vehicle to accelerate. Hoping to find your video on Gen 2 Volt too.

very useful video, the only one on the Internet. Thank you very much! Is the Fluid Level Check Plug also used for filling oil, or do we fill it from the bottom, through the drain plug, under pressure?

@mojetmp5501

4 ай бұрын

I suppose I know already : On the front side of the transaxle midway up are two plugs. One is for filling, the second is for a special 90-degree dipstick for checking the fluid levels.

Sincerely one of the coolest videos I’ve watched in a long time fairy comprehending I’m just a guy that works on cars in the garage but I actually have a 2020 Pacifica highbred and I wanted to get some information about the transmission which you’re very used for a very enlightening me about what’s going on in it my question though is they have a drive mode and an L mode low and a lot of people say they’re driving around even on the highway in L mode low gear and I was wondering in the long run does that make a significant difference on the transmission to me it seems like it would work at even Harter even know you get the region from leading off the throttle at a high rate of speed to slow down any input greatly appreciate it thank you sir

@anderdd

3 жыл бұрын

Driving in L is just a software setting that increases the regen braking aggressiveness. So driving in L all the time isn't harmful, actually helps capture more energy.

Awsome

@WeberAuto

6 жыл бұрын

Thank you!

Thanks for the video, the next video about ford energi transmission hf35 please

@WeberAuto

6 жыл бұрын

Thank you, it is right here: kzread.info?o=U&video_id=hHU5xFOBcsU

Doesn't the sun gear receive torque from the engine? If so, doesn't this mean that motor A has to counter this in order to hold a constant rotation either + or -?

Can that valve on heat exchanger be one-way valve? So oil doesn't drain down when both pumps stop?

@WeberAuto

6 жыл бұрын

I had not thought of that. It could be. Thank you!

For coolant control, does the Pacifica use electronically controlled thermostat valves?

@WeberAuto

6 жыл бұрын

No, there is an electric water pump that controls the coolant flow through the inverter and the transaxle heat exchanger. Pump speed is modulated to control temperature.

Did you update something in the video? It shows I had already watched, plus there are comments from way before todays date.

@WeberAuto

6 жыл бұрын

I had just changed its status from an unlisted video to public. Some people accidentally found it earlier in one of my playlists. I shot the video last June.

Большое спасибо за информацию Я из Белоруссии

Great video, could you do the same with DSG dual-clutch system?

@WeberAuto

3 жыл бұрын

Thanks for the suggestion.

I know I’m a couple years late but thank you very much for this video my one question is I noticed at the top of my fairly steep driveway I have to be quick to touch the break or it will roll back very fast does that have something to do with this transmission style

@WeberAuto

3 жыл бұрын

Yes, absolutely

@John-209

3 жыл бұрын

@@WeberAuto it’s amazing they can get 100 hp out of something the size of a paint can. I’ve never had much luck with Chrysler transmissions I sure hope this one is better

tHANK YOU

Any way to get the temp sensors? I’ve got a low code

Great video Professor Kelly, was the generator also used as a motor in addition on demand under acceleration? If so, did it get 148KW (85KW+63KW) motor output in pure electric mode?

@WeberAuto

6 жыл бұрын

Thank you! Yes, both motors can propel under acceleration.

@brandongordon7893

6 жыл бұрын

First off, thank you Prof Kelly for taking the time to create such a detailed video on the transmission. I have a '17 Pacifica hybrid and I've had this same question. In my 6 months of ownership I've never seen the reported battery kwhs consumed increase beyond 85kw which just happens to be the power rating of the large motor. I've also never seen the battery charge under braking higher than about 82 kw or so perhaps that's the limit of the discharge/charge rate of the battery. I imagine if both motors are used perhaps one is more efficient than the other and they operate in tandem with neither operating under full load, but certainly the theoretical ~148kw electrical output I've never seen.

