Differential

[1] The temperature or pressure difference between cut-in and cut-out temperature or pressure of a control.
[2] A unit that takes the power of the rotating driveshaft at right angles to the rear axle and passes it to the axle. It will not only drive both rear axles at the same time, but will also allow them to turn at different speeds when negotiating turns. In this way the tires do not scuff or skid.
See also automatic slip-control differential, axle differential, bevel differential, center differential, front differential, helical differential, inter-axle differential, limited-slip differential, limited slip differential, lockable differential, locking differential, lockup differential, multiple-disc limited-slip differential, no-spin differential, open differential, planetary gear differential, pressure differential switch, rear axle differential, rear differential, spur differential, torque sensitive limited slip differential, torsen differential, traction differential, variable limited-slip axle/center differential, visco-differential