This is a discussion comparison and demonstration about the differences between the first second and third in fourth generation to reorder automatic transactions used in their Harvard electric beer it’s the first- and second-generation Prius used the p 111 NP 14 transactions and I've got a separate YouTube video on the second-generation Prius transactional first generations for summer the second one was beefed up a little bit more handsome addition barings but right here on this branch I've got some of the components up the harbour transactional for me second-generation previous and then on the back side here at the same components from the third generation priest transactional the highlander transactional Camry transactional a they're all the same design their there's different durations a and different sizes of these components but over all others there's really just the design the original design ahead P power split device planetary gear set and then the second design second third forth and so on that not only contain that the planetary gear set for power split but it also contain an additional you're set for motor speed gear reduction for the MG one more so what I'd like to do sure the diff sure yet the differences and compare the first design without with more speed reduction planetary gear set and to the secondand later designs with the planetary motor speed reduction a cure said soul right here on the first generation first- and second-generation transactions for the previous we've got the clutch discs style damper we've got your personal plate that keeps that permanent your flight who were looks like a manual transmission flywheel the balls right to the crankshaft I'm so this acts as a a damper for the engine starting and stopping the chain rapid changes in electric mowers the gym and so on that's the the first generation design first- and second-generation Prius the the third generation thats used in the Highlander Camry %uh the third generation previous and so on has the same clutch a plate and first to play but it's all in one assembly here we still have the damper Springs the clutch disc we can still see the material inside their but its permanently squished with the pressure plate to install all in one unit rate here them the flywheel is very much like the firstgeneration first and second generations balls were to the crankshaft but always a little bit larger this particular transactions transaction was the P 310 a RV 2008 a highlander or a lexus rx hard and so if you're recall the purpose ok the clutch damper here in the hybrid system is to drive the planet carrier and so on the first generation first- and second-generation transactions for the previous we have the input shaft to the transactions lines right into the clutch this in the third design transactional we have the same thing pics to splines run into the bunch clutch disc also she can see some similarities there a the third design hasn't oil pump drive and a little teeny oil palm that isdriven anytime the engine rotates are which is only when the engines running working battery is fully charged in your decelerating going downhill we don't have the engine running but it's rotating maddox is a whirlpool on the first design we also have an oil pump driveshaft the connected right here on the back the planet carrier and had its own same style oil palm on the back who backdrop okay now up you get these pieces are so the next I want to compare his motor generator number one here's motor generator number one from first and second-generation previous transactions that has the power split the device planetary gear set and motor generator one is connected to the Sun gear its the sport were three pieces a planetary gear said we have to have a son here we have to have the planet carrier with the the plan opinions and we have to have a review but I want to show you comparison OMG one you need third-generation up transaction design has the pair split device but also the motor speed reduction planetary gear sets would actually is going to have to planetary gear sets but the function over mg/1 motor generator number one is the same attacks as the starter motor for the engine it turns the Sun here just the same as the previous

