CVT Transmission

Discussion in 'Ideas and Suggestions' started by TechdemoFTW, Mar 24, 2016.

?

Would you want a CVT?

  1. Yes

    76.5%
  2. No

    17.6%
  3. What is a CVT? go to https://en.wikipedia.org/wiki/Continuously_variable_transmission

    5.9%
  1. TechdemoFTW

    TechdemoFTW
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    I think the devs should add a CVT (Continuous Variable Transmission) to some cars that might have it. I know that the current system can only have gears,

    ----------Looks like this----------------------
    // -1, 0 (neutral), 1, etc
    "gears":[-2.9, 0, 2.72, 1.55, 1.05, 0.87]

    but maybe make it look like this to act more like a CVT

    ----------Cvt Looks like this----------------------
    // -1, 0 (neutral), 1, etc
    "gears":[-0.10, 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.10, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.20, etc]

    It might seem like a lot to do, but I'm sure you guys can make a program to do it automatically
     
  2. clayton8or

    clayton8or
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    CVT exists in the sunburst already and it is done with lua.
    A prototype before the lua did have over 300 gears though :p

    Also gear ratios would be the opposite of what you imposed because the lower the number the longer the ratio.
     
  3. TechdemoFTW

    TechdemoFTW
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    Yeah I just realized that, but i was thinking maybe more vehicles with that
     
  4. Jurrunio

    Jurrunio
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    What exactly are the other cars you are talking about? None of the existing cars make sense with a CVT other than the Sunburst (either the production time doesnt fit, or it doesnt fit the cars layout/performance).
     
  5. coolbill14_ 2

    coolbill14_ 2
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    yeah what cars do you mean??
     
  6. blaken2015

    blaken2015
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    I know of a predecessor to the modern CVT, known as the Chevrolet Turboglide.

    The interesting thing about the Turboglide however, is instead of a belt, split-power transaxle (Hybrid vehicles), or a toroidal mechanism of ratio changing, it used a series of turbines and stators to manipulate a hydraulic current, like the Buick Dynaflow.

    The Turboglide was an automatic transmission from GM that was available from the late 50s to the mid 60s, but it fell out of favor by the more popular, practical, and conventional 3-speed automatic that was commonplace with vehicles of the 60s-late 70s.
     
  7. SixSixSevenSeven

    SixSixSevenSeven
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    Turboglide was not a cvt and did have 3 fixed speeds.
     
  8. Zappymouse

    Zappymouse
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    Pretty sure Turboglide drove *like* a CVT, but that was achieved through a really clever torque converter.
     
  9. SixSixSevenSeven

    SixSixSevenSeven
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    3 rotors and a funky ass swash plate. Drove alot like one, technically is not one. Though true CVTs did exist as early as 1910 in motorcycles and a few cars in the 20s had them, though none was sold in the states until 87 when the subaru justy was available.
     
  10. Spaceballs the Username

    Spaceballs the Username
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    The only other car I can currently see having a CVT is the ETK 800 on a comfort model or something. Even then, I'm pretty sure those little German CUVs (hatches?) didn't have CVTs.
     
  11. skodakenner

    skodakenner
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    pretty much non of the german car makers have a CVT exept audi did have one on the A4 but it wasn´t that good
     
  12. TechdemoFTW

    TechdemoFTW
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    Also the A5 & A6
     
  13. skodakenner

    skodakenner
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    really I only know the A4s one because of Auto Bild where the CVT alias Multitronic broke down 5 times if I remember right
     
  14. TechdemoFTW

    TechdemoFTW
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  15. blaken2015

    blaken2015
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    1 & 3) Even then, the three fixed speeds were technically a series of six 'fixed' speeds since the torque converter assembly was connected to a two-gear planetary gearset that gave the final gear reduction before the differential assembly.

    2) Correct, the turbines were manipulated by two variable pitch stators like the Buick Dynaflow, the difference is that there were more turbines than stators, giving less of an opportunity for hydraulic turbulence to cause a dramatic loss in hydraulic current/flow.
     
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