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EV Mode Switch

Discussion in 'Gen 2 Prius Accessories & Modifications' started by evsam, Jul 20, 2005.

  1. evsam

    evsam New Member

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    Will the EV Mode Conversion From Coastal work on a Classic Prius with CC? I don't see any mention of Classic Prius in all the chat about EV Mode Conversion.
    EVSAM
     
  2. Frank Hudon

    Frank Hudon Senior Member

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    no the programing isn't in the computer like the 2k4-5 models.
     
  3. tochatihu

    tochatihu Senior Member

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    As Frank says. I tried to get a discussion going involving "hidden screen buttons" 4 months ago, but lacked co-conspiritors. Watch for it next 1 April.

    If you "force-charge" the HV battery, the 2001-2003 will EV a bit longer with ultralight use of throttle, but that's it.

    You can EV all day long on a -3% grade road, or at least until the ICE coolant falls below 70oC. Or some number close to that.
     
  4. Frank Hudon

    Frank Hudon Senior Member

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    drops to 59C and it'll start and run to 70C and go into stealth again.
     
  5. evsam

    evsam New Member

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    Thanks for the replies.Since the ICE starts at 59c and cuts out at 70c in stealth mode; is it possible to fool the ICE that it's at 70c all the time, thus keeping in EV mode? Wouldn't this involve shorting the temp sensor or swithing in a resistor?

    EVSAM
     
  6. Frank Hudon

    Frank Hudon Senior Member

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    on the G2 Prius the car will go into EV mode right from cold. No need to get it to temp first.
     
  7. Frank Hudon

    Frank Hudon Senior Member

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    <div class='quotetop'>QUOTE(evsam\";p=\"109513)</div>
    also do a search here on PC and put "4 stages of hybrid operation" in the search and read about the real hybrid operating mode. S4 is where you want to be, that's when all the fun begins.
     
  8. tochatihu

    tochatihu Senior Member

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    At a standstill at least, another ICE control strategy figures in. When the HV battery state of charge falls to 50%, ICE starts, and when SOC rises to 52.5%, ICE stops. Did I remember those setpoints correctly, Frank?

    So even if you fool the temperature sensor, the battery SOC will probably throw some ICE at the issue.
     
  9. Frank Hudon

    Frank Hudon Senior Member

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    DAS I think your right on the BSOC figures. Controllable stealth just isn't in the Classic cards.
     
  10. tochatihu

    tochatihu Senior Member

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    <div class='quotetop'>QUOTE(Frank Hudon\";p=\"109609)</div>
    I need to swap in a weaker accelerator pedal return spring. That thing is a monster.
     
  11. Frank Hudon

    Frank Hudon Senior Member

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    I know what you mean and the next defective sensor on a Toyota forklift that gets changed I've got dibs on the thing as well. Also the next one junked out I'm hoggin the spring too.
     
  12. Frank Hudon

    Frank Hudon Senior Member

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    also the O2 sensors play a big role in the operation of the ICE. If they are allowed to cool the ICE starts.
     
  13. mehrenst

    mehrenst Member

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    <div class='quotetop'>QUOTE(tochatihu\";p=\"109577)</div>
    Actually, on my '05 the ICE doesn't start until after the battery bars drop into the 2nd from last (red). Also, it seems to vary when the ICE stops. Sometimes the ICE will run until the energy display shows three battery bars (2~3 minutes), more often the ICE runs only a short time ~30 seconds.

    Its not clear how to relate the battery SOC to the number of bars shown
     
  14. Frank Hudon

    Frank Hudon Senior Member

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    about 5 months ago or so someone posted here on PC a graphic relating to bars and voltage and BSOC. I'll try searching and see if I can locate it.
     
  15. Frank Hudon

    Frank Hudon Senior Member

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