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Prius Plug-in and Volt Pros and Cons

Discussion in 'Gen 1 Prius Plug-in 2012-2015' started by Bill Norton, May 9, 2014.

  1. john1701a

    john1701a Prius Guru

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    Some of our strongest supporters emerged from initial misunderstandings. It's always a worthwhile exercise to talk through the operational details anyway. We've got quite a diverse audience and the forum has communications limitations. Things like the video are helping us to spread the knowledge.

    After all, the topic is about the differences between the regular and plug-in model. To recognize the benefit, we must first make sure everyone has a solid understanding of how the hybrid system itself works.
     
  2. Bill Norton

    Bill Norton Senior Member

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    When at steady state speeds MG2 is producing power that is consumed by MG1 for it to maintain the RPM the engine is at to produce the power required to roll down the road. It always takes electrical power to transmit the engine torque to the wheels, unlike a typical 5 spd manual transaxle which only has slight frictional losses to transmit the engine power to the wheels.

    And yet, the eCVT is way more efficient in the final product as it allows the engine to produce the required power at the lowest fuel flow rates.
    The engine is always at its most efficient RPM, throttle position, EGR opening, valve timing, ign. timing, etc.

    The eCVT is an amazing piece of technology. It's what got me to leave my TDI for a Prius!
     
    #482 Bill Norton, Jun 11, 2014
    Last edited: Jun 15, 2014
  3. bilbo04096

    bilbo04096 Member

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    Maybe reposting the nuts and bolts video would be helpful
     
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  4. GregP507

    GregP507 Senior Member

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    You are absolutely right, but I'm not sure there's much power is lost as a result. The electric motors working together create the variable ratio transmission effect which the engine needs to drive the power-train efficiently.
     
  5. Bill Norton

    Bill Norton Senior Member

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    edit: Greg, MG2 is directly connected to the axles. It's MG1 that creates the ratio between the engine and the wheels. It always requires power to do this, even when the engine is off in EV mode.

    I know this is the Pros and Cons of the PiP thread, but,,,
    I hypermiled to work this morning, at least that's what it felt like.
    I drove the speed limit on back roads, 30, 35 and 45 MPH.
    We had a Wing Ding at work and I could not plug in today so I decided to drive the back country way and see if I could make the RT on a single charge. I hate having that stinker wake up...

    4.89 Miles/Kwh. That's good, right? I wasn't a nuisance on the road, I just drove the posted speed limit !!

    20140611_065559.jpg

    My estimated range indicator says I still have 25 miles at shut down, so I hope to make it home again!
    It's about 180 ft elevation change down on the way home. I did drive with the climate system off and the windows down an inch.
     
    #485 Bill Norton, Jun 11, 2014
    Last edited: Jun 12, 2014
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  6. css28

    css28 Senior Member

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    This time of year I have 13+ miles left over on my Volt after my 38 mile round trip.
     
  7. Bill Norton

    Bill Norton Senior Member

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    I swear I'm not a hypermiling A/H. This was on back roads with 30, 35, 45 mph speed limits. I did the speed limit, for a change.
    Below is my total for the day:
    5.23 miles/Kwh @ ~ $0.12/Kwh = $0.023 / mile.

    Plus I had an estimated 7 miles left in the pack.
    (This is battery to wheels so add some for the walls to wheels charging losses).



    Power Display.png



    {I'm not going to drone on about how extremely hard GM worked on building this advanced Li-ion battery pack with the most advanced TMS in the industry, because I don't know how hard they worked on it. I hope they took normal coffee breaks and typical American vacations,,, tease...} [ Let's not even bring up Tesla with their +7000 stainless steel shotgun-shell sized containers, each one spot welded in place, making up their pack. I've read some EV engineers think they are kind of a joke for building a pack this way].


    Main Display.png
     
    #487 Bill Norton, Jun 12, 2014
    Last edited: Jun 15, 2014
  8. GregP507

    GregP507 Senior Member

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    The Prius wins on overall better mileage, but the Volt has taken a big bite out of its market-share because of its useful EV range.

    Time for Toyota to re-think, I think.
     
  9. inferno

    inferno Senior Member

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    This is what the NS4 will be for I believe... Probably at least 50 miles range on that vehicle when it's released, and probably 45 or 50 mpg
     
  10. karmamule

    karmamule Junior Member

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    As I eagerly await my transition from ICE to BEV in a few weeks I've been hopping all over various hybrid/BEV-related forums of all sorts. Other than the forums for my future car this thread has been by far my favorite of any of them. There's been lots of interesting information that's come out as John and the Voltsters have had their back-and-forth.

