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Discussion in 'Prime Main Forum (2017-2022)' started by dave3057, Jul 31, 2017.

  1. dave3057

    dave3057 Member

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    Just kinda got this idea from a previous thread. I'm going to the Toyota training center in few weeks, and figured I should use this opportunity to try and get some answers or insight into some questions we still have.
     
  2. Lee Jay

    Lee Jay Senior Member

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    Why did the chief engineer say the car puts out 76kW in Ev mode when it actually peaks out at around 63kW and averages less than 60kW during a run from 0-60?

    upload_2017-7-31_7-40-54.png
     
  3. bisco

    bisco cookie crumbler

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    cool, thanks! are you an employee, or is this some kind of customer thing?
     
  4. john1701a

    john1701a Prius Guru

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    Not all the electricity is used for propulsion.
     
  5. dave3057

    dave3057 Member

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    I'm a technician at a Dealership.


    iPhone ?
     
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  6. Lee Jay

    Lee Jay Senior Member

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    There's no other place for that much power (76kW - 63kW) to go in the car. And I did this run with the HVAC turned off and no headlights or DRLs.
     
  7. john1701a

    john1701a Prius Guru

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    Generous heat in temperatures well below freezing (a normal winter day in Minnesota) would present quite a demand.
     
  8. Lee Jay

    Lee Jay Senior Member

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    Not with the HVAC turned off on a 60 degree F morning.
     
  9. john1701a

    john1701a Prius Guru

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    It would be programmed for max load. So, you wouldn't get that extra potential even when load is low. That consistency is important.
     
  10. Lee Jay

    Lee Jay Senior Member

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    Regardless, my whole-house 4-ton A/C system and fan together draw 4kW. There's no way the little heat pump in the Prime can come close to drawing the 13kW difference between the claim and the observation.
     
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  11. joachimz

    joachimz Senior Member

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    1. Set the default for traction battery cooler to yes
    2. is there a way to download the ECO diary data (e.g. miles/kWh etc) for offline analysis?
     
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  12. john1701a

    john1701a Prius Guru

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    Agreed for normal operation, but what about peak? Initial draw with household A/C spikes.
     
  13. Lee Jay

    Lee Jay Senior Member

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    That's because it's a single-phase induction motor directly coupled to the power grid. The heat pump in the prime is a 3-phase PM motor connected to power electronics to facilitate variable-speed operation. Zero in-rush.
     
  14. john1701a

    john1701a Prius Guru

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    Sweet!

    Of course, the load of the load changes quite a bit in a car. Cargo & Passengers vary to a greater degree. So, some type of buffer is still reasonable.
     
  15. heiwa

    heiwa Active Member

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    A different question. When AC is off and heat pump is not active (temp set lower than the ambient temperature) and fan is on, why does the car estimates EV range as though I have AC on? Energy display shows no arrow going to fan icon. As soon as I turn off the fan, EV range gose back up.

    Posted via the PriusChat mobile app.
     
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  16. dave3057

    dave3057 Member

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    I'm going in to the training center on he 15th so if there's any other questions, post it.


    iPhone ?
     
  17. ttait

    ttait Active Member

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    My big one: Why was LKA removed when the Gen 3 ATP packages had it. LKA was only active with DRCC, otherwise, it was LDW w/SA, exactly what we have now. So instead of 2 technologies in the package, we now only have one. This is my greatest disappointment with this car.

    My little one: Why do certain settings go back to their default after we change them the next time the car is started. Example is the A/C. In the heat of So. Cal. I always turn the 'eco flow' off. There is no way to save this setting and it is the one I prefer. Why can't it just come back on the way I set it?
     
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  18. heiwa

    heiwa Active Member

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    Can one turn off heat pump, and just use fan to circulate air? For example, PP will heat the cabin when ambient temp is lower than the temp set as one turn on the fan. It appears that the only way to avoid this is to reset the temp setting lower than the ambient temp.

    Posted via the PriusChat mobile app.
     
  19. Lee Jay

    Lee Jay Senior Member

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    Yes.
     
  20. dave3057

    dave3057 Member

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    I asked the instructor for the class I'm taking about the traction cooler. He thought there was a way, but he said he has to look into it.


    iPhone ?