Great explanation! I can’t believe how small it all is and that there is no cvt belt. It’s nice to understand my car more.
@Gades117
11 жыл бұрын
Watch these videos all the time this guy is a transmission PRO!!!
@lawrencekeesler7369
10 жыл бұрын
My first model Prius 2001; Second Prius 2011. Now I think I understand how the 2011 cruise control is able to slow the car preventing overspeeding on downhill runs, a feature I didn't discover immediately. Very useful function.
@shadwills8594
4 ай бұрын
Thanks for helping me to understand how these ecvt transmissions work. The design is so elegant and robust. So much going on with the torque controlling from the ICE and motors. Mind blowing to think about gearing to change maximum e-only vehicle speed. Very cool!
@afcgeo882
3 жыл бұрын
These are literally the most reliable transmission systems in the world right now, and you can see why.
@MaximC
2 жыл бұрын
I wonder how much less reliable 2nd Gen are compared to the 3rd Gen.
@afcgeo882
2 жыл бұрын
@@MaximC They aren’t less reliable.
@MaximC
2 жыл бұрын
@@afcgeo882 You sure? I've read the chain may fail. Why they changed it to direct then, for other reasons?
@afcgeo882
2 жыл бұрын
@@MaximC It has NO chain! Did you watch the video? Toyota’s eCVT are planetary gear sets, not CVTs.
@MaximC
2 жыл бұрын
@@afcgeo882 He did mention it, a chain in 1st and 2nd generation of Toyota's PSD/eCVT.
@PistonAvatarGuy
11 жыл бұрын
Mechanically, these are very, VERY simple compared to a typical car transmission. All of the complexity is in the electronics and they're proving to be pretty bulletproof.
@94SexyStang
7 жыл бұрын
Thanks for taking the time to make a Long video...everything today is Rushed and just sucks because you end up missing details! I prefer videos like this, where it feels like you're in a REAL classroom and have time to absorb it! Good stuff!
@WeberAuto
7 жыл бұрын
Thank you!
@WeberAuto
12 жыл бұрын
Hi, the motors are three pase AC synchronous (with permanent magnets on the rotor) . They are not induction motors, they are not DC, and they do not use brushes. The ICE is not held stationary, but it stays stationary when off by the engine's own compression, friction, and lack of momentum. It takes much less energy to turn the MG1 motor while in electric mode. The charge rate is turned down to a low level allowing MG1 to rotate with less effort.
@paulv8453
5 жыл бұрын
@WeberAuto. Thanks for the video. I was on the fence between getting the 2nd gen & the 3rd gen & now I'm going to pass on the 2nd gen. I also was hesitant on getting a Prius because I thought that it had a belt driven CVT. I feel a lot more comfortable about the decision now. I've also seen high mileage reviews & not one mentioned anything about the transmission or batteries failing.
@WeberAuto
5 жыл бұрын
Thanks, The 3rd gen is a great car
@VoiceAlertTexas
5 жыл бұрын
Batteries shot after 200,00 for sure.. I know.....I have a 2013 with 206,000
@paulv8453
5 жыл бұрын
@@VoiceAlertTexas Oh wow! I've heard that they make very good rebuilt battery kits for around $1,000. I think that beats all the other fails that a regular car could have.
@Philjj61
4 жыл бұрын
@Paul Stejskal No it can't, the whole point is the batteries powering the vehicle half of the time, it is more an electric vehicle with ICE assist.
@clc2328
3 жыл бұрын
07 Camry, 380000 miles, original battery still going
@itsalgud1459
6 жыл бұрын
Wow! This is extremely well prepared, well presented, demonstration. I just bought a Prius and, being an engineer, I need to know how it works. This and the simulation that’s available here are definitely clarifying this fascinating system for me. Thanks for all the hard work that obviously went into this. 👍👍👍
@WeberAuto
6 жыл бұрын
Thank you!
@GameReality
10 жыл бұрын
If people knew how insane geniously this is and work, everyone would buy toyota hybrid. It works just amazingly great.
@codemiesterbeats
7 жыл бұрын
its neat but if fuel economy is your game there might be better choices.
@elhigh
7 жыл бұрын
Not really. The Prius is pretty hard to beat. There are thriftier cars to drive but they're almost exclusively tiny, not available in the US, or no longer made - or all of the above.
@codemiesterbeats
7 жыл бұрын
either way, they are a bit "optimistic" with their mileage ratings.
@flagmichael
7 жыл бұрын
My wife's 2010 gets 50 mpg +/- 3 mpg all year long, even though most of her driving is short trips.
@cadman10000
7 жыл бұрын
My wife still gets the rated 47 MPG in her 2008 with 160,000 miles on it.
