Calculating EV Range

Discussion in 'Gen 1 Prius Plug-in 2012-2015' started by PiPLosAngeles, Nov 27, 2012.

  1. PiPLosAngeles

    PiPLosAngeles Senior Member

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    I can't seem to get www.jurassictest.ch/GR/ to jive with my real-world experience. I set it to use a Nissan Leaf with 2.7 kWh battery capacity, but it's not working out. For example, today I was able to drive almost twenty miles on pure EV mode. When I calculated the route on Green Race it said I should have been at -20% capacity where I actually ran out of battery. I had to increase capacity to 3.3 kWh to get the end point to match, but then when I tried other routes I know the results didn't jive there either. Any tips?
     
  2. bisco

    bisco cookie crumbler

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    what was your average speed?
     
  3. PiPLosAngeles

    PiPLosAngeles Senior Member

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    55 - 60. It's slightly downhill most of the way.
     
  4. priuskitty

    priuskitty PIP FAN

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    yeah, you're lucky to only get 6 miles EV
     
  5. bisco

    bisco cookie crumbler

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    you went almost 20 miles pure ev at 55-60 mph slightly downhill? that's gotta be a record!
     
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  6. mrbigh

    mrbigh Prius Absolutum Dominium

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    Agree!!!;)
     
  7. PiPLosAngeles

    PiPLosAngeles Senior Member

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    The whole trip is 21.3 miles and the display reported 448 mpg because I had to burn some gas to go up a little hill at around the 20-mile mark. From there the rest was downhill coasting and a couple of ICE-assisted starts from traffic lights.

    I believe that works out to around 6 oz. (177 mL) of gas :) Of course, I have to pay for that going back since my work doesn't have any charging stations nearby.
     
  8. priuskitty

    priuskitty PIP FAN

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    ahhhh.....so not pure EV wink wink
     
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  9. bisco

    bisco cookie crumbler

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    once you use ice, it's impossible to know pure ev range. jurassic park is probably right, try it sometime.
     
  10. priuskitty

    priuskitty PIP FAN

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    once ICE kicks in jurassic park is useless b/c it doesn't know PIP's MPG
     
  11. PiPLosAngeles

    PiPLosAngeles Senior Member

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    No need to be sarcastic. I did try it. The point where I ran out of battery and the ICE kicked on is the same spot jurassic test reported I would be at -25% battery.
     
  12. PiPLosAngeles

    PiPLosAngeles Senior Member

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    That's why I was only referring to the error in predicting where I would run out of EV. Jurassic test was wrong by several miles.

    Pure EV the first 20 miles.
     
  13. priuskitty

    priuskitty PIP FAN

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    did you start the test going uphill or downhill?
     
  14. priuskitty

    priuskitty PIP FAN

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    and did you take into account outside temperature?
     
  15. bisco

    bisco cookie crumbler

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    sorry, wasn't being sarcastic, just confused. think i got it now.
     
  16. bisco

    bisco cookie crumbler

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    what does jurassic show for elevation drop over the 20 miles?
     
  17. PiPLosAngeles

    PiPLosAngeles Senior Member

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    Same direction I actually travelled, with the first pin at my starting place and the last pin at the point I ran out of EV power. Temperature was about 50°F.
     
  18. priuskitty

    priuskitty PIP FAN

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    don't know what jurassic uses for ambient temps, so I couldn't say what ambient temps have on the calc's
     
  19. priuskitty

    priuskitty PIP FAN

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    did you put the Plug In's curb weight?
     
  20. PiPLosAngeles

    PiPLosAngeles Senior Member

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    Yep. 1438 kg. That changes it from -25% to -21% at the point I ran out of "gas." Playing with the average speed changes things greatly. If I change the average speed to 71 kph (44 mph) it gets me to the right point. I don't know if that's right because the entire time was spent between 55 - 62 mph except for two traffic lights at the beginning. I know the average for the whole trip, but the last 1.5 miles is all streets with lots of traffic lights.
     
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