The Secret to incredible range ( right here )

Discussion in 'Prime Main Forum (2017-Current)' started by Andyprius1, May 21, 2018.

  1. Andyprius1

    Andyprius1 Senior Member

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    I hinted at this a few months ago, but didn’t follow thru until now. My figures for today are:

    HOME DESTINATION GO MPGe RETURN MPGe ECO SCORE RETURN HOME CHARGE CHARGE CHARGE LEFT
    START
    26.7 miles 18 miles 152 132 90 18

    All done in eco mode, only. Does no need charging while driving. Do not select EV, a large portion of EV
    is also used in ECO. If EV is also used with ECO your MPGe will be much less.
    Terrain, Very hilly +/- 1000 feet four times. About 80 % interstate Highway, I 80 and then Route 49
    Speeds 55-60 MPH. Yes, you can go faster and get incredible range.

    Your trip will be different, maybe even better.
    Upon Tanking Up you now may calculate your MPG from TOTAL RANGE but..............guess what.........
    it’s still......................mpge! ONLY APPLICABLE TO PRIUS PRIME!!!!

    I spent a lot of time on this chart, but somehow got computerscrew. just fill in the blanks. This will keep you thinking for a while.
     
    #1 Andyprius1, May 21, 2018
    Last edited by a moderator: Jun 18, 2018
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  2. Tideland Prius

    Tideland Prius Moderator of the North
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    Use the table format in php.

    Initial Charge at Home Charge Remaining at Destination MPGe to Dest. MPGe Return Home ECO Score Charge Remaining At Home
    1 26.7 miles 18 miles 152 132 90 18
     
    #2 Tideland Prius, May 21, 2018
    Last edited: May 22, 2018
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  3. Dudley1030

    Dudley1030 Active Member

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    I am having a hard time deciphering this. So it looks like you used ECO mode. Did not use EV mode. So, did you use Auto mode or just drive as a hybrid?
     
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  4. Andyprius1

    Andyprius1 Senior Member

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    Sorry about the mess, I will decode.To answer your questions first. Yes that little green sign, announcing the mode must only be on, just to the right of your current speed. If ev comes on, eliminate it. No, no auto mode, I’m not sure what that means.Now to decipher, this was all a nice chart, but the computer didn’t like it.
    Tideland did it for me, a nice job. Thank You. May your tides only be reproductive.
     
  5. Andyprius1

    Andyprius1 Senior Member

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    see post # 3

    Destination charge is what I still had on the car while arriving.

    So, you mean after driving 36 miles you still had 18 miles of charge left when you arrived home?
    Andyprius: Yes, I was totally flabbergasted!
    Moderator: How would you compare the Prime to the Volt?
    Andyprius: There is no doubt about it, the Prime gets you what you expected AND then more.
    Moderator: And compared to the Tesla?
    Andyprius: I only know one factual thing about Tesla, and that’s, I had a deposit on the Model 3 and then never even heard anything about them, so I got a refund.
    Moderator: If you had it all to do again, what car would you buy:
    Andyprius: Another Prime, of course. the volt, tesla,leaf or any other will not give me the range, versatility,
    gasoline savings and future conservative ICE operation of the Prime.
    End of interview. Thank You Mr Andyprius

    Return Home 18 miles is the charge left after climbing 1000 feet four times ( foothills of the Sierra Nevada )
    started with 18 and ended with 18, it’s like Christmas all over again.
    Warning, should you experience this, do not relate it to a BEV, Volt, Civic, Tesla or any other EV or Hybrid owner, you may be committed and suffer the same fate as the original Mr. Tesla.

    This info is so important. I’ll bet 95% of Prime chatters are not aware of this
     
    #5 Andyprius1, May 21, 2018
    Last edited by a moderator: Jun 18, 2018
  6. bisco

    bisco cookie crumbler

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  7. Andyprius1

    Andyprius1 Senior Member

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    So, Bisco, where did you find my recent posts?
     