@mikechiodetti4482
2 жыл бұрын
The third generation is a better output flow with less rotational speed of MG1 and much more torque overall. Very good description!
@Bnad
3 жыл бұрын
Your explanations filled in a lot of the gaps in understanding I had after watching Niels Blaauw's excellent video. These two together cover the topic well.
@pagelk
6 жыл бұрын
Excellent explanation of the gen 3 gear set in the transaxle
@WeberAuto
6 жыл бұрын
Thank you!
@naspho3
5 жыл бұрын
Weber' your are only one i can get this information.. its is very important you to train or teach your knowledge to more people..
@wiredforstereo
5 жыл бұрын
"Very strong magnets" *sticks hand between them.
@PaulysAuto
6 жыл бұрын
Please keep making videos, very helpful and educational. Thank you!
@WeberAuto
6 жыл бұрын
Thank you!
@mikekittmer2630
2 жыл бұрын
That was so relaxing to watch for some reason. Oh, and really informative. We have a 3rd gen Prius and 3rd gen Highlander hybrid. Thx!
@cookaboorra
2 жыл бұрын
Very good ! but I have to say, perhaps it is because of this rainy Sunday afternoon, but he threw me in the quickest and deepest sleep I ever experienced in my life...
@bradcdavis00
10 жыл бұрын
Thanks for the video! I love my Gen II and my C. Amazing feats of engineering IMO.
@justinsincoise6693
9 жыл бұрын
very good explanation. that was a very good demo. I haven't a clue how it works. very good for Prius owners.
@WeberAuto
9 жыл бұрын
justin sincoise Thank you!
@ErickMartinSucre
5 жыл бұрын
Love these Hybrid transaxle videos
@WeberAuto
5 жыл бұрын
Thank you
@johnford3825
4 жыл бұрын
Excellent piece of engineering.
@kudzanai8015
9 жыл бұрын
I have observed and visualised one thing. From 26:38 MG1 is idling in reverse. To run the engine the MG1 field reduces its speed transferring the resisted ring gear motive force to turning the planetary,hence starting the engine which turns in a clockwise direction (in the video the engine is turning in the wrong direction). This confirms the namograph presentations upon running on MG2 and upon MG2 + engine. MG1 changes direction upon the engine running.
@WeberAuto
9 жыл бұрын
Kudzanai MG1 only changes direction with the engine running when the vehicle is stopped, otherwise, it will always rotate the same direction as the engine. Good catch on the entire presentation being shown with the components rotating the opposite direction as they should have been, It makes no difference in the theory of operation though (other than it is backwards). Thanks for watching.
@kudzanai8015
9 жыл бұрын
WeberAuto Alright. I had taken it from your P111/P112 presentation, though i now notice MG2 forward has changed owing to the motor speed reduction gearset. You have a wonderful initiative (video lessons).
@d942yd42
5 жыл бұрын
The IC motor (driving the planetary gear set) must rotate in the opposite direction from the electric motors (both driving sun gears). As the IC motor starts, MG2 must slow down, not speed up. You should re-edit the video to show this, including the IC motor driving the wheels with MG2 stopped.
@Teodolindo55
4 жыл бұрын
Weber Inst. Thanks a lot for the videos.. they are very usefull for us, people in the third world where innovations arrive a little late but unfortunely the tecnology for repair it is only for a little groups that prefer to hidden it and be only with the truth. Thanks to you and your org. we can have a better understanding for accomlish the repair labor. In case of electrical vehicles it will be necessary to develop an a very simple way to detect failures with help of a multimeter because other devces are or impossible to get them or innoperable due to lack of escolar education in the electrical area and in the mechanical. thanks once again...
@jayd7596
3 жыл бұрын
Great video! Watching this because i recently did a hard acceleration onto the freeway with my rav4 hybrid and was worried thinking it had a belt drive cvt.
@WeberAuto
3 жыл бұрын
Glad it helped! Thanks for watching
@bjornsonalcantara3013
Жыл бұрын
whats the problem of your rav4? i have same issues
@ggkohler
10 жыл бұрын
Thank you for doing this video. Great info!
@tubester4567
8 жыл бұрын
Nice presentation.
@WeberAuto
8 жыл бұрын
Thank you!
@adrianotero7963
6 жыл бұрын
Thank you for.your explanation was considering purchasing a gen 2 from 2009......but will hold off and purchase a gen 3.....looks like a more efficient and durable design.......
@WeberAuto
6 жыл бұрын
I agree, Thanks for your feedback
@carlosquiroz7819
3 жыл бұрын
Very nice explanation. And a very reliable design compared to automatic and cvt transmissions.
