Re: locking diffs? was: Boating with an S4

["Damon Cassell" <dcassell@bbnplanet.com>]

ah okay, well here's another question then..

you mention that it's all wheel drive, all of the time.  so, this is unlike
the AWD systems on a Honda CRV or a subaru, right?  i believe those systems
are primarily FWD but direct a certain percentage of power to the rear
wheels when necessary.  all four audi wheels are powered simultaneously even
on a flat, dry surface?

damon

> No.  The A4's quattro system is all wheel drive, all the time.
> It is the 4th generation Audi quattro system and there are no user
> controls for this system.   The car has a Torsen (torque-sensing)
> differential that will automatically vary the engine torque split
> between the front and the rear axles based on which axle has more
traction.
> There are open differentials in the front and rear, with "EDL" (electronic
> differential lock).  This uses the ABS system to automatically brake
> a spinning, non-tractive wheel so that torque is transferred to the
> opposite, tractive side.  This is all dynamic, adaptive and quick
> responding; the car does it all without the need for the driver to flip
> a switch or somesuch.
>
> -Ti
> 96 A4 2.8 quattro
> 84 5000S 2.1 turbo
> 80 4000 2.0
> --
>     ///  Ti Kan                Vorsprung durch Technik
>    ///   AMB Research Laboratories, Sunnyvale, CA. USA
>   ///    ti@amb.org
>  //////  http://metalab.unc.edu/tkan/
> ///
>
>