Actually, Hans, Tiptronic is the regular Audi automatic transmission with
manual shift feature. Their version of the
DSG was called S-Tronic. Not sure if it still is, or if they just call it DSG
now as well. But Tiptronic isn't it....
Dan D
Central NJ USA
'76 MGB Tourer
'65 MGB Tourer (Project)
NAMGBR #5-2328
http://dans65b.blogspot.com/
http://dans76b.blogspot.com/
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twitter: dandibiase
________________________________
From: Hans Duinhoven <h.duinhoven@planet.nl>
To: ccrobins@ktc.com; Paul Hunt <paul.hunt1@blueyonder.co.uk>
Cc: mgs@Autox.Team.Net
Sent: Sun, January 31, 2010 2:24:05 PM
Subject: Re: [Mgs] wanted - now DSG 7 speed
I never studied the DSG principles, but
http://en.wikipedia.org/wiki/Direct-Shift_Gearbox gives a nice explanation. BTW
Audi calls this gearbox Tip-Tronic
Cheers,
Hans
----- Original Message ----- From: "Charley & Peggy Robinson" <ccrobins@ktc.com>
To: "Paul Hunt" <paul.hunt1@blueyonder.co.uk>
Cc: "Hans Duinhoven" <h.duinhoven@planet.nl>; <mgs@Autox.Team.Net>
Sent: Saturday, January 30, 2010 10:28 PM
Subject: Re: [Mgs] wanted - now DSG 7 speed
> The Prius will sort of freewheel with the engine shut down at speed below ~40
>mph. It's called "gliding" by those who know how to extract this behavior
>from the car. It isn't really freewheeling, it's a matter of MG1 spinning at
>a speed that allows the engine to cease rotation - possible in a 3-way
>planetary gearset.
>
> Have you read up on how the DSG gearbox(s) work?
>
> CR
>
> On 1/30/2010 10:31 AM, Paul Hunt wrote:
>> Interesting if the designers have decided to freewheel and keep the engine
>ticking over rather than keep the momentum of the car spinning the engine and
>shut off the fuel completely, it implies the former is more economical. Mind
>you if you have stop/start then it could do both i.e. use no fuel *and* have
>minimum drag. The computer restarting the engine and matching revs to road
>speed as well as engaging the appropriate gear and clutch.
>>
>> PaulH.
>>
>> ----- Original Message -----
>>> ... This gearbox gets into a "free" coasting state whenever the speed is
>over 20 Km/h or higher and the throttle pedal is fully released.
>>> But whenever I apply the brakepedal, the DG box immediately engages the
>right gearnumber for the current speed.
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