@tombradley9523

6 жыл бұрын

Brandon Gordon, thanks for your feedback. Long time driver experience through daily observation is the best verification how the system was implemented. I am interested in buying this minivan, I watched a review recently where the reviewer was saying the engine will fire up with with his heavy footed acceleration. I have a Prius plugin which does the the same. I suspect only the 85KW motor was used, if both were engaged, it shouldn't fire up engine. Prius Prime really used the 2nd motor with some clutch without changing the 2 motor specs. 145KW is like 190HP which should be enough to propel minivan without assistance from engine. Software limiting is another factor.

@brandongordon7893

6 жыл бұрын

Tom Bradley so at least on that front of being able to drive the minivan solely on electricity that hasn't been a problem; i routinely commute in mixed city/highway driving and never have the gas engine fire up. The way the car is tuned the gas engine will remain off when cruising at 80mph or below when you're calling for less than ~55 percent of it's power per its gauges. With the torque the electric motor provides 0-50 happens reasonably quickly but 50-80 takes about the same amount of time so you do need some runway to get everything up to speed. Through it's calculations I've average 44 mpg over the last 8k miles which has seen a couple 450mi trips without any electric charging, nearly complete electric driving on the daily and a mix of both on the weekends. It's no amg, but they sized the capacity of the electric motor very well. I've been very surprised with the general refinement of the system but here's two aspects that will annoy you which cause the gas motor to kick in. If it's colder than mid 40s or so the gas motor will spin up to provide heat for the cabin, which given the amount of electricity it takes to provide heat, could be considered smart. Second the radar cruise control is extremely aggressive in getting the vehicle up to speed; if you have a car pull out of your lane and you're more than 5mph off your set point, the system basically floors the van to get you back up to your target. It'd be much nicer if it simply held to the maximum of the electric output as frequently this is the only time the gas motor comes on during my commute. It's a vehicle I'd highly recommend especially for long trips, the ability to have a climate controlled cabin while streaming tv/movies for the kids when stopped on food breaks without having the engine constantly running is pretty slick.

@tombradley9523

6 жыл бұрын

Brandon Gordon ，I wish Chrysler put or at least offered another battery as an option to double the electric range. Prius Prime did it so I hope this would happen on the 2nd gen. In another 2 to 3 years there would be so many all electric SUVs available. Batteries are getting cheaper too. I wish Chrysler make the all electric Portal minivan a reality!

Had been wondering if you had any thoughts on why the auto builders went with hybrid instead of electric traction motor and onboard ICE generator.

@WeberAuto

6 жыл бұрын

I believe it is because it has been a slow evolutionary process. They took what they had (an ICE and an automatic transmission) and modified it with incremental improvements over the years. The Generation 1 Chevrolet Volt operates that way in 1 of its 4 modes of operation. The Generation 2 Chevrolet Volt operates that way in 1 of its 5 modes of operation.Thanks for your feedback.

@alext9067

6 жыл бұрын

Thanks for your response. Always find your videos fascinating.

Sorry about such a simple question but other variance of this 3.6 L put out 280 hp or so so why would the exact same 3.6 L engine with two electric motors have less total horsepower? Does that mean the ice engine is turned way down? Thank you

How many miles do these last ? Are all the manufactures the same quality steel and bearing ?

Exactly which part prevents engine rotation when operating solely in electric mode? What parts are rotating when in hybrid mode that are not when full electric? The input shaft, Torque Limiting Clutch assembly, and some portion of the planetary gears are stationary are they not?

Do you plan on doing a deep dive on the Tesla Model 3?

And oh by the way if any of these young people can’t learn from this guy they need to just go ahead and start digging ditches for a living incredible detail and simple dialect.

Professor, could you please introduce the gm/allison two-mode hybrid? Maybe the two-mode system is a little expensive?Thank you!

@WeberAuto

6 жыл бұрын

Thank you for your suggestion. Those systems are hard to find. Not a very successful system, not many sold. I will if I can every get one. Thanks again.

@user-iv9yp2dl8p

6 жыл бұрын

The system is complex，maybe people don't like it.o(╥﹏╥)o I know that new Lacrosse has the hybrid version, and the people in GM said that the cost is expensive and they can't earn money...There are some planetaries and clutches in the transmission.

