ICE warmup right before shutdown

Discussion in 'Gen 1 Prius Plug-in 2012-2015' started by markabele, Jul 11, 2013.

  1. markabele

    markabele owner of PiP, then Leaf, then Model 3

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    You know how it goes...you turn the last corner to your house only to see that last precious .1 mile disappear and see the engine come on.

    So the question is...do you let it finish it's ceremonial warmup or do you do shut er down and say "NO SOUP FOR YOU!" ?
     
  2. priuskitty

    priuskitty PIP FAN

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    NO SOUP:mad:
     
  3. bisco

    bisco cookie crumbler

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    arghhh!!!!! :cool: i let it run in the winter until it shuts down. spring and fall for a minute or two and 30 seconds in summer. not sure why tho...
     
  4. andyprius

    andyprius Senior Member

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    If you can get 100mpg bars on flat or downhill rolls in HV Eco, then it is worthwhile going into Hv mode early and saving EV for a better situation, such as uphill. I guarantee you will still have plenty of charge left going home.:cool:
     
  5. andyprius

    andyprius Senior Member

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    I am not sure why either, enrichen the oil conglomerates?:X3:
     
  6. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

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    It is pretty important to get your engine up to full operating temperature if you are going to use it. Taken and slightly edited to fit the discussion from another source:

    Here's why it matters: One of the byproducts of engine combustion is water. When an engine reaches its operating temperature that water turns to vapor and is expunged, either out the tailpipe or the crankcase ventilation system. On a short trip, however, that water stays inside your car's engine and exhaust. Unfortunately, water is one of only three ingredients necessary to make rust (you've already got the other two, oxygen and metal), and rust kills.

    A further complication of condensation and water is that it dilutes your oil, which then does a poorer job of lubricating the engine.
     
  7. mrbigh

    mrbigh Prius Absolutum Dominium

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    I let it go until it stop by itself to avoid water condensation build up
     
  8. markabele

    markabele owner of PiP, then Leaf, then Model 3

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    I think letting it run til it's done is probably a good "better safe than sorry" policy to have. It uses very little gas and could aid in the longevity of the ICE.
     
  9. Tracksyde

    Tracksyde Member

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    I agree it's "better safe than sorry". If I was just arriving home and the ICE was still warming up, I'd probably wait (although this never happens to me, at least not yet).

    But what I cant stand is, if I'm moving my car around on the driveway (with no charge) to wash it and the engine comes on.. that warm-up seems to take forever. I did wait in the past. But I dont anymore.
     
  10. bisco

    bisco cookie crumbler

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    that's why i plug in before moving, only takes a minute for enough charge.
     
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  11. 3PriusMike

    3PriusMike Prius owner since 2000, Tesla M3 2018

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    I generally will try and switch to HV when I know it will be close so that I save an EV mile or two for the final drive home. If the ICE does come on, I just shut it off.

    Mike
     
  12. markabele

    markabele owner of PiP, then Leaf, then Model 3

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    Hopefully you never leave any EV remaining.
     
  13. ny_rob

    ny_rob Senior Member

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    If I'm just around the corner from my house and I run out of EV and HV power? I'll get out and push it home :D using LP (Leg Power).
     
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  14. retired4999

    retired4999 Prius driver since 2005

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    You da man! Go leg power! :D
     
  15. retired4999

    retired4999 Prius driver since 2005

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    I sure hope those are good looking legs! :eek:
     
  16. markabele

    markabele owner of PiP, then Leaf, then Model 3

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    creepy
     
  17. retired4999

    retired4999 Prius driver since 2005

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    My point exactly! :whistle:
     
  18. 3PriusMike

    3PriusMike Prius owner since 2000, Tesla M3 2018

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    Many times I end up with two to three tenths of a mile EV when I get home. But I figure it is much better to run HV efficiently (usually freeway speeds) for a couple of miles with a complete warmup cycle than to run out of EV a few blocks from home and have the ICE start and run while sitting some of the 3 or 4 red lights I usually get between the freeway and home. And then, if I need to move the car in/out of the garage I have enough EV to do it without the ICE starting. As it is I get 70-80% EV anyway...I'm not losing much by not getting that last 0.01%.

    Mike
     
  19. markabele

    markabele owner of PiP, then Leaf, then Model 3

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    The engine during warmup doesn't contribute to propulsion. So not only are you leaving EV on the table but you are not getting to use the extra mile+ that is in the HV. If you need to move it just plug it in for a few minutes first like someone else suggested.
     
  20. andyprius

    andyprius Senior Member

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    Sounds perfect to me.
     
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