Torsen is a trademark of the jtech corporation
The Torsen differential has many patented components and is the most unique and ingenious method of providing
differential action while overcoming the traction difference problem
The internal components of a Torsen are quite different from that of a conventional differential at
The heart of the system lies a specially shaped gear pair assembly
Let's see the cross-sectional shape of these gears at the mating point
As can be seen one gear is a spur gear and the other one is a worm gear a
Torsen works on the simple principle of worm gear worm wheel
That is a spinning worm gear can rotate the wheel
But the rotating wheel cannot spend the worm gear
Throughout this discussion just keep this principle in mind a
Pair of such worm wheels are fitted with the case
So the engine power received by the case is transferred to the worm wheels
Each end of the wheels is fitted with a spur gear
Now let's consider different driving scenarios
When the vehicle moves straight?
The worm wheels will push and turn the worm gears. So both the drive wheels will rotate at the same speed
Please note here that in this condition the worm wheels. Do not spin on its own access in
This condition the whole mechanism moves as a single solid unit
When the vehicle is negotiating a right turn the left wheel needs to rotate at a higher speed than the right wheel
This speed differential is perfectly supported in the Torsen
The worm gear of the faster left axle will make the corresponding worm wheel spin on its own axis
On the other side relative to the case the slow right axle is turning in the opposite direction
Thus the right worm wheel will spin in the opposite direction
The meshing spur gears at the ends of the worm wheel will make sure that the worm wheels are spinning at the same speed
Thus it guarantees a perfect differential action
Now let's try to understand how the torsion overcomes the drive wheel traction difference problem as you might be aware
when your vehicle encounters a
Situation as shown the slippery wheel starts to spin very rapidly and will draw the majority of the engines power
As a result the vehicle will get stuck
But if a Torsen differential is used in this case as soon as the slippery wheel starts to spin excessively
The speed change will be transferred to the worm wheel
The right worm wheel transfers the speed change to the left worm wheel since they are connected through spur gears
Here comes the tricky part
the left side worm wheel will not be able to turn the
corresponding worm gear because as we said a worm wheel cannot drive a worm gear as a
Result the whole mechanism gets locked and the left and right wheels turn together
This allows a large amount of torque to be transferred to the high traction wheel and the vehicle can thereby
overcome the traction difference problem
To carry the load to more worm wheel pairs are added
If
You are familiar with the other common technologies used to overcome the traction difference problem
You might have noticed a great advantage of the Torsen
While the other technologies allow the drive wheel to slip for a limited amount of time before it gets locked in
Torsen the locking action is instantaneous
That means as soon as the vehicle encounters a traction difference track, the wheels will get locked
To know more about the clutch pack LSD technology. Please check the next video. Thank you