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Custom Enginer PHEV (8kWh)

Discussion in 'Prius PHEV Plug-In Modifications' started by krousdb, Aug 29, 2009.

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  1. krousdb

    krousdb NX-74205

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    Some other observations..... On the highway with CC set to 55MPH, the SoC camps out at 70.5 - 71.0% and BTV is at 234V. On what seems to be flat terrain, instantaneous FE is 110-130MPG with both converters running. RPM is at 1184 which is SHM territory.
     
    #21 krousdb, Aug 31, 2009
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  2. krousdb

    krousdb NX-74205

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    Steve,
    It would be great to have another thread to compare results with this one! Also, can you also post PICC Tech info, similar to the following thread?
    http://priuschat.com/forums/prius-p...d-electric-vehicle-technical-information.html

    Looking forward to your results.
     
    #22 krousdb, Aug 31, 2009
    2 people like this.
  3. TheForce

    TheForce Stop War! Lets Rave! Make Love!

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    18A is able to sustain about 30-35mph on level roads.
     
    #23 TheForce, Aug 31, 2009
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  4. Dan.

    Dan. MPG Centurion

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    Did you manage to look at CCL or OEM Battery temps during your commute?
    Indeed. Since the kit "pollutes" the BTA reading with extra 18A of regen, it may not be easy to see SHM. You would really need to check MG1 RPM which is a nut I haven't yet cracked on the SGII. But what I'm finding is if you hold your throttle constant ("gps" gauge) you should hit SHM sooner or later. The other ways to tell if you've hit it (outside of gps) is to look for IGN=14, TPS=17, but I'm almost certian you would be in that territory by this point.

    11011011
     
    #24 Dan., Aug 31, 2009
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  5. mrbigh

    mrbigh Prius Absolutum Dominium

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    Steve, thank you very much for sharing the experiences you'r having with the PICC kit. I can wait reading the future chapters of the install and use but please, open another thread dedicated to this PICC Kit. This one is solely for the krousdb Custom Enginer PHEV (8kWh)
    Please insert a link to your new thread for people to fallow.
    Thank you
     
    #25 mrbigh, Aug 31, 2009
    1 person likes this.
  6. krousdb

    krousdb NX-74205

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    Both came up blank. I have version 3.17 which shows BTV just fine.
     
    #26 krousdb, Aug 31, 2009
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  7. krousdb

    krousdb NX-74205

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    Your current kit will do that. When starting your car, engage EV mode and wait until you get 8 green bars on the battery icon. Then take your short drive. If you get below 6 blue bars, pull off to the side of the road and wait until you get 8 green. Repeat as necessary.
     
    #27 krousdb, Aug 31, 2009
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  8. cabledave

    cabledave Member

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    I would only add, after experiencing 90 to 100 degree temps here in San Diego the last few days, that the above applies only to the point where your HV battery temp exceeds the temp allowed for EV.

    It has been impossible to get the system to EV during these high temps. People should be aware of this.
     
    #28 cabledave, Aug 31, 2009
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  9. Dan.

    Dan. MPG Centurion

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    That "point" is 45 degC (113 defF). I've got a meat thermometer in the trunk of my car, you can put a digital one there if you like. It usually reads about 98-102F. The alternative to the meat thermometer is to get a gauge that will let you read battery temp directly. Any CAN tool should do it. My CAN tool usually gives a starting battery temp fairly low. The hottest STARTING temp I've seen (with the meat thermometer over 102F) was a reading of 41C (105F). I've seen operation temps get to 50c, and I know that the battery FAN will come on somewhere north of 50c.

    Once it gets hot, if you park it and leave it, it will stay hot for a LONG time. I like to monitor battery temp and if it gets over 43C I crank up the A/C, aim the vents to the battery and really baby the whole battery system. Regen seems to generate a LOT more heat that assist does btw.

    11011011
     
    #29 Dan., Aug 31, 2009
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  10. Dan.

    Dan. MPG Centurion

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    If you have a CAN tool and monitor the battery volts, as long as your in EV and above 200v you should be able to tool along. As you press the throttle the battery volts will drop so under 4 bars, EV becomes pretty anemic. Also, EV-Mode will kick out at a SOC (viewable with a CAN tool) of 45%.

    11011011
     
    #30 Dan., Aug 31, 2009
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  11. MJFrog

    MJFrog Active Member

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    I can try the 8 green bars thingy and take it a little more easy on accel., but I'm not going to pull over at 6 and wait to get 8 green again. I could push the car to the store faster than that. :rolleyes:
     
    #31 MJFrog, Aug 31, 2009
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  12. imwoody36

    imwoody36 the prius parts guy

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    The link is here for the picc thread

    http://priuschat.com/forums/prius-p...ug-in-conversions-6-5kw-kit-installation.html
     
    #32 imwoody36, Aug 31, 2009
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  13. Flying White Dutchman

    Flying White Dutchman Senior Member

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    nice job TS.
    but what about the total cost.
    is it not going to be close to a already know plugin conversion kit?
     