@JamesCopeland-i1j
20 күн бұрын
So, just two main changes, aside from various sizing changes: 1- unitized, clutch assembly (non-serviceable friction plate) 2-dual plane planetary, with independent ratios for MG1/MG2 Did I miss anything?
@Limitbreakur
8 жыл бұрын
good work Weber, this is hard information to find. I watched your whole video at regular speed and found it informative but i wish you'd work on your presentation a bit better as i didn't think to use 2x speed.
@WeberAuto
8 жыл бұрын
Thanks for watching!
@KevinDeschamp
11 жыл бұрын
Best videos! I understand the prius transaxle better. Thanks.
@kayao8349
7 жыл бұрын
you did a very good presentation! thank you!
@WeberAuto
7 жыл бұрын
Thank you!
@InterstellarMedium
8 жыл бұрын
Excellent presentation. It looks like planetary gears are becoming the norm on new designs of automatic transaxles (e.g. the 9-gear ZF 9HP, etc.) - perhaps the eCVT is the inspiration or are there other early examples of such planetary gear transmissions in automobile application?
@WeberAuto
8 жыл бұрын
Planetary gear set equipped automatic transmissions have been in mass produced vehicles since 1940. They are great to use because they are compact and can give many different gear ratios. Thanks for your feedback!
@andrewjackson9374
7 жыл бұрын
Great video. Excellent explanation.
@WeberAuto
7 жыл бұрын
Thank you!
@hsvenforcer
9 жыл бұрын
Brilliant video! Loved it very informative
@philk60
11 жыл бұрын
Exactly what you said, is what is so confusing. MG2 is mechanically coupled with the wheels, but the ICE is not. The only conceivable way for me to believe that the ICE can power the wheels is if MG2 where to provide a magnetic force to couple split which separates the ICE from the wheels. I hope I've simplified my question.
@hd221813
7 жыл бұрын
Really interesting explanation! What is the exact purpose of the oil pump, since this transmission has no metallic belts (Nissan, Toyota) or chains (Audi, Subaru)? Heat dissipation?
@WeberAuto
7 жыл бұрын
Yes, to circulate the fluid for cooling the stator assemblies as well as a small amount for bearing lubrication. Thanks for the feedback!
@DavidORiordan
11 жыл бұрын
Great review, thanks.
@pattimichellesheaffer103
3 жыл бұрын
Those oil pumps you showed are only for the transaxle, correct? I'm also confused why the MG2/MG2 can spin so high on PriusV (P410) but the internal combustion engine kicks on at a very low speed (like, 15 MPH) with the warning that you're going too fast for EV mode. The plugin version has *about* the same RPM limits as the MG1/MG2 P410, at least that's what it sounds like you said.
@Tranibob
12 жыл бұрын
Great video as usual. I was a bit scared for your fingers there at times.... might want to move this to a flat solid steel bench in the future. Sfety first ;-)
@felixruiz2838
9 жыл бұрын
Great video !! Thanks
@djgate
10 жыл бұрын
Why does the flywheel at the back have gear teeth when the Prius does not have a conventional starter? Why do they have a clutch plate is it a cheap way to incorporate a damper?
@georgelloyd2201
7 жыл бұрын
I've noticed that my Highlander Hybrid can operate at much higher speeds without turning on the ICE than a previous 2007 Altima Hybrid I once owned. Watching your videos I discovered that the P313 transmission in my Highlander is third generation and has a speed reduction gear set that reduces the rpm of the MG1 electric motor that was the limiting factor as to when the ICE had to start in previous generations like my Altima. Question 1: Under ideal conditions how fast can the Highlander Hybrid travel before the ICE needs to turn on? Question 2: I noticed that when traveling in EV mode under about 42 mph the EV light on the dash is illuminated. Traveling faster than that the EV light goes out even though the energy monitor pictogram shows the ICE as being off and the battery being charged by the wheels up to about 60 mph when my foot off the accelerator like when going down a hill. Why does the light go out if the ICE is off? Enjoy your informative videos - Thanks
@WeberAuto
7 жыл бұрын
Hi, thanks for the feedback. 1. The 2008 model I had was around 40 mph, but I believe that was a software limitation, not mechanical limitation. The Prius plug-in model with a similar transaxle could go up to 62.5 mph before the ICE came on. 2. Good question. I do not know. I believe the energy monitor was not always correct. You can decelerate at higher speeds with the ICE off.
