• Jul 17, 2008


Click above to watch Porsche's PDK gear box in action

Porsche's unveiling of the 2009 911 Carrera also came with the introduction of the new PDK seven-speed twin-clutch gearbox. It can shift 60-percent faster than the Tiptronic system, and reportedly helps the 911 S lap the Nurburgring eight seconds faster than the six-speed variant. Porsche has released a video explaining more about how the PDK works, showing off the dual wet clutches that are simultaneously connected to two gears so that when gear is engaged the next gear has been selected, essentially providing instantaneous shifts. Follow the jump to watch the PDK gear box in action and learn more about how the dual clutch system works.

[Source: Autoblog.it]



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  • 32 Comments
      • 6 Years Ago
      I always thought Doppelkupplung was a tough one to pronounce, but i assumed that was because i'm a slack jaw from the states who learned Spanish in school. Then i head the narrator on the video mush-mouth through it and it made me feel better.
        • 6 Years Ago
        The narrator pronounced it correctly.
      • 6 Years Ago
      It feels like that guy's voice could successfully be used to sell you car insurance while you were having teeth drilled.
        • 6 Years Ago
        "It feels like that guy's voice could successfully be used to sell you car insurance while you were having teeth drilled. "

        No no , that's the elf guy from the Matrix, "it will be hard to shift when you have no clutch Mr. Anderson".....
        • 6 Years Ago
        That Euro production values for ya!
      • 6 Years Ago
      This transmission technology is fantastic! VW has been using it for a while now, and has worked most of the bugs out of it. I absolutely love driving a GTI with the DSG, I can only imagine how good it will feel in a Cayman!

      Does anyone know when this is coming for the Cayman?
        • 6 Years Ago
        Uh its not just VW that's been using this technology, and you cannot compare DSG to this, besides the fact that they don't have a shifter and they both have a two clutches. It's been around for a while, F1 racing, and then into Ferrari's
        • 6 Years Ago
        I don't think F1 cars have dsg... Or any ferrari for that mater, at least th production ones. They have the single clutch plate automated transmission. And VW was kind of the first to introduce one in an everyday car (the golf) and VW group has sold more of them than anybody else.
      • 6 Years Ago
      If it selects the next gear while engaging the current gear what happens when you downshift?
        • 6 Years Ago
        Very cool. Thanks for the reply guys.
        • 6 Years Ago
        It's magic, it knows always what you going to do next even if you don't know yourself...
        • 6 Years Ago
        Same thing, just the next lower gear rather than the next higher. One clutch does the odd gears, the other does the evens. The computer pre-selects the "next" gear based on if you're accelerating or decelerating. It's pretty clever.
      • 6 Years Ago
      Am I the only one bothered by the fact that they put the extra complexity and weight of the 7th gear just for ECONOMY, while your maximum speed is achieved in the 6th gear (according to the VO)
        • 6 Years Ago
        But the stick version Gus, because 66 lbs is just too much weight in a 3100+lb car.

        No the car is drag limited.

        http://www.porsche.com/microsite/911/usa.aspx
        • 6 Years Ago
        A highly over-driven gear will have mechanical dis-advantage. More input required for less output. But it does have the advantage of slowing the engine down at cruising speed.

        With such disadvantage, it is bleeding power into the gearing, rather than using it for propulsion.

        If 6th gear in this transmission is close to 1:1 (direct drive), then the top speed is limited either by power, or drag, not by gearing.

        In 7th gear, gearing limits the top speed. HOWEVER, the point of an economy gear is that the engine can run slower at a constant modest speed, not outright highest speed. That is better for Noise, vibration, and harshness, and fuel economy at cruising speed.

        Even Porsche owners don't want to be driving on the highway with the engine high in the rev range just to flow with traffic.
      • 6 Years Ago
      I don't like how some cars (all?) paddles turn with the wheel. The paddles should stay stationary as the wheel turns. If you want to shift while turning and you start going lock to lock...how are you going to find the paddle that you want, or even find the paddle at all?
        • 6 Years Ago
        That's funny. I've wondered why paddle shifters are stationary instead turning with the wheel. I know the paddle shifters in Ferrari's, Lamborghini's, and others don't turn with the wheel. I always assumed it was because they didn't want you to shift while turning.
      • 6 Years Ago
      stuipid buttons - 2 years there will be paddle behind the wheel, if not 1 year for the GT2/3 models

      Porsche is, if nothing else, a dedicated follower of fashion

      I think I might even avoid the purchase because of the steering wheel, knowing that Porsche would have to fix it eventually and deciding to wait for the inevitable replacement.

      I've always thought that the perfect modern Porsche would be a Carrera S with a DCT set up, racy for the track, breeze around LA kind of car. But I'd want paddles, not buttons designed by the Covenant.
      • 6 Years Ago
      Why is Porsche sticking to their guns on the buttons vs paddles? The most annoying thing about tiptronics (other than being slushboxes) are the buttons for changing gears instead of paddles. Are paddles at least going to be an option?
        • 6 Years Ago
        In that video, in the cutaway view, what is that rectangular grated thing at the front right of the car? a heat exchanger?
        • 6 Years Ago
        http://www.autocar.co.uk/VideosWallpapers/Videos.aspx?AR=233451&CT=V

        Me too. Autocar wishes there were paddles also.
        • 6 Years Ago
        No kidding, what's up with those oh-so-dainty girlie push buttons on the steering wheel?! Don't want to break a finger nail now, don't we. The perfect car for Paris Hilton and Britney Spears.

        Paddles, man, that's what a real performance car would have with a double-clutch.

        Porsche - the car (and SUV) for every woman.
      • 6 Years Ago
      I don't think the buttons are "girlie" I think it's more the idea of luxury and smoothness.

      What it appears that Porsche is leaning towards is what Richard Hammond said. (Not talking about Porsche though)

      It's like a finely crafted watch and when you hit one tiny button, all the volcanoes in the world erupt.

      Unless you go all out on a GT3 RS or something, you're buying a luxury car with some sporty qualities. Not a sporty car with some luxuries.

      Think the opposite of Lotus' philosophy.

      I hope I didn't spew complete garbage, just IMO.
      • 6 Years Ago
      "Available for the very first time for the Porsche 911 is the Double@#$@%%!"


      LOL
        • 6 Years Ago
        or

        "Dubtepkupkup"

        "Aflac!"
      • 6 Years Ago
      The Cayman will have this too, not just the 911. But, in typical arrogant Porsche AG fashion, they're going to delay introducing it in the Cayman in order to protect the frail, fragile, weak, aging, obsolete, feeble 911, because the 911 needs all the protection it can get or it'll die. Who wants a car like that? (That's what known as a "rhetorical question", in case some dense reader out there feels the urge to reply.)
        • 6 Years Ago
        I own a 2006 C4S and it's the best car I've ever owned. What car do you own?
        • 6 Years Ago
        They make between $25-30 grand in profit on every one they sell. That would be every damned one they can make by the way.
        The 911 is the pre-eminent model at Porsche. Therefore, it will get the new tech first. Then, after a proper amount of time, they will defuse the tech through out the line. Nothing new there and damned good business sense IMO.
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