    Yes, it definitely is a thread that's strayed (and I hope the OP got enough relevant info out of it to make up his/her mind), but I wanted to come out of lurker-mode to say I hope it does keep going. If not, I'll miss it!
     
  11. usbseawolf2000

    usbseawolf2000 HSD PhD

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    PiP sold very well last month. That's for sure.
     
  12. bilbo04096

    bilbo04096 Member

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    California probably leading the way, with the high interest in admittance to the HOV lanes of clogged highways. Here in the east many people come at it from a slightly different tack since we are the furthest point downwind for a lot of air pollution, not to mention that generated locally. It's heartening to see any BEV or PHEV on the road, but there still aren't enough to feel like it's a movement. Prius is the 800 pound gorilla here, with a smattering of other eco-oriented vehicles. Not many Pips and even fewer Volts so I always enjoy seeing the white Volt from just down the road turning the corner to come home. One PiP and one Volt in the neighborhood is a good start.
     
    #492 bilbo04096, Jun 13, 2014
    Last edited by a moderator: Aug 8, 2014
  13. inferno

    inferno Senior Member

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    Please say what you're thinking of switching from and what you're thinking of switching to, that's very informative :) You being from MA I'd be curious to know BEV #s and efficiency considering MA has all extreme seasons lol
     
  14. karmamule

    karmamule Junior Member

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    Hi inferno, my quick vehicle history: went from early Honda Insight to iconic Prius in November 2003. Loved it, but after 5 years got a great deal on a Nissan Altima Hybrid and bought that. (So-so mileage for a hybrid but fun to drive). Went thru mid-life crisis and got a hardtop convertible 3 years ago, Volvo C70. Fun, but after feeling ICE remorse started looking to get back on the other side of the fence.

    After some saving and careful examination of finances decided to go for a Model S, currently on order for delivery in September. I got the 85kwh model so plenty of range, and the good news is where I park for my commute has free Level 2 charging so my home electric bill will barely budge. I was leery of how it would react to ice, snow, etc but after seeing some winter handling videos (and the fact it is so popular in Norway) put my mind at ease.

    Way back in 2003 when I ordered my Prius I had to wait a couple months and remember enjoying John's site and other resources to keep myself busy during the wait. Now I have even longer to wait so I have a list of bookmarks for sites on hybrids,volt/leaf/prius forums, BEVs, etc. that I'm regularly perusing.
     
  15. Bill Norton

    Bill Norton Senior Member

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    karmamule,

    Congrats on your purchase! It will be an incredible ride! Wish I had the dough... Is there a Supercharger in your area? I can see a time when owning a Tesla is a one time purchase with free fuel for life !!

    John,

    You almost scare me. What exactly is being "Undermined"? What would be the "Agenda"?
    Please try brevity. Could you do it in one or two sentences? Not to upset you, but you sometimes talk in a sort of legalize.
    I'm being direct this time so as not to "downplay" my request from you, buddy.
     
  16. karmamule

    karmamule Junior Member

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    Bill, thanks! I am psyched that short-range fuel is mostly taken care of by work day charging, and long-range by the superchargers. Heading to the south and southwest is covered by a charger in RI and 2 in CT, however heading to northern New England is still not covered, so I'd have to make do with Level 2 charging whenever I go up there. Fortunately my once or twice a year from Boston to Hendersonville NC to see my Dad will be completely covered by superchargers the next time I go.
     
  17. inferno

    inferno Senior Member

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    What I mostly was curious about was how much did the range decrease in the cold or hot :p Or how much did it increase?
     
  18. karmamule

    karmamule Junior Member

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    If I remember right I've seen a couple people in the forums say range can get closer to 190 on very cold winter days. Hot weather / AC use doesn't affect it as much. I'll find out for myself later this year. \o/
     
  19. Troy Heagy

    Troy Heagy Member

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    That didn't work. I can still see Bill's original post just fine..... I guess moderators don't censor posts when you click Report and write, "I don't like his viewpoint." I guess they support free speech in their little area of the web. :D
     
  20. GregP507

    GregP507 Senior Member

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    I don't regret buying the PiP, but it really doesn't make a heap of difference in retrospect. Electricity costs about half as much as gasoline where I live, therefore the 19 km of EV range I get normally on a charge, amounts to about one liter of fuel, more or less. That translates to roughly 30 cents of benefit, every time I plug it in. It doesn't always seem worth the extra effort to take out the cord, plug it in and put it back in the car when I'm finished.
     
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