Vortex Generators

Discussion in 'Gen 4 Prius Technical Discussion' started by dstahre, Jun 14, 2016.

  1. krmcg

    krmcg Lowered Blizzard Pearl Beauty

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    And I had a 5% improvement on my best tank ever! Maybe vortex generators, maybe warmer weather? I'd like to think that both had a positive effect.
     
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  2. Coast Cruiser

    Coast Cruiser Senior Member

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    image.jpg image.jpg

    May the "Vortex" be with you...
     
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  3. Coast Cruiser

    Coast Cruiser Senior Member

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    Kevin, instead of a license plate, maybe you should've gotten an aircraft "N" number? :)
     
  4. Vman455

    Vman455 Senior Member

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    If you do some tuft-testing, you'll find that airflow over the back window is already attached, without drag-inducing vortex generators.

    Here is the series of Autospeed articles on vortex generators (someone referenced Part 4 earlier):

    Part 1
    Part 2
    Part 3
    Part 4
     
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  5. pakitt

    pakitt Senior Member

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  6. MrMischief

    MrMischief Active Member

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    I think this is starting to change, as MPG requirements continue to increase it's just matter of time before the side mirrors go away. The CT6 has an electric rear view "mirror", although I believe it can be either a display or mirror depending on a button push.

    somewhat related thing, Colorado does not require side view mirrors. The law says one mirror with a clear view X many feet back. The rear view fills this requirement. A judge agreed with me when driving the Jeep without the doors and side mirrors.
     
  7. GregersonIT

    GregersonIT Member

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    I did something similar myself specifically for cross winds, but I certainly benefited in the gas mileage department. I consistently drive 80-85 for a large part of my commute and while the average pace of the whole commute is about 65-75 I normally average around 60mpg which is better than what I got before I added these two very cheap devices.
     

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  8. CooCooCaChoo

    CooCooCaChoo Active Member

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    ^^^ Are those on backwards? Cause it looks that way to me ...
     
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  9. alanclarkeau

    alanclarkeau Senior Member

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    I seriously doubt that TOYOTA's design engineers didn't fiddle with everything possible to achieve exceptional CD.

    Prius_WindTunnel_BE5A4061D399929068301EAC6012A0F6ABA2B75D.jpg Prius Gen II vs III drag with II ant circ.jpg

    upload_2022-6-23_17-16-50.png

    upload_2022-6-23_17-17-16.png

    upload_2022-6-23_17-17-44.png

    upload_2022-6-23_17-18-33.png


    upload_2022-6-23_17-19-21.png
     
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  10. PaulDM

    PaulDM Active Member

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    Surprised these were on the 2022 as they were not present on the 2019 E60A4770-9427-459A-9486-AEEED6CA33A0.jpeg
     
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  11. GregersonIT

    GregersonIT Member

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    Yep, that was by design inspired by the TRD roof Garnish and a few others who purchased it noticing a huge drop in cross wind effects. My 10 dollar modification was a night and day difference in cross wind effects. The gas mileage effect was unintended, but highly welcomed especially allowing me the same or better gas mileage while going 15mph faster on the interstate and it's been through 2 years of automatic car washes at this point and it's still there.
     
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  12. alanclarkeau

    alanclarkeau Senior Member

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    No, not on my 2016 either.

    I've got these:

    upload_2022-6-24_14-45-31.png upload_2022-6-24_14-45-48.png
     
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  13. GregersonIT

    GregersonIT Member

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    I agreed, I'm curiously thinking some sort of modification at the top of the windshield in a 3d printed piece to bring the wind up from the windshield over the lip to the roof would possibly be beneficial in bringing that air a little more smoothly across the top of the car so it can breakup down over the window a little better with 60 degree breaks. I see the generators as breaking it up into smaller vortexes that reduce the drag on the back, and you can see it on the back window of the hatch in the rain a bit and less overall dust buildup.
     
  14. Doug McC

    Doug McC Member

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    I hate (not really, I actually enjoy it some times) admitting my ignorance, but I saw them and thought “that’s cool”! . I suppose to some on this site that it might be a little shocking that Toyota engineers could actually successfully do something like that!!!!!! ;) AND THEN to think they ACTUALLY continue to improve the design!!! ;))
     
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