@georgelloyd2201
7 жыл бұрын
Thanks for the reply. My uneducated guess is that maybe the EV light is programmed by software to only illuminate when the electric motor is capable of actually driving the vehicle by itself. At higher speeds even when the ICE is off while decelerating the software knows that there's not enough juice to do a powered EV mode(?). Also I mentioned that I thought that my previous 2007 Atima couldn't go over 42 mph in EV mode because of MG1 limitations. Looking at your videos I now know that the Altima had a P314 trans-axle and that it would be similar to my current 2017 Highlander Hybrid. It could have been shutting off the ICE while traveling at higher speeds as well but I wouldn't have noticed due to not having the fancy energy monitor that my Highlander has. I just assumed anytime the EV light was out that the ICE was running.
@josedomingolealserrano9207
7 жыл бұрын
es un placer para mi que me den a conocer estas tecnologías pero gustaría que las tradujeran en español, grasia
@WeberAuto
7 жыл бұрын
Thank you!
@riccccccardo
2 жыл бұрын
Myself I own a Lexus GS 450h mk4 with this technology in it.
@ravedjmixes6495
3 жыл бұрын
Thank you so much for your video
@nigelk780
2 жыл бұрын
Reliability remains to be seen. Inverters and the insulation on wired stators give trouble in large industrial machinery in my experience. Great explanation but did I miss how MG1 is controlled to its three states. I assume by playing with the stator coil voltages and polarity ?
@airgliderz
8 жыл бұрын
How wrapped my mind around how my Prius works. 1) The Atkins cycle ICE engine has very low torque because compression is very low which increases gas mileage by 20%. 2) The ICE engine is always directly connected to the drive wheels. 3)The gear ratio of the Prius us the same at all times and at all speeds. 4) Because the ICE engine is low torque and the gear ratio is the same at all times and at all vehicle speeds the Prius uses the electric motor to start the car moving, once moving the ICE can start sending power to the wheels. The engine can be running at zero speed. 5) The Prius has no clutch or torque converter to disconnect the wheels from any of its motors, all are directly connected at all times at the same gear ratio. (the clutch shown in the video us not controlled, it's always engaged, it is there to absorb drive train shock. There is no reverse gear. The ICE engine CA start while the car is moving in reverse or forward. What makes all this possible are the sun gears. The engine room very very little to maximize efficiency. If sitting still in neutral and you step on the gas the ICE engine does not change speed. When the car excel erases the computer determines how much power us needed to be directed to the wheels by the ICE and electric motor, as it accelerates the ICE engine rpm's remains fairly constant. Speed of the car is changed by how much power is directed to the wheels, excess power from the ICE is sent to the generator to charge the batters and during breaking. 6) A good way to visualize how this all works is the computer determines how much power is directed to the cars wheels to get it to move, accelerate. The planetary gear system that directly connects the cars drive wheels to two electric motors and the gas engine at all times is what makes all this happen by directing none, more or less power to the cars drive wheels.
@WeberAuto
8 жыл бұрын
+alan connelly Thanks for your feedback!
@celsostarec6735
7 жыл бұрын
alan connelly Another view: 1) There is never direct connection from motor to wheels even with pure ICEs (or there wouldn't be a neutral position without stopping the engine). Thats why there are transmissions. 2) HSD and eCVT, are names to new transmission types coupled to electric motors that can merge torque from all sources controlled by its clutches and planetary gear sets similar to an automatic transmission. 3) The use of late admission valve closing and a kind of Atkinson cycle is motivated to get higher thermal efficiency from the ICE. In other words extract more useful work from the same amount of fuel energy supplied, translated into a smaller BSFC (Break Specific Fuel Consumption). 4) BSFC is not constant, but a function of many variables including load and speed of the engine. There are sweet regions of best BSFC which are target for economy driving, as well as bad regions to be avoided for economy, noise, vibration, wear,... 5) Electronic drive of electric motors enable precise merging of torque on the eCVT allowing the upspeeding ou downspeeding of the vehicle without acelerating or decelerating the ICE. Thats why PCM algorithms avoid "aceleration enrichment" and ICE moving mass acceleration or deceleration using electric motors to add or remove torque from the system with the equivalent amount of electrical energy transfer to and from batteries. 6) By design, most of the time the ICE is operated in its sweet regions achiving from 35 to 40% thermal efficiencies in a gasoline powered small ICE which is a record. 7) As batteries are not cheap, total energy stored in this small hybrids won't allow for many electric only miles to be driven anyway. All the electric components are used to allow the traditional ICE adapted to Atkinson to run in it's sweet spots at best efficiencies relieving the ICE from the multiple demands in all regions of the load-speed map needed for "drivability" now supplied by the electrical motors. ICE is run like a stationery engine changing load within the best BSFC region when needed. 8) A variety of clutches, brakes, planetaries coupled to the motors in the eCVT is designed to allow best operation of those components and there use within its limits of speed, torque, current, heat,... 9) The idea can be easily applied to most ICE driven vehicles, if needed/desired. Its a point in the design space between the traditional ICE-driven and ER-EV like Chevy Volt with full electric mode capabilities. Both are handicapped in relation to pure EVs by the extra complexity when cheap practical EVs become a reality. 10) Hybrids like Toyota Prius enable the best use of our traditional liquid fuels lowering it's consumption for unit miles driven. ER-EVs Plug-ins like Chevy Volt enable displacing a large amount of liquid (fossil?!) fuel by electrical energy (source?) with the least amount of expensive batteries. Pure Plug-in EVs are the most efficiency all electrical driven vehicles with no ICE related overhead or overweight. All of them have a place in the transition of energy sources for transportation depending on external circumstances. All of them are beautiful engineering accomplishments. :-)
@hedgehogthesonic3181
4 жыл бұрын
@@celsostarec6735 That's really useful information, so seeing how the Prius works, is it bad push the accelerator all the way down? is there a chance of damaging something?