Can you do a video on the rest of Chryslers high voltage system to see if anything differs to other's? DC-DC converters, battery packs, motor drivers? Thanks for the video! Very informative like all the others you have done! It's exciting to me to see the guts of how things work... though to this day, they may not be put back to operational order :)

@WeberAuto

3 жыл бұрын

Thanks for the suggestion

There is no way to describe how awesome this video actually is. I am currently looking at purchasing a used 2021 Pacifica Hybrid and was cautioned that these eFlite Si-EVT transmissions have an issue with an internal electrical connection that can short out and randomly cause the car to just shut down (Think 70 mph interstate with tractor trailer on your back bumper!) Chrysler issued a TSB on 4-5-2023 but do not yet have a fix for the 2017 through 2022 models. Word is that they "fixed" the January 2023 and forward models. Professor would you care to comment on which of the 5 internal electrical connectors might be the culprit? I am super curious on this and hope that you are still out there answering questions even though this video is many years old. Waiting with great anticipation! Tks D

@sammarmon3965

2 ай бұрын

I just had a failure on my '22 w/ 30K miles and they are replacing the transmission. This video is amazing and really was encouraging. In my case, I had a motor 'a' resolver sensor error that caused the PIM to not be able to control motor A correctly. It made a 'marbles in a can' sound for about 15 minutes before going into limp mode. I believe most of these transmissions are going to be warranted for 10 years and unlimited miles based on the recall. The recall is based on a connector shorting out. While I definitely had some odd noises for about 15 minutes prior to limp mode and malfunction lights, I wonder if there's actual physical damage possible due to not being able to control motor 'a' correctly.

@speedbird7976

13 күн бұрын

I just purchased a 23 model build 8/23 hoping that it will have many trouble free miles.

Just bought a 2018 model. Excellent video! I may be showing my ignorance, but I don't understand the sizing decisions on this transmission. To me, the single input shaft and splines seem so small to carry so much torque relative to many of the other components, especially that big honking final drive gear. Is this normal? I worry about shear strength and fatigue on that input shaft. Also, I would love to know the reasoning why the clutch pack assembly is a necessary component within this system and what set of circumstances would cause it to slip. Perhaps only if the vehicle load rating were exceeded (towing?), thereby providing a less expensive point of failure as well as a smoking gun (or clutch pack) against honoring warranty claims that would arise from towing? Or is there a more common scenario that us owners could watch out for and avoid to help prolong trans life?

@apersonontheinternet8006

4 жыл бұрын

I was watching this last night and reading through the comments and figured I'd get you an answer. I'm a machinist and I make a lot of turbine parts, but most of my parts are input and output shafts, trip bodies, governor vales and other cylindrical components other an indexer on my mill. In this video at 2:45-3:00 you will see a jet turbine engine and where it's input shaft is located - kzread.info/dash/bejne/YoyGyqWwm5q-qrg.html Make note of the size of the turbine, it's power output and the seemingly small bore that the input shaft goes into on the center of the face of the turbine. You should notice that the input shaft on that engine isn't all that much beefier than the one in this transaxle. The input shaft on this transaxle is more than enough to do it's job. Idk if you'll ever actually see this so I won't get into the weeds of how that works unless you happen to come back and ask.

@dougandlaurawhite

3 жыл бұрын

@@apersonontheinternet8006 Thanks so much for that explanation and video! I also did some searches that seemed to highlight how small these shafts seem to be relative to how much force they convey, so I guess it's not always about size. There must be something to the type of teeth used and maybe high strength materials? I'd still love to have someone weigh in on the purpose/need for the clutch pack in this system. Perhaps it's there as a way to introduce just a bit of "give" in case something torques too fast, an electric motor perhaps, to avoid stressing the gear teeth in the system?

I was under the impression GM had consulted FCA to build the Pacifica with technologies from the Volt. Yet, I dont recognize the components at all. Any indications some of it came from GM?

Thanks for the video! Don't take apart the magnetic rotors, get some magnetic viewing film... You will love the stuff I promise.