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Jalopnik: Prius Prime

Discussion in 'Prime Main Forum (2017-2022)' started by bwilson4web, Jan 10, 2017.

  1. EV-ish

    EV-ish Active Member

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    It is common for campgrounds to support L2 charging. KOA Carlsbad e.g. has 50A listed on their site, I presume 240v.

    You do not want a BEV so you build windmills to tilt at. People who want a Tesla find it liberating -- even though they may have to network and google a little to use the car fully.
     
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  2. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Actually three, BMW-i3-REx trips:
    • 463 miles - Charlotte NC-to-Huntsville 6 fill-ups, cruise at 65 mph and 55 mph
    • 700 miles - Huntsville-to-Stillwater, 10 fill-ups, cruise speed 65-68 mph
    • 700 miles - Stillwater-to-Huntsville, 10 fill-ups, cruise speed 65-68 mph
    The block-to-block speed was at or under ~50 mph because of the frequent refueling stops. Double the gas range and the block-to-block speed goes up to ~60 mph because each stop, no matter how brief, lengthens the trip block-to-block time.

    We were planning a 1,600 mile trip when the motor mount bolt broke in rush hour traffic. I'm glad it happened in town with just me. Six hour later and we would have been a hundred or more miles out of town. But the motor mount break and subsequent repair convienced me to hold off on the gas range extension ... for now.

    Bob Wilson
     
  3. Lee Jay

    Lee Jay Senior Member

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    That's 90 miles round-trip from the caverns, and it's listed as 120V. A guy commented on Plugshare, "Had to rent RV pull through for 40 amp service. Ok with car/tent camping."

    So, it's not exactly BEV-friendly.

    I do want a BEV. I'm all-electric on my model airplanes, I do wind energy research, my degree is in EE specializing in power electronics and machines, and I hate using petroleum. The problem is, Ev vehicles need to actually do the same job as conventional cars, but do it better. They don't. Ranges are short, costs are high, charging rates are slow, and chargers are few and far between by comparison. To replace conventional vehicles they need to do *everything* better. That's how technologies in use shift.

    The root cause of this problem is that batteries suck.
     
    #43 Lee Jay, Jan 10, 2017
    Last edited: Jan 10, 2017
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  4. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Calm my friend. I admire the BEV pioneers who are blazing new trails. To the extent my BMW i3-REx has an EV drive as well as the new Prius Prime Plus, I'm facing the similar issues that BEV owners face. That is why I use a plug-in architecture with a good and better engine power option.

    I'm just suggesting we have our individual requirements and living in a 'fly-over' state, long distances in rural areas are important to us. One disturbing trend are the charges at some commercial chargers are 3-5x higher per mile than gasoline in my BMW i3-REx in engine mode:
    • ~$0.25 for 10 miles electric
    • ~$0.60 for 10 miles gas
    One of my analysis revealed that without road taxes, the cost per mile of our 52 MPG, Gen-3 Prius was at parity with electric cost per mile of the BMW i3-REx (i.e., $1.80/gal and $0.10/kWh.) In effect, I'm calculating the cost per mile based upon current prices and vehicles.

    Bob Wilson
     
  5. Zythryn

    Zythryn Senior Member

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    The thing is, many Tesla owners are not BEV pioneers.
    If Lee were in Minneapolis, I would invite him to one of our Tesla club gatherings.
    There are many people that just drive a Tesla because it is a nice car.
    They love the performance, the convenience, the quiet, etc.

    No doubt, he has driving requirements not suited to an electric car. But his insistence that everyone else will face the same issue gets tiresome.

    Certainly some will, but many won't.
     
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  6. Lee Jay

    Lee Jay Senior Member

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    If *any* will, they can't replace all conventional cars. And they need to replace all conventional cars.

    The disparity is, you think 90+% of people would be fine with one.

    I say 90+% of people wouldn't be fine with one.

    We agree that some fraction of society is fine without a conventional car.