@celsostarec6735
4 жыл бұрын
@@hedgehogthesonic3181 Despite the Prius not beeing intended as a sports car, I suppose Toyota has thoroughly tested their project and put any needed safeguard in place.
@hedgehogthesonic3181
4 жыл бұрын
@@celsostarec6735 I see, thanks for answering. And since the gears of the Prius are fixed in place and only rotate, is a lot more robust and durable than the standard automatic transmission. I don't push the accelerator of my Prius all the way down, i try to drive as efficient as possible, but since i bought it used i wanted to know, i don't know who the previous owner was and how he treated this Prius.
@davidrestrepo3721
2 жыл бұрын
Sorry for being a little slow here but im having a hard time wrapping my head around something. For years auto manufacturers have attempted to make cvts feel like regular autos by fake shifting. This, however, is a planetary transmission thats meant to feel like a cvt instead of shifting??? Why?
@tl7259
5 жыл бұрын
Great video, thank you!
@brianb-p6586
Жыл бұрын
@27:39 the engine speed isn't varied to change MG1 speed - the point of controlling MG1 is to control the engine speed: increasing the generator load to slow down MG1 causes the engine to run faster, and vice versa.
@amramweismann6162
4 жыл бұрын
Should be a must video for all car critics with no understanding of how transmission work just-auto comment shit CVT
@danp9551
4 жыл бұрын
@WeberAuto Dear Professor Kelly, I have 2 questions please: How is the lubrication implemented? Is it splash lubrication? I see several caged, open deep groove ball bearings and I assume the planet gears use needle bearings. 2) I know Toyota WS (World Standard) ATF is used. How well does the lubrication work at cold temperatures? With the car stationary and the ICE idling high (1300rpm because warm-up), MG1 spins at ~4750rpm. When moving at 50mph, MG2 already spins at ~6000rpm. What if the car sat outside in winter at 5-10°F? Does the lubrication still work reliably? Would it maybe be a good idea to drive a bit slower during the first few miles? I could not find a PID for ATF temperature to monitor how long it takes to warm up. Thank you! Regards Dan
@vuhdeem
5 жыл бұрын
So is the clutch what allows the gasoline engine to run with the wheels stopped? Or is the planet carrier spinning with the sun gear but the ring gear is still?
@TheLookingOne
7 жыл бұрын
Good explanation. The Toyota 'CVT' is not a true CVT. Correct? All models of the Prius have only 1 gear--they do not have a high or infinite number of gears. Correct? The clutch only smooths the transition between electric and gas drive. Correct? The Prius never shifts out of or into its 1 gear. Correct?
@dogsbodyish1664
7 жыл бұрын
If you search around, you'll find an excellent animation which explains all. There is no clutch, as such (they're the only autos with no clutch or torque converter). However, there is a permanently-engaged clutch/damper, which is there to absorb occasional transient shocks between the gas and electric regimes.
@dogsbodyish1664
7 жыл бұрын
But, you're correct in saying there is only one "gear" ratio. And as I say, there's no clutch. Pretty clever eh?
@TheLookingOne
7 жыл бұрын
I bought a first gen (first in my clan). A while back, we did a 4 Prius shuffle in the clan. Toyota has great engineers. Just do not park on a steep downhill where you must back up to pull away. The amperage limiter will stop you.
@WeberAuto
7 жыл бұрын
The Toyota hybrids are not a belt-driven CVT, but they still act like a CVT in relationship to the engine RPM (engine running and contributing torque to moving the vehicle). However, when the engine if off, MG2 drives the final drive and the wheels with a fixed gear ratio (no CVT in EV mode). The clutch is there to allow a small amount of slippage at times between the engine crankshaft and the transmission input shaft (as the engine starts and stops) It also contains the damper springs to dampen normal crankshaft fluctuations. It is never disengaged. Thanks for your feedback.
