is there any way force the ICE to charge the HV battery ?

Discussion in 'Gen 2 Prius Fuel Economy' started by Abdullah Jordan, May 8, 2013.

  1. Abdullah Jordan

    Abdullah Jordan Junior Member

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    Hello there ;

    i consider my self a hyper-milage guy , at least in my country and i guess my Gen 2 prius cant give MPG more than i got from her .

    [​IMG]


    so ,,, i got my car about 2 month ago , and i started to understand how she is working ( how the hybrid cars works in general ) , in my daily trip , there is about 5 mile flat road , some times when i reach this road SOC shows 3 bars only , and its not enough for EV that 5 miles road , but if the battery have more than 6 bars i think it will do the job , and if you will ask me why you dont charge it through the car movement , the answer is very simple , because iam gilding the car before getting that flat road , so , is there any why to force the ICE charging the HV battery ?

    Abdullah
     
  2. Abdullah Jordan

    Abdullah Jordan Junior Member

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    Hello there ;

    i consider my self a hyper-milage guy , at least in my country and i guess my Gen 2 prius cant give MPG more than i got from her .

    [​IMG]

    so ,,, i got my car about 2 month ago , and i started to understand how she is working ( how the hybrid cars works in general ) , in my daily trip , there is about 5 mile flat road , some times when i reach this road SOC shows 3 bars only , and its not enough for EV that 5 miles road , but if the battery have more than 6 bars i think it will do the job , and if you will ask me why you dont charge it through the car movement , the answer is very simple , because iam gilding the car before getting that flat road , so , is there any why to force the ICE charging the HV battery ?

    Abdullah

     
  3. cwerdna

    cwerdna Senior Member

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    any issues with 3 month storage | PriusChat

    I'm not sure doing this will help your mileage much/at all, in the end.

    Assuming there's not much traffic on that road, you aren't an obstruction and the speeds are below 41 mph (~65 kph), you could try pulse and glide. See http://www.cleanmpg.com/forums/showthread.php?t=1224. It enabled these guys to get great mileage: Hybrid drivers complete run for mileage mark.

    If the speeds are higher, you could try "superhighway mode", but you need something to monitor ignition timing. It doesn't work for speeds that are too high though. :( See SHM (Super Highway Mode) or alternative for 65-75 mph range? hints? | PriusChat.
     
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  4. Rokeby

    Rokeby Member

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    The control algorithms prefer SOC around 60-65%, 5-6 blue bars.

    You can force charge the Gen2 Prius HV battery to 8 blue bars by:
    * Accumulating regen when going down a long hilll, or
    * Bringing to car to a full stop and with the car in Drive and one
    foot on the brake to keep the car stationary, step on the go-pedal,
    the accelerator, until 8 blue bars shows.

    However, running the car in pure EV alone foe more than short
    distances is very inefficient and will lead to poor MPG as the computers
    pull all kinds of tricks, outright and subtle to get SOC back up to
    60-65 %.

    The most efficient way to get across the 'flat' would be to start out at 6
    blue bars and then proceed without putting electricity into or taking
    electricity out of the HV battery; no yellow arrows in or out.

    Here is a little game I created to help me internalize the right go-pedal
    movement to get no yellow arrows to or from the HV battery.

    I noticed that even under even, steady acceleration sometimes the yellow
    arrows went into the battery. Then moments later, they switched to going
    the other way. Nowhere had I read what I was supposed to do to get no
    arrows. Many posts talked about the no-arrow state, but none I had read
    told how to achieve it.

    So, I fiddled with very small go-pedal inputs. I found that when the yellow
    arrow was pointing up, into the battery, more go-pedal made it go away.
    When the yellow arrow pointed down and to the left, out of the battery,
    letting up on the go-pedal made it go away

    The Snake Game

    To make the needed correction I needed to react instinctively, instantaneously,
    without thinking. In the Snake Game the yellow arrow is a snake, let's say
    a king cobra. When the cobra rears up threateningly, you step --very, very
    gently of course -- on its head and he disappears. If the cobra is slinking
    away off to the left, you hasten his departure by easing up on the go-pedal.
    Kind of childish, but it worked for me.

    Read more: 50+ MPG -- A Newbie's Quest | PriusChat
     
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  5. Paradox

    Paradox Prius Enthusiast / Moderator
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    Both of your threads merged. Pease do not post the same thing twice in multiple forums, thanks.
     
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  6. Drafty01

    Drafty01 Junior Member

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    I find driving with the heating turned up quite high - like 28 to 30 deg C - forces the engine to deliver hot water, in doing so, needs to keep running to stay warm, also charging the battery.

    Not so comfortable in summer though...

    I'm in New Zealand, and it's mid autumn (fall) here.
     
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  7. Abdullah Jordan

    Abdullah Jordan Junior Member

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    thanks all , i decide that force ICE charging the HV battery will harm my MPG + wast of time , so i will let the car do what is suppose to do ...

    Abdullah
     
  8. boppo

    boppo Active Member

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    Good idea!
     
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  9. Abdullah Jordan

    Abdullah Jordan Junior Member

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    but i have 60+ MPG :p , sure that a good ideas applied , so some times my ideas just fine :)
     
  10. dorunron

    dorunron Senior Member

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    Hi Abdullah,

    Actually you are doing very good especially for someone who just started driving the Prius. As was mentioned earlier, learn about hypermiling and try to apply it when you can.

    Don't get me wrong, 60 is VERY good for what you are driving. Keep up the good work!

    Ron
     
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  11. HaroldW

    HaroldW Active Member

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    You can force charge your pack by, foot on the brake and full throttle. The Prius will govern things. H
     
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  12. Abdullah Jordan

    Abdullah Jordan Junior Member

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    hello Ron , yes i got you , thanks for helping me always ...
     
  13. DarkPri503

    DarkPri503 Junior Member

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    I would suggest flipping on the cruise control for that stretch? I can imagine that the onboard ECU will try and give you the best mpg, but also want to recharge your HV...

    Just a thought from a Prius noob :)
     
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