High-performance Friction Systems for Active Torque Management

The International CTI Symposium is a meeting point for experts from all over the world who wish to discover and discuss the latest technologies and developments in the automotive transmission and alternative drives sector. At this year’s symposium Falk Nickel from the Miba Friction Group gave a lecture on “High-performance friction systems for active torque management”

Friction systems are key functional components for the torque management in many of todays and upcoming driveline concepts. The analysis of typical driveline characteristics in regards of the friction system needs shows very diverse requirement profiles. Physical contrary needs for the friction system, like stiff versus elastic, drive the need for multiple technologies. This complies with the chemical accommodation to different oil technologies and the resulting friction characteristic which for one major aspect impacts the noise- vibration-harshness NVH robustness. The different duty cycles result in substantial distinctions for energy, power and temperature loads. This all leads to the favorable just right friction system approach, creating the optimum functional and economical value for the driveline by its properties. Mastering this complexity efficiently for best time to market by all involved partners requires a capable material technology portfolio and a powerful engineering tool chain. 

Naturally the tools are designed to support engineering solutions on the lowest integration level possible. Latest example for this is the drag torque test rig DTTR which offers vehicle system correlating drag data on friction system component level. Even before reaching the hardware phase, the application engineering tool AET supports the interactive layout work by systematically considering all the material options. The development of the virtual friction function prediction, based on heuristic modeling, is very promising to add further value to the system engineering.

For more information, please download the CTI paper.