@lakshmananpalaniappan8177
8 жыл бұрын
Hi ! Thanks for the in depth explanation....Can you explain the chevy volt hybrid transmisson?..it looks quite different than the Prius system
@WeberAuto
8 жыл бұрын
+Lakshmanan Palaniappan Hi, it is very similar to the Pruis transaxle except is has some clutch packs to prevent their MG1 from overspeed problems. The Volt also has a clutch pack to connect and disconnect the engine from the transaxle. Thanks for watching!
@mark-qi6di
2 жыл бұрын
Awesome video!
@robertonava375
5 жыл бұрын
excellent!!!! greetings from mexico!!!
@SG-wy9te
10 жыл бұрын
Great explanation.
@himidehamada4470
5 жыл бұрын
i do have prius 2013 2nd generation there is no energy flow and i have message saying hybrid sytem pr9blem message was inverter coolant pump i did change it but still the same problem can u please help me thanks
@WeberAuto
5 жыл бұрын
Have the car checked for trouble codes and go from there. If the pump was inoperative for too long, it may have overheated and damaged the inverter.
@himidehamada4470
5 жыл бұрын
thanks
@Joeteck
11 жыл бұрын
How does that get connected electrically? I don't see any connections on MG1/MG2
@harveyloveall7066
5 ай бұрын
The electrical connections are on the stators.
@kombaster9398
3 жыл бұрын
My one is 2016 and I'm wondering whether have to change the transmission fluid.Just looking about advice.
@kroatoaneight-four
3 жыл бұрын
Is this the one inside a 2013 Lexus ES300h?
@WeberAuto
3 жыл бұрын
No, but it is very similar. Thanks for watching
@manhtiennguyen4132
6 жыл бұрын
plz answer me . when you put gear shift at B position ,the generator drive the thermal engine and the engine applies torque to electric motor . So how to reduce the vehicle speed while the electric motor is still applied the torque ( electric motor connect to the wheels )?
@WeberAuto
6 жыл бұрын
The motor applies negative torque which slows the vehicle. See kzitem.info/news/bejne/xXmVt6qpmKWUh2U
@AbdulHafeez-cq6oo
2 жыл бұрын
good description
@skoda110
4 жыл бұрын
good video. thanks. excellent video
@norgiter
3 жыл бұрын
Thank you very much!
@WeberAuto
3 жыл бұрын
You're welcome!
@rcsebulba
11 жыл бұрын
when inverter drains more power from MG1 induce EMF brake in the power split unit like to an differential, that carries more mechanical power from the ICE to wheels and more electrical power from MG1 will go to MG2 and to battery up/down converter/charger , means linear power transmission without changing steps gear and using a lower RPM on ICE were the efficiency is better, so even if the system runs only with the ICE running without EV will still be more efficient than a classic transmission
@brunkcore666
11 жыл бұрын
I manage a fleet of camry hybrid and i am having problems with the mg1 and mg2 parts ot the transmission. Is there a way to replace them without being forced to by a complete unit. toyota has been no help in this manner and i am looking to learn more about this. thanks for any help and your time.
@электроник198
4 жыл бұрын
спасибо, понятно все объяснил.
@MasterManWithThePlan
9 жыл бұрын
At 9:40 I thought he just lost his hand between the two magnets! Lol
@WeberAuto
9 жыл бұрын
chris hardway Thanks for watching! the magnets were strong.
@pec1739
7 жыл бұрын
thank you good sir
@WeberAuto
7 жыл бұрын
Thank you!
@djclown7pb
9 жыл бұрын
can you please explain to me the drive train of the 2015 prius, is it a electric motor that powers the wheels? and the reverse is only powwered by electric, not the cvt. I dont get it
@WeberAuto
9 жыл бұрын
+djclown7pb hi, this is the explanation. Reverse or forward can be electric only or a combination of electric and gasoline engine. Thanks for watching!
