"Floyd Rogers" <fbloogyuds@[EMAIL PROTECTED]
> wrote in message
news:13um513ovq5jraa@[EMAIL PROTECTED]
> "Dan Stephenson" <stephedanospam@[EMAIL PROTECTED]
> wrote
>>I have heard the new models are going to have DSG transmissions. From
>>what little I admittedly know, that weirds me out. It's just then just
>>like an automatic where you manually change the gears? With no taking
it
>>out of gear when you want to? Would someone out there pls expound a
>>little more on this topic. The most positive I hear about it, is that
is
>>save 10% fuel costs. Like that's why I would get a new Porsche.
>
> It would be more fuel-efficient than a Tiptronic auto; they're not
> comparing
> it to a "traditional" manual transmission.
>
> I believe that DSG stands for Dual-clutch Sequential Gearbox.
> It's similar in operation to current Sequential Manual Gearboxes,
> but since it uses two clutches, the shifts are very much smoother.
> I believe that one clutch is used for odd-numbered gears, and
> another for even-numbered gears.
>
> Audi has had one for 2-3 years. BMW is working on one,
> probably other manufacturers.
>
> FloydR
>
As far as I know, this type of transmission originated at Porsche in the
'60s or '70s when they were looking for a fast-shifting race car gearbox.
Porsche prefers to call it the "Porsche Doppel-Kuppling [PDK]" meaning
Porsche Double Clutch. At least that's the best result from my limited
German skills.
There was an account of a press conference a couple years ago. A
"typically
well-informed" journalist asked a senior Porsche engineer if Porsche was
considering the "AUDI dual-clutch" transmission. That question went over
well.
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