designs you can see it a little bit thicker it stator courses little bit thicker that goes with it and they are very close to the same outside diameter so we've got the motor generator number one which is very strong a rotating magnet that is axes the alternator for the charging system for the high-voltage battery and the star model to start the internal combustion engine as necessary miss like these back and we hear now I'm gonna bring in the motor generator number two peace so for the first and second generation previous this is motor generator number two considerably larger stronger more powerful motor generator number one so more mg/1 motor generator one this is mg two more generator to and the Java mg2+ is to rotate the Sun gear her I'm sorry this this ring years now some some years earlier so put that ring here right there splines on these teeth right here explain to another gear in on the 1st and 2nd generation Prius there's actually a chain drive to goes to the final drive I don't appear in the final drive looks like a timing chain offer a over the engine and so when this look electric motor the same to you to more terms then the vehicle will move well the the second generation I'm sorry the third generation transactional also has an MG to and when we make room for that get through this first generation you warm you warship you very strong magnets right here's our mg2+ from the 2006 in a bow a highlander 2007 and abovea Camry the 2010 and above previous is the all have on a little bit smaller mg2+ not include prissy the priest be the previous plugin a hybrid vehicle so the the job at the Mt JMG to if you re remember on the first and second-generation Prius was to drive dreamGEAR a and then the MG one drop the Sun year and internal combustion engine wrong the the planet carrier a mg2+ in this newer design a transactional also drives reviewer but it has an additional planetary gears so we we already have on mg one back here where we have no name G one the Sun your but we've got another son here right here that's gonna go in ng2 so this third designed a transactional has to planetary gear sits the year the regional design one which is the power split device to allow the engine pork and the electric motor torque for from mg2+ MMG want to help propelled vehicle am church battered start the engine up this burgers up with the additional motor speed reduction a cure said is a planetary gear set we've got a son here we've got planet carriers reply carrier with five planetary opinions rehear put that on their in them we have giver mg2+ my first moment then we've got the rem year that's par up the motor speed reduction you're set but nor is it is directlyconnected to the rain gear were the power split device let me get the first design transaction polio venture on soul we have the internal combustion engine with the torque damper that is going to drive the planet carrier for the the power squid device portion over transaction and then mg/1 just like with him for the first and second generation Priuses drives the Sun gear right here so we've got a son here we're gonna rain gear got planet gear that's par the power split device but then it term at over on the other side up this same component we've got another room here so we've got the rain gear we've got the planet carrier we've got the the Sun year that's all par old what we call the motor speed reduction here said and so put that together it's considered great on their like Mac okay soul we've got mg2+ driving hearing your right here on the third-generation third hirties I'm transcendental does the exact same thing as the first design mg 28 driver arranger so mg2+ driving rain gear that spark or that his party the three pieces that the planetary gear set for the power split the bars the only difference here besides their physical size is that on the originaldesign when the mg2+ motor maybe one rotation the rain gear also made one rotation on the second design also in the third design transactional now since we've got that additional motor speed reduction gears planetary gear set in there one turnover the mg2+ does not equal one turn up the ring here for the power splitter bars instead it's going to take a to morning 478 so almost

two and a half turns love the mg2+ to give us long-term love the rain gear now that speeds up mg2+ a which also gives us to work more complication up about two and a half to one so this is a more powerful transactional in the third-generation Prius the in the islander in the Camry a its has more torque because you have the additional your reduction you but if you recall this is called the motor speed reduction planetary gear set it's not reducing the motor speed up mg what program do to you doing here it actually ends up producing the motor speed OMG 1 and one of the big problems with the first generation first- and second-generation presupposes that when you got up to a certain speed the mg/1 which is typically 37 to 40 miles an hour the MG one electric motor would be spinning at its maximum speed and we would be forced to turn the engine on to reduce the speed of the mg one more in this design the MG one motor a is considerably slowed down by this additional yourselves matter fact a we used to for one turn up the original for first and second designs we would get 2.6 turns so the mg one 21 turning the mg2+ I'll on this design we get just a little over one term 1.05 turns OMG one for one term OMG to which means we can go to hire vehicle speeds like on the Prius plug-in hybrid which are ready to go clear up to 61 miles an hour now without having to have the engine come on and I suspect that's because a pre preventing

overspeed avenging to more so than in g1 alright soul let me get the first second-generation perched only occur for now were would just back to three pieces over regular planetary gear said we've got the Sun gear that took 2mg one which is our starter motor alternator we've got the planet carrier with his pinions that books to the internal combustion engine to the store damper in clutch and then we've got mg to right here that terms the rain gear but not with the direct drive anymore like the first injured second-generation transactions but with a 2.47 8 21 your reduction now I'm gonna put this a whole thing together and for in them all look at the year big your age so we're gonna take the planet carrier and it's going to fit just break down insider the rain here for you power splitters year ago user and then it got me its this over to this down mg/1 were here with the Sun gear is gonna go right up the middle about planet carrier and mash with the planet pinion gears and so now we've got mg/1 we've got the power split device planetary gear set we we have been motor speed reduction planetary gear set and then mg2+ by the way on this third design trends are excellent world we go to your governor the chain drive like to have a first- and second-generation Prius and went to a gear drive so anytime this cure rotates it turns out I look here that turns the final drive and propels the vehicle which by the way there are several different final drive gear ratios depending on whether it's the previous see which has think tallest duration: things like a 3.11 your racial their previous plug in hybrid as like a 3.21 your racial the previous be in regular Prius the Camry the the first- and second-generation third-generation Islanders and so on all have different durations but these durations are pretty much the same may reflect the power split device key ratios have been the same since 2001 on the on the original the previous soul all Toyota hybrid use the same duration along the power split the bars planetary gear set there's two gear ratios for the motor speed reduction your said they're all the same except for them the new there's there's two new transactions is a P-forty canopy 5 10 transaction the that come in the priest and see the p4 10 comes in the previous plug in hybrid in the p5 10 comes in the previous see and it has instead a one rotation I'll mg2+ you miss 1.05 rotations program do you want it's one rotational energy to yours is .9 rotations mg once or slows it down even more which is better for higher speed battery only operation okay grab some words here and we will sit this

