1 Torsen differential
Introduction:
Torsen differential (Torsen) also known as self-locking Torsen differential, which is the core technology Quattro all-wheel-drive system. The origin
Torsen name taken Torque-sensing Tractionmdash; mdash; feel traction torque, even brand names are from the traction control can be accomplished, the more professional of this system. The core is the Torsen worm, a worm gear system, from a structural view of the Torsen differential can see the double worm, the worm structure, it is their mutual engagement and a torque interlock unidirectionally transmitted from the worm wheel to the worm gear configured to achieve the differential locking function, this feature limits the slide. During normal driving in a curve, the role of the former, the rear differential is a conventional differential, a worm gear does not affect the output speed of the axle different, such as when the vehicle turn to the left and right wheel differential speed ratio, and left low speed, different speeds of the left and right can be closely match the synchronization worm gear. At this time, the worm and not locked, since the torque from the worm to the worm gear. When one side of the wheel slip, the worm components play a role, through a Torsen differential or hydraulic multi-plate clutch, very quickly and automatically adjusting power distribution.
Characteristics:
Torsen differential drive 4 is constant, traction is allocated to each wheel, so there is a good curve, a straight line ( wet / dry) drivability. Self-locking Torsen center differential to ensure a uniform power distribution front and rear wheels. Any different speeds, such as when the front wheels encounter ice, the system will respond quickly, the steering torque is 75 percent slower speed of the wheel, i.e. where the rear wheel. When
Torsen differential to achieve a constant, continuous torque control and management, which continue to work, there is no time delay, without intervention to adjust the total torque output of the torque does not existLoss, compared with the traction control and vehicle stability control system is more advantageous. Because there is no tradition of the multi-plate clutch is equipped with self-locking differential, there is also no wear and maintenance free. Purely mechanical LSD has a good reliability.
Torsen differential transmission can be implemented with any match, splitter, other vehicle safety control system with ABS, TCS (Traction Control Systems, traction control), SCS (Stability Control Systems, vehicle stability control) compatible. Torsen differential is purely mechanical structure, the wheel slip just a momentary action occurs, the lock having a linear characteristic, the real four-wheel drive is constant, the torque distribution before and during normal driving is usually 50:50. The disadvantage is that it’s very expensive.