  8. Tideland Prius

    Tideland Prius Moderator of the North
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    I tidied up the table.
     
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  9. Andyprius1

    Andyprius1 Senior Member

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    Good job!
     
  10. Oniki

    Oniki Active Member

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    OP:

    Thanks for sharing, but in truth I cannot make heads or tails out of your thread.
    And while a single trip might give amazing results (think wind), much more useful information comes from fuel economy over 1000 or 10,000 miles. In the case of the Prime we need to know:

    Trip length between charges
    kWh consumed from the meter for the trip
    Petrol consumed for the trip.

    E.g:
    Last week I drove 120 miles (60 each way) to the airport and back.
    One full battery charge, about 6.2 kWh from the meter
    138 mpg out, 88 mpg back = (60/138 + 60/88 )gallons of fuel = 1.116 Gallons.
    Presuming I drove 36 miles by battery, the remaining (120-36) = 84 miles are HV mode and consumed 1.116 gallons = 84/1.116 = 75.2 MPG.

    Ignore MPGe. It will just confuse things. And for goodness sakes do not confuse MPGe with MPG.
    Presuming you meant MPG, your post parses out like this:
    36 mile trip (18 miles each way)
    18/152 + 18/132 Gallons used = 0.255 Gallons
    Uncertain amount of kWh used .... perhaps half the battery ?
    ---
    If half the battery is 18 miles of range, then the other 18 miles used 0.255 gallons = 18/0.255 = 70.5 MPG in in HV mode. Good result, and well within expectations for the Prime when driven at the speeds you mention. My results are a little better because I drive at ~ 6000 feet elevation.

    Last comment: I don't drive the way you do. I don't think you are harming fuel economy but it is not helping either. I do wonder why you don't use all the battery charge. Seems like opportunity wasted to cut down petrol use and pollution and save a few pennies along the way.
     
    #10 Oniki, May 22, 2018
    Last edited: May 22, 2018
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  11. Andyprius1

    Andyprius1 Senior Member

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    Thanks for the post, however you are including a lot of information as facts. My car does not give me this detailed usage. How do you know how much gasoline you used? Your basing all your math on gasoline consumed. You start your 4th sentence with “ Presuming” from that beginning all the rest is also fiction.
    Aside from 1 or 2 critical faults, it is a interesting Post. About MPGe, it’s all working together to afford the driver a better range per trip by using minimal gasoline, hence synergy. That figure that shows mpg, that’s
    all a combination of HV battery and the ICE working synergistally to obtain best range. Toyota should have put a e on the end of th MPG. I never said in my post that the ICE was not running, it did, but so minimal that
    I wasn’t concerned about it. As for saving my charge, and harming my own fuel economy, that is patently
    false, I used Max EV and Min ICE. When I arrived home, I still had 18, that was 18 that I didn’t need to charge at home!
    My last point which you seem to have completely missed is to inform other Prime owners on increasing efficiency and extending range....by simply driving in Eco. Do not worry, you will still be driving in mostly in
    EV.
    Your MPGe figures are VERY good. I would be interested in how you drive, settings, do you use charge while driving, mode car is in, CC, AC etc. And of course Speed.
     
    #11 Andyprius1, May 22, 2018
    Last edited: May 22, 2018
  12. bisco

    bisco cookie crumbler

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    under 'new posts'.
     
  13. breakfast

    breakfast Active Member

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    Yes, @Andyprius1, the Prius Prime is an incredibly efficient hybrid car as well as a really efficient electric car. (That's my translation of what you are trying to say, and I'm sticking to it)

    For the driving course you describe (lots of hills), the larger battery and super efficient climate control enables, arguably, the Prius Prime to be the most efficient hybrid on the planet thanks to its overall efficiency, a large battery for regeneration, and the ability to use those regenerated miles with the engine fully off at any normal highway speed.

