This design prevents the complete loss of drive
that occurs with a conventional “open” differential
when one wheel slips.
OPERATION
The Quaife Automatic Torque Biasing Differential
is a Limited-Slip design that behaves like an open
differential during normal driving situations. During
aggressive driving maneuvers (straight-line hard
acceleration, hard cornering) it senses which wheel
has better grip, and biases power to that wheel
smoothly and consistently, without removing power
from the other wheel.
In the event of wheel slip, torque bias is generated
by the axial and radial thrusts of the pinions in the
pockets. The resultant friction force enables the driv-
ing road wheel and sun gear to transmit a greater
proportion of the torque. This is a progressive action,
yet at no stage will the differential ever lock.
This differential also controls loss off traction when
the drive wheels are on slippery surfaces such as ice,
snow, or mud, providing the appropriate biased trac-
tion needed to overcome these adverse conditions.
Fig. 96 Quaife ATB Differential
1 - GEAR BODY (FLANGED SIDE)
2 - BOLT (11)
3 - SUN GEAR (2)
4 - PLANET PINION (12)
5 - CENTER PACK
6 - GEAR BODY (SMALL SIDE)
21 - 92
T850 MANUAL TRANSAXLE
PL/SRT-4
DIFFERENTIAL (Continued)