4matic vs quattro

[auditodd at attbi.com]

Why couldn't the center diff be just a "normal" open differential?

Wouldn't really have to be a VC or Torsen. By using the EDL to control all four
corners, you could use just an open diff in the center. An open diff would be
able to compensate for differences in speed between front and rear, and yet if
both rear brakes are minutely engaged, it would send more power to the front axle.

I bring up the point because the MB Glendenwagen uses open diffs (with some sort
of locking mechanism) in all three positions, then you can "lock up" whichever
one or more you need to get unstuck.
> At 12:53 10-1-03 -0800, Joseph Pizzimenti wrote:
> >So does it run off of a center torque sensing
> >differential and use EDL front and rear?  Or is it a
> >VC system?
>
> Ad text was kinda unclear on that, but I believe it to be the latter.
>
> Tom
>