Torsen Differential, How it works ?

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