@sleekitwan
Жыл бұрын
So this was good, and just reinforces my ambivalent view of it having ‘CVT’ in the design/product name, from Toyota. Yes, it’s definitely a CVT, so tick box. No, it has such negative connotations and ties it to the conical-pulley-gap CVT designs, I almost didn’t buy the Prius I now have, because of this issue. In other words, this actually deserves the name but unfortunately that name’s already tainted. Strangely though, there appear to be discernible ‘gear changes’ on my 2010 gen 3 Prius. This could be illusory, and in fact be when the ICE drops out or in? Anyway, my real question is: what the heck is the ‘clutch’ with a friction plate for? Is it literally a cheap way to get a ‘soft start’ damped drive as the 1.8 engine cuts in, or does the friction plate ever get disconnected from the flywheel/facing surface? Dunno, seems like it’s permanently engaged, so makes no use of the friction plate, unless it literally has a point of massive force at which, the friction plate would in fact, be induced to scrape around, like some kind of over-torque safety connector in the transmission. I’m imagining it would have to be a total lock-up situation or something, and that limiting nature, might partly be there to prevent towing attempts that go beyond the design capability, seeing as this vehicle is stated as not being suitable for towing by Toyota in the handbook. Thanks though, great demonstration and lecture. Take care all. [EDIT: it’s okay, Prius Chat entry confirms what I suggested is true…Model: Three. The 'clutch' you see is a last ditch shock absorber in the drive train. It has no actuators and no part of the system can try to operate it, but in scenarios where the engine can't stop as instantly as the PSD, it can give way. It seems to be called the dampner. Prius 1st gen - Replacing Transaxle. end of Prius Chat quote…so it’s a safety-relief element in the drive-train. Mystery solved.]
@jamest.5001
4 жыл бұрын
Does the ice turn the wheels? Or only the generator?
@pmo5821
4 жыл бұрын
A bit of both. Output is the ring gear (driven directly through gear reduction by MG2), and Inputs are the engine (planet carrier) and MG1 (sun gear). You can vary how much torque the engine sends to the wheels mechanically by adjusting how much "resistance" MG1 provides. If it's totally off then when the engine turns the sun gear (MG1) will just freewheel, providing no reaction torque to send to the ring gear (output). If you increase the resistance (i.e. regen) on MG1, then it provides reaction torque to spin the ring gear(output), so the engine's power is split between the mechanical path (engine -> planet carrier -> "push against" the sun gear -> ring gear) and an electrical path (engine -> planet carrier -> regen through the sun gear/MG1 -> MG2 -> gear reduction -> ring gear -> output). At higher speeds MG1 and MG2 flip roles, with MG2 sapping away "excess" torque from the engine and sending current to MG1 which helps further overdrive the output. In this mode the MG's are trading engine torque for more output speed.
@grusiturbon
6 жыл бұрын
You sound exactly like the guy from Slavens racing!
@WeberAuto
6 жыл бұрын
Thanks for your feedback
@ggtontoyono
11 жыл бұрын
priceless video. Thanks a lot
@ToyotaKTM
11 жыл бұрын
Hi, what are the splines for that are on the MG1 side of the output gear on the power split device?
@mep3405
3 жыл бұрын
What's the weight of that MG2 on the 3rd generation HSD I wonder? Just curious about the power to weight ratio of these motors. Couldn't find that anywhere, but how he's lifting it around it doesn't seem like it would be any heavier than ~10kg?
@vamvakos
2 жыл бұрын
Is a 2008 transaxle compatible with a 2011?(Highlander Hybrid)
@tougewaja
10 жыл бұрын
good info video...thanks
@gacherumburu9958
6 жыл бұрын
👍👍👍👍👍 thanks
@WeberAuto
6 жыл бұрын
Thank you!
@trailblazeratv6306
3 жыл бұрын
Looks heavy duty
@brettbabin9758
9 жыл бұрын
How did you calculate the Gear Ratio between MG1 & MG2 to get 1.05:1?
@WeberAuto
9 жыл бұрын
+Brett Babin Hi, look up calculating planetary gear ratios on google. You will need the number of sun gear teeth and the number of ring gear teeth to determine the ratio. Thanks for watching!
@brettbabin9758
9 жыл бұрын
I know how to calculate planetary gear sets, but this is a CVT. How are you establishing finite ratios for a continuously variable transmission??
@WeberAuto
9 жыл бұрын
+Brett Babin Hi, If the engine is off, the planet carrier speed is zero rpm. The ratio between MG1 and MG2 is then fixed at 1.049. MG2 drives the ring gear at -2.478:1, the ring gear drives MG1 at -2.600:1. 2.600/2.478 = 1.049. If the engine rpm is not zero, then you substitute the real engine rpm for zero in the gear set calculation and that will change the speed of MG1. MG2 remains the same; tied to the final drive. In other words, the only thing variable about this transaxle is the speed of the engine and the resultant speed and direction of MG1.
@WeberAuto
8 жыл бұрын
The ICE never directly powers the final drive, it only assists MG2 in powering the vehicle. The amount of assist is controlled with the rotational speed of MG1. Thanks for watching!