    Of the 10 people I know who drive cars that can plug in, all 10 either drive a plug-in hybrid or have a conventional car to supplement their Ev. The one person I know who went all electric (Leaf + Model S) quickly bought a conventional car to supplement.
     
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  7. Zythryn

    Zythryn Senior Member

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    This is incorrect, no where have I said I think 90% of people would be fine with one.
    I am glad you agree that some fraction of people would be fine without a conventional car.

    I don't see why you feel BEVs need to replace all conventional cars. Do you feel the same about hybrids? And because they won't do you feel they are a failure?

    Please don't confuse lack of market penetration with a product not being able to meet the needs of the market.
    Hybrids have less than a 3% market share, yet they are capable of serving the needs of 90% or so of the market, maybe more.

    The plugin market is growing, and within a few years will likely surpass the market share of hybrids.
     
  8. Lee Jay

    Lee Jay Senior Member

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    You use the word "most".

    Because fossil fuels are a finite resource.

    A plug in hybrid is what a Tesla should have been.
     
  9. Trollbait

    Trollbait It's a D&D thing

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    Does Webster's have numerical value attached to their "most" listing?
    We can make ICE fuel renewably by several means if chose too. I think BEVs and PHEVs are needed to make 100% replacement of fossil fuels feasible.
    A plug in hybrid is more complicated to build than either an ICE or BEV. It would have been an additional burden to success for a start up like Tesla. It didn't help Fisker out.
     
  10. Lee Jay

    Lee Jay Senior Member

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    A series hybrid. Think a Tesla with 1/4 of the batteries and a Honda portable generator on board.
     
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  11. EV-ish

    EV-ish Active Member

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    That was the original Volt concept. It was so successful you can buy one down at the corner for a competitive price.

    Tesla is so right, they may even survive the age of trump.
     
  12. Lee Jay

    Lee Jay Senior Member

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    I though the Volt was a hybrid with a large engine like the Prius. 1.5L, I think.

    You don't think the fact that they are rotten cars has something to do with it?

    Tesla is selling extremely expensive vehicles to rich people. Toyota is trying to sell reasonably priced vehicles to average people (or wealthy people who won't spend a ridiculous amount of money on a car).

    How much less would a Model 3 cost with one-fourth the batteries? Competitive with conventional cars? And with a generator, it could have the range and re-fueling speed of conventional cars, and Tesla could have saved themselves the hassle and expense of the Supercharger network.
     
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  13. bwilson4web

    bwilson4web BMW i3 and Model 3

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    There are considerable differences in plug-in efficiency and there in lies a tale:
    • poor engine efficiency - not everyone uses an Atkinson cycle, cooled exhaust, optimized exhaust and intake manifold, offset piston and crank. An ordinary Otto engine has an extremely narrow, efficient range and that should be the speed and power that engine should ever run. But my BMW i3-REx has different power bands.
    • poor transmission to wheel - the Volt problem, instead of just powering a generator, they try to mechanically power the wheels and there in lies the problem. The IONIQ appears to be potentially successful but Godot is bringing them to the USA. But the Prius Prime Plus I pick up in 10 days is the grand master with 20 years of experience and tuning.
    • poor control laws - given the narrow, peak efficiency power, the BMW i3-REx should cycle ON at the peak efficiency power level and then OFF. When ON, any excess power should be banked in the traction battery. This is a trick Toyota has mastered yet seems elusive to their competition.
    • poor warm-up - some appear to put a load on their cold engines when the engines are least efficient.
    • poor rolling drag - the more things moving at higher speeds, the more energy wasted rolling down the road.
    • poor aerodynamic drag - the more air drags on the car, the more energy wasted at speeds above 15-20 mph on the road.
    My thinking is the Toyota plug-in architecture can transplant to all of their hybrids. Size the battery from small to large and the Toyota fleet MPG achieves another step increase. The IONIQ could do something similar if they ever get someone other than Godot to deliver them. As for the others, they are about a generation behind BUT may have lost their motivation.

