Evan's turn for the PHV Prius!

Discussion in 'Gen 1 Prius Plug-in 2012-2015' started by efusco, Jul 22, 2010.

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  1. efusco

    efusco Moderator Emeritus
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    Minor report...
    The PHV Prius (#5) was dropped off right on time about 10am this morning. Unfortunately, I work nights and thus got up only long enough to take the keys and see the driver who brought it off to the airport in a cab. He'd driven from Chicago, so obviously the battery was depleted, so I put it straight onto the charger.

    And there it has sat all day while I slept. After dinner I did install Jay's Scan Guage so that's ready for when I leave for work in about an hour.

    Haven't had a chance to "check" the tire pressures yet...need to do that for sure at some point. Thinking I'll just drive it, with AC, on the highway route to work just to see how it does. I suspect I'll run out of EV just before getting to work (13 miles). But, we'll see.

    I've got one more night shift after tonight, and should get some more 'wheel time' starting Wed. and thur. and through the weekend when we'll take the PHV about 3 1/2 hours away to St. Louis (anyone in the area wants to see it, PM me) where I'll be handing off my '04 to my uncle for safe keeping while I'm out of the country.
     
    #21 efusco, Jul 26, 2010
  2. SageBrush

    SageBrush Senior Member

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    Evan, any chance of a PH(ev) and HV outing together, for an MPG challenge ? I want to know how the PH(ev) does in HV mode compared to the G2 Prius.
     
    #22 SageBrush, Jul 26, 2010
  3. efusco

    efusco Moderator Emeritus
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    Already planning on that. We'll be driving the PHV and my 2004 up to St.Louis. I plan to top off the tanks and reset the MPG. I'll start with a full battery (or almost full) on the PHV and will just compare MPG when we arrive in St.Louis.
     
    #23 efusco, Jul 26, 2010
  4. SageBrush

    SageBrush Senior Member

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    If you take an intermediate mpg and distance reading we can do the arithmetic.
     
    #24 SageBrush, Jul 26, 2010
  5. ken1784

    ken1784 SuperMID designer

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    I'm new to this thread, but what kind of tires does the PHV Prius have?
    The Japanese version has 185/65R15 Goodyear GT3 summer tires.

    Ken@Japan
     
    #25 ken1784, Jul 27, 2010
  6. HTMLSpinnr

    HTMLSpinnr Super Moderator
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    The PHVs I saw had the Yoko AVID S33s
     
    #26 HTMLSpinnr, Jul 27, 2010
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  7. Jands

    Jands New Member

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    Even better if there was a standard G3 too...that way we can get an idea of how the extra battery weight affects the mpg (I am of course assuming that the PHEV weighs more than the standard G3).
     
    #27 Jands, Jul 27, 2010
  8. efusco

    efusco Moderator Emeritus
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    First report...Couldn't make it the 13 miles to work in EV...about a mile away the ICE started cycling and doing it's warm up routine even though I showed 2 miles of EV range left. :-(

    I'll see if I do any better on the way home (maybe a slight elevation drop).

    But clearly the hills are painful for EV in a car of this weight. I did great on the flats, but I can't avoid hills.
     
    #28 efusco, Jul 27, 2010
  9. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Can you 'trick' the car into warming up on downgrades?

    Bob Wilson
     
    #29 bwilson4web, Jul 27, 2010
  10. efusco

    efusco Moderator Emeritus
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    I made it home with the EV/HV indicator showing 97% EV for the round trip. I could have made it home on pure EV this morning, but decided to gun it at a light when 2 lanes were going to one, and the ICE kicked in and ran its initial warmup cycle...never came on again after that.

    You could, but the problem is that it just jumps into an S1/S2 condition and begins that initial warmup phase. So, then you'd do a long EV stretch and you'd just be back where you started and have to go through that inefficient phase again later.
     