@pinzgauernorcal
10 жыл бұрын
can you explain where and how the regen braking works and how the mg1 is used to start the ICE.
@djgate
10 жыл бұрын
Releasing completely or backing off slightly on the accelerator at speed turns the motor generators (through the ecu) into generators to recharge the battery pack. This resistance or electrical load causes a drag or slow down of rotation in the system causing the car to slow using its speeding mass to reclaim energy used to build its speed initially. Touching the brakes very lightly increases ( through the ecu) this resistance ( regen) even more without using the friction brakes. In a non hybrid doing the same cuts the fuel to the engine which produces the same drag slowing the car while not contributing any energy recovery at all. Using the friction brakes turns the energy into heat which is dissipated into the atmosphere.
@pinzgauernorcal
10 жыл бұрын
well i read somewhere that MG1 will spinn backwards when it charges or when you press the brakes is that true ?
@djgate
10 жыл бұрын
Highteckhobbies This link will explain in simple terms how it works... john1701a.com/prius/documents/Prius_Power-Split-Device_details.pdf
@muhammadmohib971
Жыл бұрын
Very nice 👍 Sir
@budhempfeld
11 жыл бұрын
mr kelly thanks for posting, very informative. what if a toyota highlander hybrid pulled a trailer equipped with mg 2’s front and rear axels, used only to charge a 201.6v battery in front (of the trailer) wired in parallel to the 201.6v battery of the highlander. also separate 12v system on trailer. is it possible to run the highlander, at proper speed and acceleration, on mostly batteries charged by tires turning on trailer ?
@synthyawylder3297
5 жыл бұрын
It's my understanding that you'd end up with a net loss; there'd be a 'conservation of energy' issue there. There's no such thing as a 'perpetual motion machine', which if I understand your question correctly, is basically what you're asking?
@MrN3gative
11 жыл бұрын
Well done. Thanks!
@FraitStin
6 жыл бұрын
Is a good habit to shift from Drive to Neutral at stoplights?
@WeberAuto
6 жыл бұрын
I see no advantage in doing so. Best wishes!
@FraitStin
6 жыл бұрын
Thank you! :)
@Sorent1993
6 жыл бұрын
Don`t do it, you shut Down all hybrid charging, so hy battery Can get to Low a SOC (from A/C comp and 12v charging), this puts Down a fault code, and shuts all Down :)
@MAYDAYDEEJAY
12 жыл бұрын
Gr8 video indeed !
@jfv65
9 жыл бұрын
clear demonstration. One question about that gen3 flywheel, the driveline doesn't have a separate startermotor so why does that gen3 flywheel have a ringgear??
@jfv65
9 жыл бұрын
+jfv65 btw, i have an 2011 Toyota Auris which has the Gen3 driveline, i can get the car to drive electric at up to 60km/h (35mph) but no higher. That seems low to me. Could that be improved by some software tweeking?
@WeberAuto
9 жыл бұрын
+jfv65 Hi, I have wondered the same thing, but there is no starter motor. Thank you for watching!
@kouts10
8 жыл бұрын
i am thinking of putting turbocharger on my yaris hybrid(ecvt).can work or i will have problem?
@WeberAuto
8 жыл бұрын
+Konstantinos Koutsoumis It will probably work, but remember that the engine does not directly drive the wheels, so it may not do much for you. Best wishes.
@kouts10
8 жыл бұрын
Thank you so much
@jjptech
8 ай бұрын
I always thought that there was no clutch on Toyota hybrids, I think I was wrong.
@SurferJoe46
5 жыл бұрын
A decent dialog would have resulted in much more clarity. It seems that the instructor wasn't totally up to speed on his material. Critically, I'd give the proctor a C- for his muddy presentation. Too bad, since this material is critical information to those of us in the trade who will need to be working on these assemblies.
@WeberAuto
5 жыл бұрын
Thanks for your feedback
@shchui88
11 жыл бұрын
amazing
@malshamotors9470
9 жыл бұрын
thank you I like video clp
@WeberAuto
9 жыл бұрын
Malsha Motors Thanks for watching!
@Stellectis2014
9 жыл бұрын
What is the reason for lowing the speed of MG1?
@MultiAlbo10
3 жыл бұрын
I NEED HELP... MY 2011 PRIUS HAS A ZOOM NOISE SIMILAR TO WHEEL BEARING, BUT ON TOYOTA DEALER DIAGNOSTIC WAS TRANSAXLE.....SO EXPENSIVE!! I LIVE IN LOS ANGELES... SOMEONE KNOWS A CHEAPER REPAIR OR BEST OPTION..... PLEASE....PLEASE.... THANKS
Пікірлер: 609