    #33 Flying White Dutchman, Aug 31, 2009
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  14. krousdb

    krousdb NX-74205

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    The total cost was $5100 which includes shipping.
     
    #34 krousdb, Aug 31, 2009
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  15. kiettyyyy

    kiettyyyy Plug-In Supply Engineer

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    No, I meant the chargers. Not the DC/DC converter.

    My worry is if I attempt the same 2 battery charger system wired in parallel, I'd blow a typical 20amp 120VAC outlet.
     
    #35 kiettyyyy, Aug 31, 2009
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  16. krousdb

    krousdb NX-74205

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    Most circuits are 15A. Two chargers would pull about 16A. It's worth a try. When I get my 2nd charger I will give it a try. If the breaker trips, just reset it and find a 20A circuit.
     
    #36 krousdb, Sep 1, 2009
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  17. hobbit

    hobbit Senior Member

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    One way to think about the Enginer kit is that you're using the
    Prius battery as a buffer -- slowly bleed charge into it from
    the Li pack, but if you then put a high demand on the car it's
    going to pull the stock pack down and you'll have to wait for
    the Enginer kit to slowly fill it up again. Krousdb can fill
    it a bit quicker with two converters working on it, but it's
    still not going to sail him over any mountains in EV mode.
    .
    "It's not a BEV"
    "It's not a BEV"
    "It's not a BEV"
    ...
    .
    _H*
     
    #37 hobbit, Sep 1, 2009
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  18. MJFrog

    MJFrog Active Member

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    True. And if you're not careful, the ICE will try to recharge the Prius battery faster/before the Enginer kit will get in.
     
    #38 MJFrog, Sep 1, 2009
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  19. krousdb

    krousdb NX-74205

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    8/31/09 Evening Commute

    Charge Info
    Begin Charge Aux Pack Voltage = 52.7
    End Charge Aux Pack Voltage = 52.7
    Actual kWh used = 0
    kWh to Aux Pack = 0

    Readings
    Beginning Aux Pack Voltage = 52.7
    Beginning OEM Pack SoC = 71.0
    Miles Driven = 62.6
    End Aux pack Voltage = 48.0
    End OEM Pack Soc = 53.5

    Driving Conditions
    Wet roads.
    Ambient Temp = 66F
    Winds = 10 MPH Headwind:mad:
    Windows Closed
    Fan set to level 2, no AC.

    Route (Partial Hypermiling Route)
    3.6 Miles suburban at 25-50 MPH
    39.0 Miles on the Interstate, CC set to 55MPH
    20.0 Miles suburban at 35-50 MPH
    62.6 Miles total

    Results
    Trip ScanGauge MPG = 78.4
    Current Tank = 131 Miles
    Tank ScanGauge MPG = 86.4
    Tank MFD MPG = 86.9

    Analysis
    Wet roads, 10 MPH headwind and cooler (66F) temperatures. Under these conditions I would normally get 60 MPG on the way home from work using this particular route. My first converter shut down at 104 miles (since last charge) and the second converter shut down at 110 miles. At that point, I had 81 MPG showing on the SG. So I only had about 50% of this trip with PHEV. After I lost assist, I changed to my (Hypermiling) route to help salvage my tank numbers. The route is shorter but takes more time.

    PHEV Performance
    81/60 = 35% Improvement while under PHEV assist.
     
    #39 krousdb, Sep 1, 2009
    2 people like this.
  20. krousdb

    krousdb NX-74205

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    9/01/09 Morning Commute

    Charge Info
    Begin Charge Aux Pack Voltage = 48.0
    End Charge Aux Pack Voltage = 55.8 (still charging from yesterday)
    Actual kWh used = 10.70
    kWh to Aux Pack = 9.27 (Also includes bumping up the OEM SoC from 53.5 to 72.0%)

    Readings
    Beginning Aux Pack Voltage = 55.8
    Beginning OEM Pack SoC = 72.0
    Miles Driven = 62.6
    End Aux pack Voltage = 51.9
    End OEM Pack Soc = 71.5

    Driving Conditions
    Dry.
    Ambient Temp = 66F
    Winds = 10 MPH Tailwind :D
    Windows Closed
    Fan set to level 2, no AC.

    Route (Full Hypermiling Route)
    23.0 Miles suburban at 25-50 MPH
    27.0 Miles in the Interstate, CC set to 55MPH
    12.6 Miles suburban at 35-50 MPH

    Results
    Trip ScanGauge MPG = 116 :rockon:
    Current Tank = 194 Miles
    Tank ScanGauge MPG = 94.9
    Tank MFD MPG = 94.6

    Analysis
    I switched over to my high MPG route. It is shorter by about 5 miles but takes about 10 minutes longer, 90 min vs 80 min. My best previously on this route, with 10MPH tailwind was 72.3 MPG :D

    PHEV Performance
    116/72.3 = 60.4% Improvement
     

    Attached Files:

    #40 krousdb, Sep 1, 2009
    2 people like this.
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