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My Duinomite Mega Canview V4 equivalent Project

Discussion in 'Prius PHEV Plug-In Modifications' started by lopezjm2001, Jul 19, 2012.

?

Do you find the CANVIEW program usefull?

  1. Yes

    11 vote(s)
    100.0%

  2. Prefer to use Android Torque device

    0 vote(s)
    0.0%

  3. Prefer to use Scangauge

    0 vote(s)
    0.0%
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  1. Flying White Dutchman

    Flying White Dutchman Senior Member

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    As far i know you can use both in mmbasic ;-)

    -Htc Tapatalk ( sorry for auto spell correct )
     
    #141 Flying White Dutchman, Aug 10, 2012
  2. jdh2550

    jdh2550 Co-Founder, Current Motor Company

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    CAN Commands status update:

    Good News: The channel rcv command is much faster - ~60 msec to gather ten separate CAN ids. :)
    Bad News: The data is complete junk :(

    Ah well, I knew it was too good to be true when they just seemed to work straight away...

    Watch this space...
     
    #142 jdh2550, Aug 10, 2012
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  3. Flying White Dutchman

    Flying White Dutchman Senior Member

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    so you only need 60msec now.. how "fast" fast it before?

    and garbage can be cleaned up ;-)
     
    #143 Flying White Dutchman, Aug 11, 2012
  4. Flying White Dutchman

    Flying White Dutchman Senior Member

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    Relay board in and working uploadfromtaptalk1344693616076.jpg

    -Htc Tapatalk ( sorry for auto spell correct )
     
    #144 Flying White Dutchman, Aug 11, 2012
  5. lopezjm2001

    lopezjm2001 Senior Member

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    Today I drove 142 km in mixed mode on a Sunday drive. I got 3.0 l/100km fuel economy for the 142km trip. I normally drive in forced EV mode. It was interesting to watch the ICE kw reading whilst driving . The maximum value I saw was 35 kw. So if the maximum battery assist power is 20kw then I assume that the maximum total power used including battery assist is about 55kw at any point in time. Does anybody have any idea what the maximum kw combined mechanical power and battery assist power is used at any point in time. Maybe Planetaire has a graph to show us.
     
    #145 lopezjm2001, Aug 12, 2012
  6. planetaire

    planetaire Plug in 20 kWh 85 km/h or > 208km range

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    Yes. For example this one:

    Power in kW
    Acceleration.PNG
    Horizontal axis is time (10 points/second)
    The combined power (light blue curve) have been up to 85 kW
    MG1 34,6 kW max
    MG2 49 kW max
    ICE 61,6 kW max ;)

    Torque in Nm:
    Acceleration_Nm.PNG

    That was a 42 up to 93 km/h drive. (French version)
    Note that the boost converter goes up to 76°C. :eek:

    Data read on can bus, using sollicitated pid. With the stock nimh only (no lithium cells)

    :)
     
    #146 planetaire, Aug 12, 2012
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  7. jdh2550

    jdh2550 Co-Founder, Current Motor Company

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    <Oops I can't add... I deleted this post deleted because it was dumb!>
     
    #147 jdh2550, Aug 12, 2012
  8. jdh2550

    jdh2550 Co-Founder, Current Motor Company

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    OK, second try at interpreting this...

    I presume Planetaire has a Gen 3 Prius (1.8L engine) whereas a Gen 2 Prius has a 1.5L engine. So, us Gen 2 guys will see a max around 73 kW.

    Now, I'm still confused about the kW figures for MG1 and MG2? What do they represent? That's not power they're producing because it's higher than the NiMH pack is putting out.

    Is kW MG1 + kW MG2 + losses = kW total?

    If so then at peak that's approximately

    35(MG1) + 45(MG2) + losses = 85

    (so losses = 5kW or about 6% which equates well to transmission efficiency losses)

    Doesn't power flowing through MG2 represent power to rear wheels? Does that mean only ~53% of power generated is going to drive the vehicle? (calculated as 45/85)

    That seems wrong! o_O
     
    #148 jdh2550, Aug 12, 2012
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  9. lopezjm2001

    lopezjm2001 Senior Member

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    Planetaire definitely has a 2nd Gen Prius as he is using a BMSplus which only works on a 2nd Gen.

    I think that the power produced by MG1 does not drive the Prius but produces the extra power that the NIMH (can only supply about 25kw at most) cannot supply to MG2. I think that MG2 is rated for 50 kw (well my Bentley manual says MG2 has a maximum output of 50kw). So the power that comes from MG1 should come from the ICE. So at most times the total power is the sum of NIMH power and ICE power. So MG1 is only a motor when starting and thereafter it is a generator only to provide feedback about MG2 for power split control between MG2 and the ICE. So my Bentley manual says.

    Also the ICE has a maximum output of 52 kw at 4500 rpm. So total maximum power combined is 102 kw in theory.

    But I could be wrong.
     
    #149 lopezjm2001, Aug 12, 2012
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  10. planetaire

    planetaire Plug in 20 kWh 85 km/h or > 208km range

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    I have a gen2.

    Yes, Lopezjm you are right, just add ICE power and Battery Power give total combined power.
    It would have been better reducing battery power, say 7-10%, because losts in IGBT and MG2.