    Bob Wilson
     
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  14. EV-ish

    EV-ish Active Member

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    At manufacturer costs of $400/kWh, the BEV looked like an exercise doomed to $100k or commuter cars. At $100/kWh, retail costs of the BEV Vs plug-in are within spitting distance of each other and consumers choose based on other priorities. There is a lot to be said for not barreling down the road sitting behind an internal combustion engine. The ~ 400k reservations for the Model 3 is a clue to where a lot of consumer priorities lie and how they view long distance driving based on e.g. an expanding and improving SuperCharger network. There is little reason to doubt that battery prices will continue to decline and the otherwise simple (er) manufacturing and assembly of a BEV may well turn into a strong (overwhelming ?) competitive advantage. So Lee Jay's confident statements of what Tesla should have been are at best myopic and increasingly looking silly.

    Speaking for myself, I placed a deposit for a Prime because I trust Toyota almost implicitly to stand behind their cars and I have extreme confidence in the Prius architecture to be reliable. In a sense this is a criticism of plug-ins since I do not consider buying any model other than Toyota. The Tesla may well have teething problems and I do not live anywhere close to a service center but in just about every other way a BEV is a future I can be happy to support and I just about idolize Tesla and Elon Musk.

    As someone who also lives in fly-over country (and considerably more rural than either BWilson or Lee Jay,) I place my stake as someone considering a Tesla purchase in the next couple of years as a testament to either 1. being a fool; or 2. evidence of a bright future for BEVs and Tesla in particular.

    Lastly, I am coming around to a notion I have resisted for a long time: once EV is experienced the ICE, despite its practicality, is just not very attractive on an emotional level. The mountain of stories from PHEV owners who bend over backwards to avoid ICE use for that last couple minutes of a trip are BEV wannabes.

    Plug-ins are their own worse enemy. Amazing irony, that.
     
    #54 EV-ish, Jan 11, 2017
    Last edited: Jan 11, 2017
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  15. EV-ish

    EV-ish Active Member

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    Around $5000 at the margin, although you would probably want to offset those savings with an ICE and assorted supporting components.
     
    #55 EV-ish, Jan 11, 2017
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  16. EV-ish

    EV-ish Active Member

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    I enjoyed this post very much -- thanks.

    There is no reason to dispute that Toyota Engineering sublimely balances the plug-in architecture for truly remarkable efficiency in fossil fuel energy use. And truly, if a plug-in owner is running a car at 100 - 150 MPG overall with emissions lower than the grid, that is a very reasonable place to be for the next decade. The problem Toyota faces down the road though is that combustion is ultimately pretty darned inefficient even at Prius Prime levels while electricity is cheap and will only get cheaper. And clean, when the world gets around to it. PV in my yard will result in 0.5 cents a mile fuel costs for my *EV driving, meaning too low to bother counting. And while that is certainly the low side of what is available today, it IS available today, to a regular Joe like me. And it will get cheaper and more widely available in the future. In a world where electricity is so cheap, a penultimate ICE is still a pig.
     
    #56 EV-ish, Jan 11, 2017
    Last edited: Jan 11, 2017
  17. bisco

    bisco cookie crumbler

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    what we don't know is, how many of the tesla model 3 reservation holders consider it to be a good long distance car. likely some, but for all we know, none.
     
  18. bhtooefr

    bhtooefr Senior Member

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    Also, especially with a lower proportion of ICE miles driven, biofuels become increasingly viable. There's not just ethanol, there's things like biobutanol (which is more compatible with gasoline ICE fuel systems, combustion characteristics, and IIRC has a better carbon footprint (corn ethanol barely breaking even on carbon footprint)) and (although packaging is an issue for a CNG system) biomethane.

    EVs don't have to displace all ICE travel, they just have to displace most (assuming a car is used at all).
     
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  19. EV-ish

    EV-ish Active Member

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    My ICE is preferably a plane, at least until trains or hyperloops are available.
     
    #59 EV-ish, Jan 11, 2017
    Last edited: Jan 11, 2017
  20. bwilson4web

    bwilson4web BMW i3 and Model 3

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    I've found my travel is ~80% city and ~20% cross country.

    Bob WIlson