Vibration investigation of mechanisms of action in the frictional contact of wet clutch systems in hybrid vehicles

  • Subject:Schwingungstechnische Untersuchung von Wirkmechanismen im Reibkontakt nasslaufender Kupplungssysteme im Hybridfahrzeug
  • Type:Masterarbeit
  • Date:ab sofort
  • Tutor:

    M.Sc. Arne Bischofberger

  • Person in Charge:offen
  • Zusatzfeld:

    Aushang ab: 19.08.2022

Wet clutch systems will continue to be present in many powertrain topologies in the future, not only in the field of vehicle technology, partly due to increasing hybridization and the automation of transmissions. The progressive change in mobility sometimes leads to changed forms of excitation in powertrains due to increasing hybridization. This also results in a change and increase in the demands on vibration-reducing components. The wet multi-plate clutch is one way of reducing vibrations as required in future hybrid powertrains. In order to be able to efficiently use possible functional extensions of the clutch system, such as vibration reduction, in future applications, sometimes hybrid powertrains, a targeted design of the tribological system is required. Knowledge of the relationships between frictional behavior and vibration-reducing effect is of central importance here. Also with regard to efficiency and environmental aspects, this represents a central topic in the validation of the modern coupling system.


Within the scope of the final thesis, various operating conditions in the slip-driven wet clutch system with different oil and friction lining variants are to be analyzed in terms of vibration technology. The aim is to derive conclusions about the existing mechanisms of action, such as damping components. For this purpose, measurement data of the input and output speeds in different operating conditions and for different tribological systems (oil and friction lining variations) are available. The transmission behavior is to be analyzed and compared for the different systems by means of amplitude and phase response, among other things. Other methods, some of which have already been developed, can be used to support this. The work will be concluded with a first scientific interpretation of the results.


  • Master's degree in the field of mechanical engineering, mechatronics and information technology, electrical engineering, engineering sciences or a similar course of study
  • Interest in the research topic, but previous knowledge is not mandatory
  • Independent and reliable way of working

Interested? Pleasecontact me: arne bischofberger does-not-exist.kit edu or by phone