[torsen] Re: [V8] differential/torque sensing question
dbpulvino at hotmail.com
Wed Mar 19 16:10:35 EST 2003
I knew I'd get some clarity through this. As to "TORqueSENensing," I knew
that's what it did, just seemed that an explanation of function, along side
a visual picture of the internal workings of the torsen, would be easier
when a speed difference is the "input variable" so to speak. It's very hard
to imagine what a torque difference looks like, however the effect of a
torque difference is very easy to see...
Agree though, I do find these type of conversations to be interesting.
Kudos to the A4 driver who planted the seed once again.
Derek "should have been an engineer" Pulvino
>All correct, except the locking effect of the torsen is based on the Torque
>difference axle/axle (or wheel/wheel), not the speed difference like most
>viscous, clutch, or electronic systems. Just remember... TORqueSENsing...
>In a lot of cases , the torque difference is proportional to the speed
>difference. However, dynamically, the Torsen is often able to react (by
>increasing the bias ratio of the diff) to a difference in traction
>axle/axle (or wheel/wheel) *before* a difference in wheel speeds occurs.
>FWIW, I've had some experience lately in a '03 A4 3.0 Quattro Avant
>Tiptronic and it is definately Torsen.
>Keith Maddock, TRW Automotive, Koblenz, Germany
>Slip Control Systems, Systems Design, Traction Control
>+49 (0)261/ 895 2474 - - keith.maddock at trw.com
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