Limiting engine startup in cold weather

Discussion in 'Prime Main Forum (2017-2022)' started by sylvaing, Oct 30, 2023.

  1. Trollbait

    Trollbait It's a D&D thing

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    You aren't doing the engine any favors by not using it all the time.
     
  2. sylvaing

    sylvaing Senior Member

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    If I wanted to use the engine "all the time", I would have bought an Hybrid instead of a PHEV. You would expect Toyota designed the Prime so the engine is seldomly used. Beside, with temperature often below -10C here in dead of winter, the engine will see its fair use of the travels.
     
  3. bisco

    bisco cookie crumbler

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    it's hard to know what toyota is thinking most of the time. they are on the third gen phev, and with each, they have promised less engine on, but it really hasn't panned out
     
  4. Marine Ray

    Marine Ray Senior Member

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    So much so that they get a BEV after the PHEV, and then keep both :}
     

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  5. Trollbait

    Trollbait It's a D&D thing

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    No, not "all the time". I could have phrased it better. Just when it is reasonable to have the engine come on. Like in winter, or when flooring it. But many see the engine coming on as such a negative that they take extra steps to prevent it. Their vocalness about it is why the gen4 Prime/PHV literally has a different EV mode between North America and the rest of the world.

    If the engine is only coming on for holiday trips, that may not be enough to keep the engine properly maintained.
     
  6. Mendel Leisk

    Mendel Leisk Witness Leader

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    If you’ve got a daily commute, running as. Hybrid one day per week might be good.
     
  7. bisco

    bisco cookie crumbler

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    i can attest to the problem of not running the engine enough. at least on an 11 year old plug in with only 30k on the engine
     
  8. sylvaing

    sylvaing Senior Member

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    With the temperature being often below -10°C in the following months, the engine will see its fair use.

    However, checking with Hybrid Assistant, in Ready mode with Climate set to High, fan to the Max and Eco Off at 1°C, the car draws only 2 kWh. Connected to a 240V/16A (3.8 kWh) charger, I fail to see why the battery needs to be solicited to warm up the car in Climate Prep.
     
  9. bisco

    bisco cookie crumbler

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    Poor software programming
     
  10. Trollbait

    Trollbait It's a D&D thing

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    It shouldn't on Level 2, but many people with a PHEV just use Level 1. When first released, the Volt didn't allow grid climate prep when using Level 1.

    A note on comparing to the Tesla, it might have resistant heaters that heat up almost immediately that the Prius doesn't.
     
  11. sylvaing

    sylvaing Senior Member

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    No, it doesn't have resistant heaters since 2021. When the heatpump isn't enough, it uses many components in a 'lossy' manner. When operated on such a way, the CoP is 1, just like a resistant heat but without the added weight of more components. See this:

     
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  12. Louis19

    Louis19 Active Member

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    By the way , do you have a AWD TESLA, since the motors works in a lossy manner , heating with a AWD provides more heat than a single motor.
     
  13. sylvaing

    sylvaing Senior Member

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    No, RWD, although I have no problem driving with my coat on the back seat at -30°C.
     
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  14. Trollbait

    Trollbait It's a D&D thing

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    Would it be fair to say that using drive train components inefficiently for cabin heat is like a PHEV using the engine?
     
  15. sylvaing

    sylvaing Senior Member

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    Without emissions though.
     
  16. Louis19

    Louis19 Active Member

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    How does RWD behave in our winter with snow tires
     
  17. sylvaing

    sylvaing Senior Member

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    I've put Michelin X-Ice tires on and never had stability issues, even on badly maintained regional roads like this

     
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  18. Louis19

    Louis19 Active Member

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    Thanks, by the way how does the ride compare to the Prime versus the Tesla M3
     
  19. sylvaing

    sylvaing Senior Member

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    The Prime ride is much softer (and therefore comfortable) than the Model 3 but the driving fun isn't the same.
     
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  20. Louis19

    Louis19 Active Member

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    Thanks again:) personnaly I prefer softer ride . ..I appreciate your opinion