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4th generation coming 2015!

Discussion in 'Gen 4 Prius Main Forum' started by edmcohen, Nov 6, 2012.

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  1. dorunron

    dorunron Senior Member

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    Fair enough, will wait and see. FWIW, the new 2015 as I have stated do NOT look much different than the 2013 or 2014.

    Sorry for the confusion. I had heard 2015 was going to be when the new Gen IV was to come out.

    I stand corrected now.

    Peace everyone,
    Ron
     
  2. TonyPSchaefer

    TonyPSchaefer Your Friendly Moderator
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    You are not far off, Ron, and the confusion is understandable. There WERE rumors a couple years ago that perhaps the Gen4 would be released with the 2015 model year. Unfortunately, that has not come to fruition. In another thread, we are speculating which 2015 car show will be chosen for the Great Reveal.

    I have a feeling that when the Gen4 is finally revealed there will be no confusing it with any existing Prius. I base this on the chasis and body changes we've seen between each of the previous generations. I mean, the Gen3 still has styling queues from the Gen2 but there is no confusing the two.
     
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  3. Ashlem

    Ashlem Senior Member

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    I almost wonder if you didn't look at a Plus Performance Package equipped prius, which gives it a much sportier look.

    I'll admit it looks pretty awesome, and I probably would get the kit despite the price. The thing holding me back however, is that it lowers the prius about an inch or so. Which is bad if you live in an area that gets snow like Wisconsin. In southern states though, I totally would get it for the better handling and sporty look.

    Performance Plus Package ground clearance? | PriusChat
     
  4. bisco

    bisco cookie crumbler

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    i think if the IV looks as much like the III, as the III does the II, some people will be disappointed.
     
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  5. 70AARCUDA

    70AARCUDA Active Member

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    FWIW, Toyota had the AWD Matrix but axed it, so WHY would they re-introduce a concept they've already discarded?
     
  6. usbseawolf2000

    usbseawolf2000 HSD PhD

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    Matrix had mechanical AWD. Prius is supposed to have electrical one that increases fuel efficiency (see Highlander hybrid 4WD).

    Tesla did something similar with the Model D.
     
  7. Tideland Prius

    Tideland Prius Moderator of the North
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    Here's another application for electric AWD. It's pretty ingenious if you think about it. Kudos to Honda for coming up with a system such as this.

     
  8. 70AARCUDA

    70AARCUDA Active Member

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    One wheel driving while the other three are regenerating is a TOTAL waste of energy...because that single driving wheel has to generate power to overcome the DRAG of the three other wheels in regeneration mode!

    Nice IDEA, but lousy ENGINEERING.
     
    #3108 70AARCUDA, Oct 24, 2014
    Last edited: Oct 24, 2014
  9. Mendel Leisk

    Mendel Leisk Senior Member

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    It's great and all, but I'm still blank about it, manage to make it around corners now, with minimum theatrics. It's new, it'll cost, there will be problems.
     
  10. Tideland Prius

    Tideland Prius Moderator of the North
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    Actually it's a great idea and well implemented. I'm neither and engineer nor have I been around a race track (but I've played enough Gran Turismo to know my way around a virtual track). I can see you don't understand how it works in that exact frame. You think cars like the GS430 and the E55 AMG don't do this?

    The idea is to use the electric motors in the rear to fine tune the power delivery or braking abilities to get the car around the corner.

    As you approach a corner, you brake in a straight line, you go around the corner then accelerate after you pass the apex. It's all fine and dandy in theory. In practicality, you have to deal with physics. The outside wheels want to travel faster than the inside wheels (because they're travelling along a larger arc so need to travel faster to keep up with the inside wheels). In a RWD, when you accelerate out of a corner, you're applying equal power to both rear wheels, power is wasted going to the inside wheel so there's a greater chance you'll spin the inside wheel (or TRAC will cut power). A limited slip differential can mitigate this somewhat by locking up power going to the inside wheel and sending it to the outside wheel. (You may have heard the term "Torque Vectoring" thrown about in marketing of new AWD vehicles. This type of system is able to vary the torque side-to-side to the rear wheels, a more advanced version of Subaru's AWD system).

    What Honda has done here is essentially torque vectoring but with two rear electric motors and one in front. As you transition from braking into the corner to acceleration, it sends power to the rear outside wheel first (the screenshot preview in the video above) to provide stability and the best cornering abilities because you're slowing the inside wheels which will help the car rotate in the direction you want and you're sending power to the outside wheel that has the most grip (rear, as opposed to the front which is steering). As you corner, it'll still brake the inside rear wheel to tuck the car into the corner but can slowly transition more power to the front as the fronts get more grip. As you exit the corner and straighten out the steering wheel, it'll send more power to the front and then finally to the rear inside wheel as you head down the straight. It does all of this without using the brake pads like conventional vehicles but rather with regenerative braking so you have at least some extra juice in the battery.

    Hopefully that helps explain the system.
     
