EV miles counted as HV after EV mode is depleted

Discussion in 'Gen 1 Prius Plug-in 2012-2015' started by Frank Perkins, May 22, 2013.

  1. Frank Perkins

    Frank Perkins Member

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    Ok, I know it's a confusing post title. Bear with me the steps to reproduce:
    1. Deplete all EV range and Prius goes into HV mode
    2. After engine warms up, skillful use of the accelerator can keep the system in "EV" mode by not going to the RIGHT of the throttle indicator
    3. I have been able to drive a few miles in HV mode, but only using EV without the ICE firing up.
    What I noticed is that those pseudo EV miles are counted against the HV range and NOT the EV range. I worked hard to get that extra mile of EV. It would be nice if it didnt count against HV!
     
  2. bisco

    bisco cookie crumbler

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    yes! but ultimately, they came from gasoline. except the amount you were down on the hv battery indicator when you plugged in.
     
  3. CharlesH

    CharlesH CA HOV Decal #5 on former PiP

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    In other words, when the car switches to HV mode (albeit still running in EV), that establishes the set point that the car will maintain with the ICE. The system may let the battery go down a bit more, but eventually the ICE will come on and charge it back to that set point. The only way to "win" is to be able to stop and plug in before the ICE turns on.
     
  4. 3PriusMike

    3PriusMike Prius owner since 2000, Tesla M3 2018

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    I don't believe there is any such setpoint...If you suddenly find yourself going down a big hill you'll add a lot of EV miles and HV mode won't try to reduce it.

    Mike
     
  5. CharlesH

    CharlesH CA HOV Decal #5 on former PiP

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    I thought that if you stayed in HV until you reached the bottom of the hill, on the flats it would then try to use up the regenerated charge down to the set point. :confused:
     
  6. markabele

    markabele owner of PiP, then Leaf, then Model 3

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    I think you are both right. In the regular Gen3 it would add a bunch to the battery going down a big hill that it would then use a little more of to get it back down to it's happy medium. But the regular Gen3 would also have to rev it's engine way up if it got more energy than the battery could store. This is what the PiP would not do, I think it would just store it.
     
  7. usbseawolf2000

    usbseawolf2000 HSD PhD

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    If the car is sustaining the battery charge, it will be counted as HV mile. It does not matter if ICE is off or not since that charge is simply "borrowed".
     
  8. F8L

    F8L Protecting Habitat & AG Lands

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    Agreed but I think some other cars count them as EV miles. That is why the Prius c and the CMAX have such large EV mile counts compared to the PIP.
     
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