German Car Zone

Volkswagen shifts Golf into high gear with 7-speed DSG


Modern automotive technology is getting so advanced, and the timeline for development so short that an item exclusive to the sacred province of the upper echelon of motorsport a few years ago can be found in economical hatchbacks today - quite literally. Volkswagen’s seven-speed Direct Shift Gearbox (DSG) transmission is just such a technology. Offering the best of both manual and automatic standard transmissions, the DSG dual-clutch transmission is now available in the VW Golf and Golf Plus with seven speeds.

For those not intimately familiar with VW’s DSG technology, the basic concept is relatively simple to grasp. Imagine a manual transmission, but instead of one gearset there are two - one for the even gears, another for the odds - and each has its own clutch. That clutch is computer controlled, as is the gear selection, so that while you are in second gear and accelerating, the computer has preselected third on the other gear shaft and only has to disengage the clutch from the active shaft and engage the clutch on the inactive shaft to change gears, allowing a seamless transmission of power between gears. It works in reverse for downshifts, with the computer handling the rev-matching as well. In the modern DSG, the two gear shafts are not side-by-side, but concentric, one outside the other. This allows for smaller packaging. If that doesn’t help much, check out this video of the DSG in action.
The newest seven-speed gearbox (pictured below) going into the Golf and Golf Plus has two new features as well. In addition to being the first front-transverse installed seven-speed DSG, it is also the first to run dry clutches rather than immersing the clutches in oil. By running a dry system the newest DSG achieves even greater efficiency and can handle more torque - up to 250Nm (185ft-lb). The increased efficiency results in 0.7L/100km better fuel efficiency than its predecessor, the six-speed DSG (pictured above) when paired with the 1.9L diesel motor. To help drivers get a start in hilly areas, all DSG-equipped Golf variants also come standard with hill-start assist, which holds the brake temporarily while the driver switches to the accelerator to prevent the vehicle rolling back as it would with a manual.
Initially the unit will be available on Golf and Golf Plus models with either the 90kW (120hp) 1.4L TSI petrol motor or the 77kW (103hp) 1.9L TDI motor. The optional installation of the new gearbox will start at €1,750.

How DSG (S tronic) works

http://germancarblog.vodpod.com/video/659709-audi-how-dsg-s-tronic-works?c=sort.latest

Nice, but it is time to see this in a high powered VW or Audi now! I'd love to see a R36 Jetta or Golf/Rabbit with the 280hp V6 hooked to this gearbox.

M

Doesn't the Veyron use a version of this already?

The Veyron does have a DSG gearbox, but it is design specifically for that car only, which has 4WD and longitudinal engine placement, plus this gearbox is built to handle the monster torque from the engine. I am sure VW/Audi engineers can copy elements of this gearbox design and incorporate them into their new gearbox in the future, especially for Audi. The E-gear gearbox for the R8 is mostly from the Gallardo and it is no way as impressive as the F1 gearbox from Ferrari.

Monster is right. The Veyron's DSG-transmission was engineered by Ricardo while the other DSGs used in Volkswagen Group cars are from BorgWarner.

Right I want to see them on Passats and more importantly Audi S and RS models.

M