    #3110 Tideland Prius, Oct 24, 2014
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    scripto, mozdzen and Felt like this.
  11. HTMLSpinnr

    HTMLSpinnr Super Moderator
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    If three wheels are regenerating and one driving, chances are the driven wheel is getting its energy from the other three. Think of it more as a transference of energy rather than fighting with each other.
     
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  12. 70AARCUDA

    70AARCUDA Active Member

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    That's an acceptable description, but it is NOT what the video and graphics where claiming/showing.
     
  13. dorunron

    dorunron Senior Member

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    Ashlem,

    If you are referring to the car I looked at, I doubt seriously it was a package deal as you mentioned. This car came equipped with the Bridgestone Ecopia's on it. IIRC they were the 15 inch rims also. Had the cheap plastic wheel covers with the black wheels underneath. One thing that was on the car that was a surprise was the OEM body side molding. It did lack the lower door moldings that I added to the 2013 I have now, and it also lacked the rear bumper scratch guard. It also did not have tinted windows. Not sure if the package you mentioned comes with the window tint or not. What I will say is this, I liked the car so much I actually took the stock number and VIN with me before I left the lot. I seriously thought about it for two days before deciding to keep the six (6) month old 2013 I have now. It is serving me well, giving excellent MPG and hauls anything I can fit in the backend. I was really impressed with it on this current road trip. I crossed the divide with it yesterday. The Prius made it with NO problem. I did drive slowly though and respected the machine. Gave it a good bath today and she looks show room new once again. Spending another night here in Grand Junction, CO. Not sure which way I am going next, but I know our Prius will get us there safe and sound while delivering excellent fuel economy. Last tank was all mountain driving and crossing over Monarch Pass which has a elevation of 11,3XX feet. I was travelling east to west. I filled up in Trinidad, CO that morning. Drove 376 miles which got us to Junction and a little around town driving. That tank actually came in at 55 MPG. If that is not amazing, I don't know what is. I will update my fuelly when I get home. I will also post pics in the string I started earlier today in the MPG section of this forum.

    Again, sorry for the confusion I started. Yes, I was one that was fooled by the rumors... Fact - 2015 model year is NOT a Gen IV Prius. Still a typical Gen III.

    Peace Everyone,
    Ron (dorunron)
     
  14. 69shovlhed

    69shovlhed Surly tree hugger

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    that cartoon they made is an oversimplification-- just to give a vague idea of what they're doing.

    In the near future I expect to see a lot of cars with each wheel having its own motor/generator.
     
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  15. HTMLSpinnr

    HTMLSpinnr Super Moderator
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    To keep to thread topic - I'm not sure if Prius would ever be a focus of independent torque vectoring for handling purposes. AWD, perhaps, but probably not independent motors.
     
  16. TomSwift

    TomSwift Member

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    If I recall correctly, the only hybrid Highlander offered now is the AWD version, so there is no FWD version available for a direct comparison. If one looks at the Lexus 450h, the FWD version is 30 mpg combined (32 city, 28 highway) while the AWD version is 29 mpg (30 city, 28 highway). So for Toyota, going to AWD, even if it is an electrical AWD, still has a fuel efficiency penalty.
     
  17. usbseawolf2000

    usbseawolf2000 HSD PhD

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    Ok, I was going by the last gen of HH.
     
  18. 72fordgts

    72fordgts Member

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    I for one would like to see an AWD option. Our Prius is primarily driven by my wife and we have a young son and maximum safety is very important. We also live in an rural hilly area with harsh winters. Our Gen III does alright now, but lets just say we're lucky to have a 4WD truck as well. I don't think a 50:50 AWD is needed, but one with a little power supplement at the rear via electric motor would help very much in poor traction environments.

    My other big complaint about the Gen III we have is I would like to see better highway performance at high speeds (70-80 MPH). We have some large highway hills in our area, and the droning when climbing hills from the ICE is irritating. It also seems to work a lot harder in the same hills our old Civic used to climb effortlessly. We'd be happy with more cargo room, but I am hesitant to step up to Prius V because with the same drivetrain it would be even more underpowered in the hills and on the highway.
     
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  19. Sergiospl

    Sergiospl Senior Member

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    Careful now! I think this spy photo is of the next Gen Volt!
    2016 Toyota Prius spy - New Car Review 2015 : New Car Review 2015
    toyota-prius-ns4-concept-hybrid.jpg 2015-toyota-prius-artists-rendering-photo-582284-s-520x318.jpg Nope!
    but I am betting on this front end, love it!
    Slim A pillar of the NS4, and I would not change much from the B pillar rearward of the current Gen.
     
  20. 70AARCUDA

    70AARCUDA Active Member

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    Reminds ME of Japanese-designed Catfish barbels!

    Top (purple) is the FCV and bottom (blue) is Prius?

    The GenII design is looking better & better every minute!
     
    #3120 70AARCUDA, Oct 26, 2014
    Last edited: Oct 26, 2014
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