    The only strange thing was that my ICE don't reduce his torque over 4000 rpm.

    :)
     
    #150 planetaire, Aug 12, 2012
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  11. jdh2550

    jdh2550 Co-Founder, Current Motor Company

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    Yes, I agree that total = ice + nimh.

    Peak power for a Gen 2 is 110HP = 82kW - so I guess the quoted figure is either pessimistic or is measured at the wheels not at the crank. I presume planetaires ICE figure is equivalent to "at the crank".

    So at peak on that first graph and if I understand your description of MG1.

    NiMH = 23 kW
    MG1 = 34kW
    MG2 = 46kW
    ICE = 62 kW

    Total = NiMH + ICE = 85kW

    MG2 is drawing 23KW from NiMH but putting out 46kW so, the extra 23kW is coming from MG1 which in turn is coming from the ICE.

    Expressing that as formulas:

    MG2 = NiMH + "part of MG1"
    rearranging and you get "part of MG1" = MG2 - NiMH
    "part of MG1" = 23

    Total = MG2 + (ICE - part of MG1) = 46 + (62-23) = 85kW

    OK, so that seems to make sense.

    However, MG1 is producing 34 kW. So where is "the other part of MG1" going - one would assume driving the A/C, power steering, brakes, water pump?, efficiency losses etc. However, that remainder is 34-23 = 11kW. That's a lot of power 11/85 = 13%.

    If someone can explain planetaire's graphs that would be great. If not, no worries! I think we all agree that

    Total Power = NiMH power + ICE power
     
    #151 jdh2550, Aug 12, 2012
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  12. lopezjm2001

    lopezjm2001 Senior Member

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    The ICE is rated for a maximum of 52kw at 4500 rpm. So why should the Torque reduce? Your graph peaked at 48kw so there is still 4kw of grunt left under the bonnet.
     
    #152 lopezjm2001, Aug 12, 2012
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  13. planetaire

    planetaire Plug in 20 kWh 85 km/h or > 208km range

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    jdh2550
    From Nimh, you may have 10% lost (from the 24 kW) in the boost converter, MG2_IGBT and in MG2 = 2.4 kW
    From MG1 to MG2 you have MG1 lost, MG1_diodes lost, MG2_igbt_lost, MG2 lost. Total probably 20% lost from 34kW say 6.8kW

    So Nimh+MG1 give (24-2.4) + (34-6.8) = 48.8 kW, not exactly 46 kW.

    @Lopzjm

    What Toyota give:
    ICE max power is 57 kW and 5000 rpm so torque is 109 Nm
    ICE max torque is 115 Nm at 4200 rpm.
     
    #153 planetaire, Aug 12, 2012
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  14. lopezjm2001

    lopezjm2001 Senior Member

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    ...
     
    #154 lopezjm2001, Aug 12, 2012
  15. Flying White Dutchman

    Flying White Dutchman Senior Member

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    to the rear wheels?
    you mean inside the planitair gearset?
     
    #155 Flying White Dutchman, Aug 12, 2012
  16. NortTexSalv04Prius

    NortTexSalv04Prius Active Member

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    JdH/ Lopez
    I am still trying to find/buy/purchase monitor but stay within a "cheap" budget on lcd/tft monitor.....I already know I want a small frame size so 10- 7 inch monitor. However I am confused will the video feed from a car monitor with red/yellow video feed work with the dm mega?? Like a back camera monitor??VGA is old tech and really really do not want to buy then be unable to use..
     
    #156 NortTexSalv04Prius, Aug 13, 2012
  17. Flying White Dutchman

    Flying White Dutchman Senior Member

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    Duinomite is old tech to in a new Updated pack ;-) ita based on old slow chips but we can use it and have fun with it
    A dvi capable pc stil can output vga so you can use that old vga for something else and there are convert cables.
    Also lilliput got screens with vga and hdmi...

    -Htc Tapatalk ( sorry for auto spell correct )
     
    #157 Flying White Dutchman, Aug 13, 2012
  18. lopezjm2001

    lopezjm2001 Senior Member

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    VGA offers the best screen resolution for this Duinomite Mega package. It also has a RCA composite video output but it has a lower resolution than VGA. Most 7" LCD screens have a VGA output and a RCA composite output and are cheap. A HDMI output is wasted on a 7" screen. HDMI is meant for big monitors for watching TV. I think you can also get HDMI to VGA adaptor cables.
     
    #158 lopezjm2001, Aug 13, 2012
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  19. Flying White Dutchman

    Flying White Dutchman Senior Member

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    maybe a serial interfacing LCD would be something in the future
    its cheaper then a touchscreen 7 inch and its also small like a scangause screen
    it can display info and have the button( some of then have buttons ) to switch PHEV and EV and toggle screens.
    its alitle to small do display al the info in one screen ( maybe the nokia screens can be used for this )
    but then again maybe this wil slowdown the program even more?
     
    #159 Flying White Dutchman, Aug 13, 2012
  20. NortTexSalv04Prius

    NortTexSalv04Prius Active Member

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    #160 NortTexSalv04Prius, Aug 13, 2012
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