Manufacturers are using a wide range of LSD designs other
than the typical clutch type. These designs were born out
of the need to improve vehicle stability and tire traction
Many are gear-based and are often called
torque-sensing (Torsen) units. The basis of these units is a
parallel-axis helical gearset (Figure 38-31 ) . The Torsen
differential multiplies the torque available from the wheel that is starting to spin or lose traction and sends it to the slower
turning wheel with the better traction. This action is initiated by the resistance between the sets of gears in mesh