torsen (English, Русский)

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torsen automatically locking differential

The original Torsen T-1 (Type A) uses crossed axis helical gears to increase internal friction. The Type I can be designed for higher torque bias ratios than the Type II, but typically has higher backlash and the potential for Noise, Vibration, and Harshness (NVH) issues, and requires a precise setup/installation.

The later Torsen T-2 (Type B) uses a parallel gear arrangement to achieve a similar effect. There is also a specialist application of the T-2, known as the T-2R (RaceMaster).

The latest Torsen T-3 (Type C) is a planetary type differential, in that the nominal torque split is not 50:50. The Type C is available as single or twin version; the Torsen twin C differential has front and center differential in the same unit.

(Source: Wikipedia)

Figure: Torsen type II automatically locking differential
torsen-type-2

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Figure: Audi's Torsen type 1 center differential
torsen-type-1-audi-80-90-100-200-a4-a6-s4-s6

Figure: Torsen type II (left) and Torsen type I
torsen-photo

Figure: Torsen type III planetary gear differential
torsen-type-3

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Figure: How does Torsen differential work. Operating principle.
torsen-differential-operating-principle

Have you seen a better description of Torsen Automatically Locking Differential on the web? Please send us the link to or post it in a comment below!

Read more

http://en.wikipedia.org/wiki/Torsen

An introduction to the function of Gleason's TORSEN differential including discussions of its major characteristics, design flexibilities, and effects on vehicle performance - pdf, 443KB

Torsen Type I

Torsen Type II

Torsen Type III

Torsen U.S. application chart

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There are 5 comments
Joe Muse
February 11, 2024 - 03:11

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Tostik
June 24, 2013 - 02:41

Quote from above:

"The main disadvantage of the Torsen differential is when no torque is sensed on one of the axles, the differential does not lock. Torsen differential is not capable of transferring 100% of torque to one of the axles. In real life this means that when a single axle loses grip completely (very low traction on ice, or if wheels raised in the air) the car is not able to move."

But the recent Audis have an ABS braking traction control when one wheel loses all traction, and it also brakes when two wheels on one axle lose all traction. So Audis have the best of both worlds, with the braking traction control system doing away with the disadvantages of Torsen.

Daniels118
August 28, 2012 - 10:47

To see a Torsen Twin C made of Lego:
www.youtube.com

allrad
December 08, 2009 - 20:06
brilliant video - must watch!!!

anyone watching this video have to understand function of Torsen diff!!! ---> www.youtube.com

Reply to allrad
George
December 28, 2009 - 01:13
Re: brilliant video - must watch!!!

Better video of torque sensitive differential.
www.youtube.com

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