[V8] front diff( EDL or just plain open?0
Keith Maddock
keith.maddock at gmail.com
Mon Dec 27 14:13:42 EST 2004
QSHIPQ at aol.com <QSHIPQ at aol.com> wrote:
> Well Keith, I'm all for calling a v8 EDL, cuz it's more so than the now atypical
> ascription of EDL. In a v8, it's an open diff until slip occurs, then it activates
> the "electronic differential lock". An open diff becoming a locked diff via
> electronic activation. Certainly purists would agree that's exactly the
> definition of EDL.
True purists could also aruge that it would/could be ELD :-P
> As audi has it's own nomenclature for it's quattro systems, it's no surprise
> that EDL has taken on a new meaning. In fact, abs based traction control
> isn't a electronic locking differential in any manner whatsoever, it's just
> using heat (braking) to absorb torque on the slipping side of an open differential,
> so that the other drive axle (T1 + T2 - on audis either front or rear, but not
> over center axle) can support more torque. That's not locking anything,
> since the differential is still open by definition. I'm sure even Keith M
> would agree with torsen boy on this point.
Torsen-boy - Agreed 99.999%! "AudiEDL" is definately not locking
anything at all. I just wanted to make sure that there wasn't an
impression that the V8 Auto center diff was using ABS based Traction
Control (in my world aka BTC - Brake Traction Control ). If
EDL(BTC) is ever locking anything, that means it would have applied
full brake to both wheels, which means that myself, a colleague, or a
counterpart made a mistake in their code :)
The 0.001% : WRT AudiEDL(BTC) "on audis either front or rear, but not
over center axle" - would go to 0.000% if you changed audis to
"production audis" :-P BTDT.
Cheers,
Keith
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