Chassis contrast of old and new Audi A6L GM Tech2

A bottom view from the front of the chassis between the GM Tech2  generations Vchicles comparison chart, you can see that both the existing differences, the most obvious is the composition of the lower control arm, tie rod by the steering of the machine down, also involved in the suspension lower complete their work on the control, this arrangement also helps to enhance the stability of the wheel. In the upper control arm part, the biggest change is on the control arm bracket directly integrated in the die-casting on the top of the tower, and the old models A6L out a separate bracket. Light weight, number of parts, and compact structure extent, no doubt, the new model is dominant. And the new A6L use die-cast aluminum top of the tower is lightweight purpose of the steel parts of the older models meet the strength requirements.

 Change the hydraulic steering system from the original mechanical drive to the motor drive, As for its benefits will not introduce more, most worth mentioning here is turning the machine on the installation location, in the previous models, Steering arranged in the top of the gearbox, or rather should be inside the firewall, steering rod is pulled moving wheel bearing (commonly known as: croissants) top to achieve the rotation of the wheel. The seventh generation of Audi A6L will shift down, based on the changes in the Gm tech2 scan tool   position of the steering machine installation, the entire front suspension to be moved forward, which is obviously taking into account the vehicle's handling performance. In this regard, A6 but walk in front of A8 "dragged" by W12 engine top A8 models equipped with a W12 engine is still used with the the mechanical hydraulic power steering system with steering function, no installation location changes. Auto show in Beijing, we also issue an interview with the German engineer in charge of the business, he said, in the future, the electronic penetration will become increasingly high.
Dynamic steering system is also fitted on top with models of the Audi A6L, motorists will be able to adjust the sensitivity of the steering wheel through the MMI system to obtain or exercise or comfortable driving experience, of course, there will naturally include electronic booster pump to the steering wheel to provide feedback efforts. Audi dynamic steering system structure with BMW and Toyota's system is essentially different from its core components are the core of the electronic control system of a harmonic gear drive mechanism. The so-called "harmonic gear flexspline rigid wheel and the relative movement of the wave generator, in particular controllable elastic deformation (shape change) of the flexspline to achieve movement and momentum transfer.

 Compared to the other brands to rely on the planetary gear set to achieve dynamic steering, the harmonic gear used by the Audi   gm tech2 Candi  dynamic steering system is a set of structures are widely used in other areas, and it is characterized by simple structure, high load carrying capacity, large transmission ratio; In addition, under the premise of a smooth operation, and its noise suppression is very good.