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Is there a way to calculate type of mileage?

Discussion in 'Gen 3 Prius Fuel Economy' started by Oskar, Jun 28, 2015.

  1. Oskar

    Oskar Member

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    What I'm actually asking is if there is a way in which one can find out how many miles a Prius travels in EV mode, and how many miles it travels in gas mode. In other words, if you've driven 10,000 miles in your Prius, how many (or percentage) of those miles were traveled using the electric motor. I think one of the reasons that a Prius can have a longer life is that its gas engine doesn't get as much use/abuse as a non-hybrid. Not sure these stats would be available, but thought I'd ask just in case anyone else has mulled this question.
     
    #1 Oskar, Jun 28, 2015
  2. bisco

    bisco cookie crumbler

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    i wonder if tech stream can find it? surely, it's in toyota's little black box, but only they have access to that. either way, i'm not sure if the engine lasts longer than other cars.
     
    #2 bisco, Jun 28, 2015
  3. HaroldW

    HaroldW Active Member

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    I would guesstimate. 80% ice. 20% ev. H
     
    #3 HaroldW, Jun 28, 2015
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  4. bisco

    bisco cookie crumbler

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    i can run with that. speaking of which, there's a new thread here from down under, says his 2015 shows him hv/ev %.
     
    #4 bisco, Jun 28, 2015
  5. HaroldW

    HaroldW Active Member

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    That is a good feature. H
     
    #5 HaroldW, Jun 28, 2015
  6. Oskar

    Oskar Member

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    Wish I had that ability on my 2014. One reason I'm curious about this is that I'm just on the edge of doing a 600 mile tank. I've got about 555 miles with one bar to do. Should be an easy ride. Would be fun to know the percentage of ICE vs EV.

    80% ICE? I wouldn't have thought it would be that high. Then again if one averages 60 mpg, that's 48 mpg on ICE, pretty darn good for any car. But that means that the EV contributes only an extra 12 mpg? Seems a bit low.
     
    #6 Oskar, Jun 29, 2015
  7. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Yes but it isn't easy:
    • miniVCI/Techstream - there is an initialization file that determines how much memory or how long it saves data in RAM. Then the data has to be analyzed for get the metrics you want.
    • 'Frank Tiger' - uses something, Android based (?), to record data which can be analyzed later.
    • custom instrumentation - non-OBD based
    An easier approach would be to make a math model and run simulations. The reason is we can take the driver out of the model and if done right, factor in:
    • temperature
    • terrain
    • speed
    • trip duration
    Upon 'beep', our car has 2.1 gallons. I reset the "B" trip meter and then calculate the remaining gas by:
    • miles / MPG = fuel_burned
    • 2.1 - fuel_burned = remaining fuel
    So this morning, I filled up with 11 gallons meaning the car still had ~1.2 gallons remaining. The "B" trip meter method indicated I was down to my last gallon . . . close enough.

    Bob Wilson
     
    #7 bwilson4web, Jun 29, 2015
  8. CR94

    CR94 Senior Member

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    On a regular Prius (i.e., excluding the plug-in version), I don't believe any purported percentage of EV travel would be a meaningful number, since all the energy to drive the wheels (and accessories) ultimately comes from the engine. When the car is coasting with engine off, spending stored kinetic and/or potential energy to overcome drag, would you count that distance as engine or EV powered, if you could?
     
    #8 CR94, Jun 29, 2015
  9. bisco

    bisco cookie crumbler

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    maybe someone at toyota can answer how they programmed it down under.
     
    #9 bisco, Jun 29, 2015
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