Evan's turn for the PHV Prius!

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

  1. CivicQc

    CivicQc The world needs more prius

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    efusco, what happens if you turn the heater on when the engine is cold while running in EV mode? Do you get heat from an electric heater? Or can you hear the AC unit running (e.g. as a heat pump unit)?
     
  2. Flaninacupboard

    Flaninacupboard Senior Member

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    While in EV mode there's less chance of needing the ICE. At 60 when the ICE does start MG1 speed has to go from ~9000RPM to ~4500RPM. Is that difficult for some component?

    So maybe in EV mode it's allowed because there's less risk of the 9000 to 4500 jump, but in HV mode we know it will always happen (no hill is infinite!)
     
  3. efusco

    efusco Moderator Emeritus
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    It has a heat pump system--it's quite complex how it works...but trust me that it works quite well.
     
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  4. CivicQc

    CivicQc The world needs more prius

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    Thanks.

    Have you been in a situation where you could actually recharge the long range battery by a significant amount by regenerative braking down a long hill, and noticing that it does actually increase the displayed remaining EV range?

    Edit 15:00 July 31:
    Also have you had the chance to test the TRAC system on a gravel road in EV mode?
     
  5. linuxpenguin

    linuxpenguin Active Member

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    Ooh yes, I was wondering this too but I think I know the answer already from piecing information together. Apparently the charge-deplete battery and charge-sustain battery are completely separate and only one can be used at a time--thus once you deplete and switch over to the standard hybrid battery it cannot charge the charge-deplete battery no matter how full the hybrid battery gets. Is this consistent with what you guys have seen in the field?

    Andrew
     
  6. efusco

    efusco Moderator Emeritus
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    ~250 miles Nixa, MO to St.Louis,MO
    '04 Prius 50.2 MPG
    PHV Prius 52.6 MPG (included ~10 miles EV)


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  7. SageBrush

    SageBrush Senior Member

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    About 49.86 mpg in CS mode. If the number holds up that will be brilliant.
     
  8. DaveinOlyWA

    DaveinOlyWA 3rd Time was Solariffic!!

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    cool report here. one question; when driving 60 mph, is there a noticeable change in the sound than the 2004 at the same speed? can you hear the motor run at higher speeds?
     
  9. efusco

    efusco Moderator Emeritus
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    I could not appreciate a sound difference, or even an RPM difference. I should have added above, our avg speed, per the HSI, was 66MPH.


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  10. Flaninacupboard

    Flaninacupboard Senior Member

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    It's the same speed, MG2 is linked straight to the driveshaft remember.

    It may however sound different due to the load it's under (and the inverter may make different noise, though you probably wouldn't hear that over the road&wind noise).
     
  11. efusco

    efusco Moderator Emeritus
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    In theory, the gen 3 will run @ lower RPM b/c it is a 1.8L ICE vs the 1.4L of the Gen 2


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  12. linuxpenguin

    linuxpenguin Active Member

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    Since there has been talk of scangauge on this thread with the 2010 PHV--has anyone been able to successfully pull the pack voltage on the 2010 PHV through scangauge while driving?

    It would be interesting to know what the deplete pack voltage is when the pack is fully charged, in the middle and just before fully depleted. The parameter you probably are after is called "System Resource V" instead of total pack voltage since that would be the total voltage available to the inverter. One would need to make sure to pull the value before the pack switches over since then "System Resource V" would be the voltage of the hybrid pack and not the deplete pack...

    Once we can determine the rough discharge curve for the pack voltage we can pretty definitively determine what battery chemistry Toyota is using (yes I know its Lithium Ion, I and likely others would be more interested in what particular type).

    Any of you PHV test drivers brave enough to try? :)

    Andrew
     
  13. efusco

    efusco Moderator Emeritus
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    Andrew, I'm brave enough to try, but have no idea how. I'm too much of a SG novice to know where to start and don't have much 'awake/not working' time left with the PHV.

    BTW folks, Almost 500 mile round trip, 98% interstate (cruise at 72mph) overall average speed =60mph per HSI and FE average was 50.7MPG. On the way home all 5 members or my family were in the car, on the way up just 3 of us. I-44 b/w St. Louis and Nixa, MO if you wanna check out the terrain, some pretty serious hills.
     
  14. linuxpenguin

    linuxpenguin Active Member

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    I'm happy to help if you or someone has a few minutes to try some things. I'll try and track down the PID for you/whomever though it may be different for the PHV (only one way to find out though).

    EDIT: Mmmm, bummer. Looks like the system resource V parameter is in a multi-framed message which if I'm not mistaken the current scangauge isn't capable of polling. Is anyone aware of a work-around for scangauge to poll multi-framed parameters?

    Andrew
     
  15. DaveinOlyWA

    DaveinOlyWA 3rd Time was Solariffic!!

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    So on your trip You were still able to benefit from minimal ev operations Did not see a significant penalty 4 carrying around the extra battery weight.
    Mmm well that is pretty cool
     
  16. efusco

    efusco Moderator Emeritus
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    Correct, charged only on the front end of the trip, I reset the Trip A after topping off gas and had about 11 miles EV range--used most of that up before I got to the highway. Could not find anywhere to charge in the garage in St. Louis so had to suffer the city segments in HV mode.
     
  17. efusco

    efusco Moderator Emeritus
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    The round trip HSI


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  18. Tideland Prius

    Tideland Prius Moderator of the North
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    Btw Evan, I noticed this with the regular Gen 3 and was wondering if the same occurs on the PHV.


    When doing N-G on a Gen 2, if you past 65km/h, the engine will come on and you'll be using fuel until you switch back to D and warp stealth or go into SHM.

    On the Gen 3, surpassing the 70km/h threshold in N-G does not engage the engine. In fact, it stayed off even when I touched 78km/h on a slight downhill....

    This may slightly change the way we see rolling hills (i.e. we're not as tied to the 70km/h threshold as we are on the Gen 2 because the engine won't come on in neutral on the Gen 3).


    This question relates back to you wondering about EV at higher speeds instead of warm stealthing.

    Update: Engine has to be fully warmed up. (S4?) If not, it'll spin in neutral at any speed above 70km/h
     
  19. efusco

    efusco Moderator Emeritus
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    so, my commute that I was sure was 13 miles is, apparently, actually 14.9 miles according to the ODO on the Gen III--perhaps I hadn't been paying attention.

    I'd actually gone about 12.9 miles in EV when I hit the 1.6 mile mandatory ICE start up situation. And still showed an EV range of 1.3 miles when I got to work 2 miles later. I'd have been darn close to making it all the way on EV alone.

    Jon, I'll have to give your question some thought when I have a chance later.
     
  20. MJFrog

    MJFrog Active Member

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    OK. Personal experience doing N-G in a GEN II (must be in S4): If neutral is engaged at or <40 mph, the ICE will shutdown. If you are on a hill (or in my case a bridge) and your speed increases above 40mph, the ICE will remain off (verified with Scangauge with RPM gauge).

    If neutral is engaged at 41 mph or greater, the engine does not shutdown.