    #30 efusco, Jul 27, 2010
  11. Rae Vynn

    Rae Vynn Artist In Residence

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    Hey, I'm driving 56 miles each way to work again, highway mostly, through the Black Hills (up and down mountain)... and I also have a bit of stop/go traffic for a short distance.

    Shouldn't Toyota want to test one in Washington state under these conditions? Huh?

    Pick me!! :wave:
     
    #31 Rae Vynn, Jul 27, 2010
  12. usbseawolf2000

    usbseawolf2000 HSD PhD

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    You seem disappointed with 97% EV and 3% HV. That's awesome! :rockon:
     
    #32 usbseawolf2000, Jul 27, 2010
  13. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Owch, so it doesn't remember or sense the Cat temperature, and runs a fixed repeat of the initial 30-45 second warm-up each time. I wonder about the coolant temperature too but that can wait another day.

    Orange4boy demonstrated that full engine and transaxle warm-up with an NHW11 eliminates most if not all of the initial warm-up costs. This is a type of 'thermal' plug-in that I'm beginning to think has a lot of merit beyond just a block heater.

    Thanks for the report,
    Bob Wilson
     
    #33 bwilson4web, Jul 27, 2010
  14. Danny

    Danny Admin/Founder
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    You're right, Tony. I've created a new Prius PHV forum here:

    Toyota Prius PHV Plug-In - PriusChat Forums

    And I've moved this thread into it, as well.
     
    #34 Danny, Jul 27, 2010
  15. Tideland Prius

    Tideland Prius Moderator of the North
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    Sounds consistent with Tony's report of the engine starting its warm-up cycle with 1.6 miles left in anticipation.
     
    #35 Tideland Prius, Jul 27, 2010
  16. efusco

    efusco Moderator Emeritus
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    Bob, I have no way to accurately measure/monitor what's going on, so the second ICE on time may just straight to S2/S3 for all I know...but I think it just goes by the ICE temp, much like the Gen II.

    As I think about it, this might be ripe territory for an ICE temp spoof device. If you have just a few short segments where running on ICE would be beneficial spoof the system into thinking you're already warmed up, gun the accelerator to kick on the ICE for those short segments, then you go back to EV.
     
    #36 efusco, Jul 27, 2010
  17. efusco

    efusco Moderator Emeritus
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    Here's something intersting though...
    I inadvertantly over accelerated from a light very early in my trip home this morning and so had to 'suffer' that warm up cycle for a bit.

    As I got close to home the EV range dropped to 1 mile just before a very steep hill I have to climb right before getting home--I fully expected the ICE to kick in...but it never did.

    It seems that perhaps, it just has to do the warm up cycle once per EV trip....need to experiment more to confirm, but it's worth watching. And as I stated above, I have to wonder if there would be a way to spoof that and avoid the warm up if you know you can stretch the EV and hit your destination within it's range while avoiding the warm up.
     
    #37 efusco, Jul 27, 2010
  18. bwilson4web

    bwilson4web BMW i3 and Model 3

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    See if you can 'punch it on' at the crest of a big hill and let gravity take you down the backside as slowly as possible while the engine warms up. Extra points if a light or stop sign on the downgrade adds a few 10s of seconds to the warm-up without load. <grins> But it may be worthwhile to just park on the downgrade and let the warm-up complete instead of drawing any power before the warm-up stops.

    Bob Wilson
     
    #38 bwilson4web, Jul 27, 2010
  19. Tideland Prius

    Tideland Prius Moderator of the North
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    That might explain my screwy EV Driving Ratio numbers back in May. I think I did have the engine kick in and so it did a warm up cycle and thus my EDR was lower.

    The hill climb you mention is interesting though. Does that mean you maintain the same amount of power throughout the entire EV range? It always seems that in the standard Prius, there's less electrical output as the battery drain (that and the engine is more willing to come on to assist when the battery is low).
     
    #39 Tideland Prius, Jul 27, 2010
  20. efusco

    efusco Moderator Emeritus
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    There is no noticable drop in power that I can detect.
     
    #40 efusco, Jul 27, 2010
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