Luk Clutch Course

LuK Clutch Course

An introduction to clutch technology for passenger cars

The content of this brochure shall not be legally binding and is for information purposes only. To the extent legally permissible, Schaeffler Automotive Aftermarket GmbH & Co. KG assumes no liability out of or in connection with this brochure. All rights reserved. Any copying, distribution, reproduction, making publicly available or other publication of this brochure in whole or in extracts without the prior written consent of Schaeffler Automotive Aftermarket GmbH & Co. KG is prohibited.

Copyright © Schaeffler Automotive Aftermarket GmbH & Co. KG May 2012

Contents

Contents

Page 1 2 3 4 5 6 7 8 9 A history of clutch technology Conventional clutch The clutch disc Clutch pressure plate The Dual-Mass Flywheel – DMF Hydraulic clutch release systems Automated Shift Gearbox – ASG The double-clutch gearbox CVT functions and components 4 13 16 20 28 32 36 38 42 48 50

10 Torque converter Conclusion

3

1 A history of clutch technology

1 A history of clutch technology

In the course of over 100 years of automotive history, nearly all components have undergone enormous technological developments. Reliability, production costs and service-friendliness as well as, more recently, environmental safety, have been and continue to be the criteria demanding new and better solutions from automotive engineers. The basic designs are usually known early on, but only the availability of new materials and processing procedures makes their realization feasible. It was not until the end of the first decade of this century that the internal combustion engine surpassed the competing steam and electricity-based automotive drive concepts on a large scale. In 1902, a petrol-engined vehicle for the first time broke the overall speed record; up to then, electric and steam-powered vehicles had set the standards, and proponents of the three drive concepts continued to compete for the absolute speed record...