transactional up and run you through durations gonna burn was on you and your who very heavy bump euro alright a.m. I'm also going to arm take the clutch disc clutch damper of a formal and put it on the input shaft up the plant carrier this will represent the engine speed to the engine this is our mg/1 our starter alternator a motor generator in this is a view to the pills the vehicle and so is laid out very much the same as the first and second-generation Prius remember once again this is third generation and above creas this is the highlander this is the Camry this is everything later from Toyota up for 2012-13 a that are verified so for and the big advantage here is this motor speed reduction gear set lets this motor mg to spin faster through gear reduction so takes lesswork and gives us more pork because its cure mold report multiplication through the gear reduction and it also slows down mg2+ which was limiting factor into one over here which is limiting factor in maximum vehicle speed on battery power only okay I've got some yellow up paint marks here you can see a yellow marker here in the yellow marker here is also your mark on the damper for the them for internal combustion engine no one thing that's different about this transaction is that in order for the motor speed reduction a gear set to work these logs right here are actually spline to the case and so all the rotating right here in my Marco these locks do not rotate at all so I'm just gonna take am lock them in place with a her locking pliers prevent them from rotating during you know demonstration here okay now when we first start the vehicle /url not start the vehicle but first power up the vehicle you up in it power button the internal combustion engines off so the planet carrier for the powersport device will not rotate and you put it in reverse you you want a backup I'm we will just simply attorney electric motor mg2+ one direction to back or so you put it driving or move forward them run the motor the other way but notice that as we were driving straight I'm not street driving forward were records watch this course the paint work on Mt to verses mg/1 member on the first and second-generation Prius Chris's that transactional one turnover mg2+ gave us two-point a six terms November g1 now watch how many terms we get so as we were accelerating mg to stores to rotate here comes mg2+ round one full-circle enormous mg one is just a little over one morn fall a rotation Mets 1.0 521 gear reduction overdrive actually through the more reduction gear set and the power split device yourself sores were driving down the road mg/1 her here can spend as fast as its limited to which is upwards of 12,000 rpm to work fourteen thousand I believe nor serve them: g1 isn't pending much faster really would've been spinning faster on the earlier first and second generation transactions 2.6 times as fast the gears rotating which terms or a eventually turns our final drive gear set him for pills the vehicle soul when we get up to a certain speed where we want two's to limit the speed evangi one because it is or were driven just a little bit them we will exert a force on mg one to make it rotate just a little bit faster and what that will do is norse with mg once turning MD to turn sorry md2 and mg/1 turning just a little bit faster now the internal combustion engine crankshaft is spinning and then we get our engine up to good its speed and with him happens to be the same weekend after him to you to going faster the internal combustion engine slower than the internal combustion engine a we can vary the speed of the internal combustion engine to very good to speed up the mgt long motor generator but rattling noise you're hearing is this a loose spring insiders damper weird but anyway for driving down the road were were we can have mg we have the engine of mg to propel the vehicle mg one does not really get overspeed into a considerably higher rpm to consider scan should concerned with her vehicle speed if we needed spin faster to charge the horrible battery more we can start to internal combustion engine by turning it faster with electromagnetic field the stator and on the previous plug in hybrid a its

the it's the same design it's my understanding that it just runs on lithium-ion battery pack until its depleted and then it switches to regular nickel metal hydride batteries that are still in the back in the normal location so that the transaction was in mourning different spores which batters forces propelling it the gear ratios just a little bit different so all that we can go clear up this to 61 miles an hour on battery power only before the engine has to come on work overspeed reasons most likely you mg2+ electric motor so this is been a review comparison and discussion of the differences between the the two basic types or hybrid electric trams axles the Toyota has produced they're the ones that have just the planetary gear set for the power split between theEngine mg 2 mg one so the first- and second-generation Prius is only in them all other Toyota hybrids not counting Lexus is produced it Oreos have an additional more speed reduction gearsaid but actually speed ok mg2+ but slows down in June 1 because it was the one that was over speeding anyway when you drove down the road and then these are just a little bit smaller more compact to balance better and have a higher RPM range the previous first- and second-generation produces these mortars remember to round 6500 rpm now these years summer in the Ranger twelve to fourteen thousand p.m. which gives us more Torkham higher vehicle speeds on battery power