    "ECO mode" doesn't really make a difference - anyone can hit those numbers in HV mode (or as you say "not in EV mode") whether they are using ECO, normal, or Power mode if they don't floor the acceleration pedal too much.

    For a flat driving course, the larger battery would not come into play as often, and you would be surprised to find that a fourth gen Prius Two Eco hybrid would also give you close to 70 MPG (Oniki's calculations are correct). And on the hilly driving course you describe, the Two Eco would still be really close to the Prime.
     
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  14. Salamander_King

    Salamander_King Senior Member

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    Wait... am I missing something here?
    You said "if EV comes on, eliminate it". That means you are switching from EV mode to HV mode. At that instance, ICE will kick in, yes, of course you will save your EV range, but you will be using gasoline instead.

    You also said "increasing efficiency and extending range....by simply driving in Eco" But ECO/Normal/Power mode are not related to EV/HV/EV Auto mode. You can drive ECO mode either with EV or HV or EV Auto. As I pointed out to you in the other thread, I have always kept my car in Eco mode and rarely use Normal or Power mode, but that has nothing to do with saving EV range for later use by switching off from EV mode to HV mode while you still have battery capacity for EV mode.
     
    #14 Salamander_King, May 22, 2018
    Last edited: May 22, 2018
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  15. Salamander_King

    Salamander_King Senior Member

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    I totally agree with you. However, I think if you FLOOR the acceleration pedal all the time, you will save more of EV range by not depleting any of battery capacity on EV drive during HV mode. Of course, you will be using much more gasoline instead.;)
     
  16. Oniki

    Oniki Active Member

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    The Prime shows trip MPG

    Miles / MPG = Gallons

    ---
    My sekrets ? Barely worth disclosing
    • Most highway driving is 62 - 67 mph although I've been known to exceed 80 mph going down mountains rather than brake -- regen is good, but not that good. These high speeds happen when I am not paying attention and fail to bleed off enough speed before a summit.
    • EV is more efficient than HV in low power situations (and vice versa for HV) so while I don't flip back and forth as I go up and down hills, if I have an overall downhill one direction and uphill back I try to match the propulsion mode to the overall terrain. For the route I mentioned I flipped mode twice each way.
    • I use EV in populated areas if the ICE is cold to avoid NOx pollution with people around, and I warm up the ICE on a flat road or slight down hill. This likely does little for fuel economy but it reduces my tailpipe emissions.
    • Once the ICE is warmed up, I do not let it cool down until the trip is over.
    • I have never used CHARGE MODE and that is likely to remain so.
     
    #16 Oniki, May 22, 2018
    Last edited: May 22, 2018
  17. bisco

    bisco cookie crumbler

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    doesn't reported mpg include battery charge usage?
     
  18. Rmay635703

    Rmay635703 Senior Member

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    It seems like you used 4KWHRS to go 18 miles on the way out and 4.5KWHRS to go 18 miles back

    What am I missing?
    Does the car not track regen? As the MPGe numbers versus your range don’t make much sense
     
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  19. Andyprius1

    Andyprius1 Senior Member

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    Peak is 6.2 Kwhrs of charge at 240V
    Very interesting, TY

    I agree with your last sentence, my last procedure was to use all of the EV and then when depleted, put it in charge for the rest of the hill so I can add to the coming downhill charge for the next uphill.
    I decided to try something different and compare results. I’ll let you know after this test. It’s possible it doesn’t matter what procedure one uses. Downhills a snap, it’s uphills that are tough.

    This was intentioned for Prius Prime owners only, I am interested only in their opinion. TY
     
    #19 Andyprius1, May 22, 2018
    Last edited by a moderator: May 23, 2018
  20. Digloo2

    Digloo2 Active Member

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    Just out of curiosity, I've read in some posts that the ICE recharges the traction batteries under some conditions. I'm not sure if this is true or not, but if so, it could affect the results of driving on ECO vs. EV, right?
     
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