1
What is?
to (Torsen) Torsen center differential as the core technology research and development of full-time four-wheel drive technology, in 1980 at the Geneva Motor Show launch, now has become a rapid response, stable and reliable four-wheel drive represents the technology.
2
You know what?
Quattro is Italian “four” means, for the Audi Quattro there are other meanings. In 1980 the company developed the Audi Quattro four boot the system, and it is equipped in a two-door sedan based on the chassis of the Audi 80, the car’s name is also called Quattro. In addition, Audi subsequently set up a subsidiary company called Quattro, specializing in testing and development of high performance models.
relying Torsen differential structural properties, before and after the power shaft 50:50 evenly in straight running, in the differential planet gear case itself is not rotation. When the car accelerates, the rear grip becomes due, Torsen differential automatically allocate more power to the rear wheels to get more efficient force.
3
Error:
· quattro all-wheel drive system is not a four-wheel drive system is purely mechanical.
· The system does not guarantee total loss of power will grip the wheel 100 is transmitted at three percent to not lose grip on the wheel.
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Advantages:
* having excellent reliability.
by a higher-resistance, active safety and speed of response.
5
Disadvantages:
Weight heavier.
* higher costs.
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Principle:
Torsen differential is a planetary worm gear arrangement it works by purely mechanical, electronic systems without any intervention. The basic principle is to use the Torsen differential worm unidirectional drive characteristics, both motion transmitted from the worm to the worm wheel only, the reverse self-locking occurs, and therefore more timely and reliable than the center differential to the hydraulic control system of the electronic torque distribution before and after adjustment, the power can be smoothly assigned to front and rear output shafts through the planetary gear, thereby driving the front and rear axle. Dynamic characteristics of the worm gear transmission is just the opposite, it automatically with the power distributing planetary gears ordinary open differential to the output shaft side by a large resistance.
quattro four-wheel drive is not a purely mechanical system, engineers in Torsen differential on the basis of the installation of the EDL, EDL stands for Electronic Differential Lock, Chinese called “electronic limited slip differential lock.” The device will monitor the rotational speed of the four wheels, when a loss of the wheel and the idler grip, the EDL will by the slipping wheel ABS braking force is applied alone, so that the torque is transmitted to the other side by an open differential non-slip wheels.