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AMPs SGII observations on Gen III

Discussion in 'Gen 3 Prius Technical Discussion' started by adrianblack, Jan 11, 2010.

  1. adrianblack

    adrianblack Member

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    Location:
    Los Angeles
    Vehicle:
    2010 Prius
    Model:
    III
    I noticed a few things about the new XGAUGE AMP reading on my SGII on my Gen III.

    EV mode seems to be able to push ~70 amps -- maybe a bit more.

    The car seems to push less amps before the ICE turns on when going past middle line on HSI when the coolant temp is cold. Seems like you can never get it over 30amps. But when warmed up, it seems to go into the 40's.

    Anyone else notice this?

    Another thing -- even when regen is indicated when going a few mph and braking, it doesn't push power into the battery at all.

    Also, when's nice is no power is used when at a stop light -- only when you are almost completely off the brake pedal does the HV ECU start pushing power into MG1.

    Idle power usage:

    Headlights on, radio on, HVAC off - 1.7amps with brakes applies, 1.2amps in neutral.
     
  2. fuzzy1

    fuzzy1 Senior Member

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    Haven't looked at this yet. But undrgnd's reply about the 7mph regen limit reminded me that when the traction battery is absolutely filled (on mountain descents), the regen bar will still light up on what is very obviously pure friction braking.
     
  3. adrianblack

    adrianblack Member

    Joined:
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    Location:
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    Vehicle:
    2010 Prius
    Model:
    III
    That has to be what's happening. The bar is clearly on below 7mph but no charging is happening.

    The most I've seen on the charging is about 75amps, but these highly urban streets in LA where it's hard to get over 35mph even. Since the update speed is relatively slow, it'll take longer smoother application of braking.

    This morning on the way to work I once against observed that when the engine is cold you get less amps into the system. Seems to max out around 25-28amps.

    Once things are warmer, it seems to go up to 40amps-35amps.

    Also, stopped at a traffic light (with brakes applied, in D and HVAC off) seems to use 1.2amps. (Compared to 1.7amps at night with headlights on.)

    But what is interesting (to me) is how much the regen system generates. Quite amazing.