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regenerative braking in neutral?

Discussion in 'Prime Main Forum (2017-2022)' started by MNdriver, Aug 17, 2017.

  1. MNdriver

    MNdriver Senior Member

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    I have a quick, naive question.

    As an experiment, this morning I shifted into neutral for long glides and while going down hills. I noticed that when braking in neutral, the monitor didn't register any regenerative energy going to the battery. Is this because regenerative braking doesn't happen in neutral, or just because the monitor (the EV one with the blue rainbow) won't display it when you're in neutral?
     
  2. Lee Jay

    Lee Jay Senior Member

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    In neutral, you get only friction braking, no regeneration.
     
  3. MNdriver

    MNdriver Senior Member

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    Thanks, Lee Jay.
     
  4. bisco

    bisco cookie crumbler

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    you can feel the change when you switch, the car takes off like a rocket!
     
  5. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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    Neither Motor/Generator is electrically active in N. This is why there is no regeneration in N and why so many who try to go through a car wash in N fail.

    If at all possible, never use N. Toyota is required to offer an N, there are very few times you should use it.

    (if you wish to 'clean' the friction brakes, stopping in N will do that)
     
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  6. priuscatprimeguy

    priuscatprimeguy Senior Member

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    fail what? fail to get their car clean?:confused:
     
  7. Prodigyplace

    Prodigyplace Senior Member

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    They find their traction battery suffers serious depletion. :(
     
  8. priuscatprimeguy

    priuscatprimeguy Senior Member

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    huh.....that's news to me. My EV range before and after never budges.
     
  9. Lee Jay

    Lee Jay Senior Member

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    There's no other choice. You can't put in in Park because it won't go. You can't put it in Drive because it will drive off after it gets to the end.
     
  10. Prodigyplace

    Prodigyplace Senior Member

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    We are referring to the car washes where you are supposed to put your car in Neutral and the car wash pulls the vehicle through the different stations.

    The ones here tend to be where you stop your car within a certain area and the wash station travels around/above the vehicle.
     
  11. Sam Spade

    Sam Spade Senior Member

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    And that is because Neutral disconnects ALL of the drive mechanism from the wheels; that includes the MG that does the regen.
    It is designed that way on purpose.
     
  12. Sam Spade

    Sam Spade Senior Member

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    There is another long thread on here about that.
    ONE owner found that his HV battery level went down while doing that.
    He then found out that it would NOT do that if he turned off the electrical accessories......mainly the A/C.
     
  13. bisco

    bisco cookie crumbler

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    it's not an issue with plug ins.
     
  14. priuscatprimeguy

    priuscatprimeguy Senior Member

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    ahhhh, plug in's, gotcha(y) golly, it's been 5 years since I drove a Hybrid (non plug in of course)
     
    #14 priuscatprimeguy, Aug 17, 2017
    Last edited: Aug 17, 2017
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  15. priuscatprimeguy

    priuscatprimeguy Senior Member

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    yup, I go to the car wash that pulls the vehicle through different stations.:cool:
     
  16. Lee Jay

    Lee Jay Senior Member

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    No it doesn't. You can't disconnect the drive mechanism from the wheels in a Prius. Neutral in a Prius just disables the power electronics that drive the motor-generators.
     
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  17. Sam Spade

    Sam Spade Senior Member

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    OK a slight mis-wording maybe.
    An electrical disconnect is still a disconnect.
     
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  18. priuscatprimeguy

    priuscatprimeguy Senior Member

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    ok, who's the wise guy that pulled the plug on my Prime?:mad::p
     
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  19. drysider

    drysider Active Member

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    Shifting to neutral does a lot of things that, if you use neutral, you should be aware of. There are many older threads on the pros and cons. If you feel the need to use neutral, you should look them up. It is a lot more than unhooking the engine from the wheels.
     
  20. Mendel Leisk

    Mendel Leisk Senior Member

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    I basically like Neutral for parallel parking on a hill: to roll a tire into contact with the kurb, with just gravity, sans engine motivation.