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EV mode at every stop

Discussion in 'Gen 3 Prius Fuel Economy' started by dnstommy, Jul 7, 2012.

  1. ES44AC

    ES44AC C.A.U.S

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    Sorry I can't agree with that, in one of his many videos he is clearly telling the driver to "put it in neutral" and in one case he actually moves the little shift lever for him. Then a discussion ensues that " Oh there is still drag when the car is in drive and gliding" (paraphrasing here)

    Examples:

    At time interval 5:04 "put the car in neutral"
    " " 5:40 " put it in neutral"
    " " 5:54 " Wayne moves the lever"

    There are many more examples of this throughout the clip.

    The vid is on YouTube and is called Wayne Gerdes and Toyota Present Prius Ride along - Winner of.mp4. It also was posted in this forum.

    Have a look at it if you can find it and then let me know....

    Regards
     
  2. F8L

    F8L Protecting Habitat & AG Lands

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    He is explaining that there is drag when lifting off the throttle. Regardless, if you dont like the advice then dont follow it. That what's great about all these tips. You can pick and choose what works for you and leave the rest.
     
  3. Corwyn

    Corwyn Energy Curmudgeon

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    I KNOW that. It is a way of teaching hypermiling without spending the whole time teaching how to get into a glide. Once they get the idea they will be using the gas pedal to do the same thing.

    3:30 "You're going to do this with your foot in about two weeks"

    From:
     
  4. ES44AC

    ES44AC C.A.U.S

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    Really?

    Then putting a NEUTRAL position on the shifter is just something Toyota thought we'd all like to see even though it's useless. Try putting your car in that mode and hit the accelerator I'm betting you don't move an inch. Likewise with no neutral there would be no way to put the transmission ECVT or regardless of it's type in PARK. Yes I understand that the traction motor and the engine and trans don't end up in the back seat and the trunk so you can have a neutral condition.

    Or try using your mentor Wayne's method on a nice steep hill and never touch the brake, according to your logic you'd have total control of the vehicle because " There is no way to disconnect the engine and transmission from the wheels" There would be no noticeable gain in speed due to less rolling resistance right? If that's the case why does he use it as a demonstration 'tool'?

    Of course it rolls faster it's in freaking neutral what do you expect?

    Yes I get that he is trying to get the driver to learn to use his foot.........eventually down the road. Hell we can't do it now it's too scary, even though you have great foot control. Lmao Talk about the longest way to get between two points.
    Hell show him NOW you're right there with him directing his every move for God's sake.

    We are probably arguing semantics and at this point I will politely end the banter.
     
  5. F8L

    F8L Protecting Habitat & AG Lands

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    Actually, the rolling resistance difference between neutral and glide or warp stealth is barely percepable if there is any difference at all.

    In the video Wayne is trying to instruct on many different techniques at once. It is much faster, safer and easier for the driver to just focus on the road and Wayne's other instructions than it is to teach him how to properly glide during this short drive.

    This is the third thread that this argument has taken place in. If you don't want to use neutral then don't. It is quite simple.
     
  6. Corwyn

    Corwyn Energy Curmudgeon

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    Yes really. Go here to see how your car works: Toyota Prius - Power Split Device

    Your snarky banter will sound better once you understand how it really works.
     
  7. fuzzy1

    fuzzy1 Senior Member

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    How many mpg is that?

    I seem to remember Wayne's students getting 86 mpg on the first test run, more the next day.
     
  8. ProximalSuns

    ProximalSuns Senior Member

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    A LOT! It pegs the meter at 100 mpg.
    Wow! Can you imagine the driving contortions they must have to go through. Probably the most stressed out drivers on the road. They really should buy Leafs or Volts or even PIP's.

    Hitting the EV button at stop lights is much easier and much less stress inducing. You can get decent acceleration away from the light and get that first crucial 0-25 mph momentum going with pure electric.
     
  9. fuzzy1

    fuzzy1 Senior Member

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    If this were a mid 20th Century vehicle, especially a heavy truck, with drum brakes that quickly faded to uselessness on long steep hills, and a manual transmission that could prevent its gears from being re-engaged at speed, this law would still have a point.

    But in a light 21st Century car, with far better brakes, and 'transmission gears' that never disengage even in Neutral, the law's usefulness is vanishingly small on short shallow hills. And many states never did apply this law to flat roads.
     
  10. fuzzy1

    fuzzy1 Senior Member

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    For an entire 20+ mile test loop, or just momentarily until you reach 25 mph?
     
  11. fuzzy1

    fuzzy1 Senior Member

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  12. markabele

    markabele owner of PiP, then Leaf, then Model 3

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    What's the third one? I've obviously been in the one with Brett. But I like to hear people's viewpoints on this concept.
     
  13. ProximalSuns

    ProximalSuns Senior Member

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    Yes!
     
  14. fuzzy1

    fuzzy1 Senior Member

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    Which?

    Pictures?
     
  15. fuzzy1

    fuzzy1 Senior Member

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    Are you confusing the Plug-In Prius?

    With the regular Prius lacking a charging port to fill the battery from a wall plug, instead of from the ICE, it is not the same principle.
     
  16. ProximalSuns

    ProximalSuns Senior Member

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    1 mile full EV capability vs. 11 mile full EV capability.
     
  17. fuzzy1

    fuzzy1 Senior Member

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    ^^ Nice dodge. Again.
     
  18. ProximalSuns

    ProximalSuns Senior Member

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    No..no..no...that's Tom. I drive a Prius.
     
  19. GasperG

    GasperG Senior Member

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    I have a question that may have explanation for this efficient EV only start in heavy traffic. Doing a pulse and glide how long should the pulse at least last? I think it's inefficient to start with EV and at last part of pulse you fire up the engine for 2 seconds. If you can accelerate without ICE or when ICE is then accelerating further for at least couple of seconds it may be more efficient.
    In heavy traffic I try not to use ICE if I know it will not run for long, so if I'm first at the traffic light I will accelerate with ICE from the start and the ICE will run for at least 5 sec, if the traffic is slow I use EV mode as much as possible, as 10 kW from ICE are too much. Doing EV start from every traffic light will deplete my battery very quickly.

    How do you do pulse and glide when there is heavy traffic with constant speed of 35 mph. Is it better to pulse in upper ECO part of HSD for a very short time and and then do perfect glide with no battery or is it better to pulse just above center line of HSD for a longer time and do a glide with a little help from battery to extend the time of glide?
     
  20. Corwyn

    Corwyn Energy Curmudgeon

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    Why imagine when you can watch the actual video?