Influence of Water Contamination, Iron Particles, and Energy Input on the NVH Behavior of Wet Clutches
Johannes Wirkner,
Mirjam Baese,
Astrid Lebel,
Hermann Pflaum,
Katharina Voelkel,
Lukas Pointner-Gabriel,
Charlotte Besser,
Thomas Schneider,
Karsten Stahl
Affiliations
Johannes Wirkner
Gear Research Center (FZG), Department of Mechanical Engineering, School of Engineering and Design, Technical University of Munich, Boltzmannstrasse 15, D-85748 Garching, Germany
Mirjam Baese
Magna Powertrain GmbH & Co. KG, Industriestrasse 35, A-8502 Lannach, Austria
Astrid Lebel
AC2T Research GmbH, Viktor-Kaplan-Strasse 2/C, A-2700 Wiener Neustadt, Austria
Hermann Pflaum
Gear Research Center (FZG), Department of Mechanical Engineering, School of Engineering and Design, Technical University of Munich, Boltzmannstrasse 15, D-85748 Garching, Germany
Katharina Voelkel
Gear Research Center (FZG), Department of Mechanical Engineering, School of Engineering and Design, Technical University of Munich, Boltzmannstrasse 15, D-85748 Garching, Germany
Lukas Pointner-Gabriel
Gear Research Center (FZG), Department of Mechanical Engineering, School of Engineering and Design, Technical University of Munich, Boltzmannstrasse 15, D-85748 Garching, Germany
Charlotte Besser
AC2T Research GmbH, Viktor-Kaplan-Strasse 2/C, A-2700 Wiener Neustadt, Austria
Thomas Schneider
Gear Research Center (FZG), Department of Mechanical Engineering, School of Engineering and Design, Technical University of Munich, Boltzmannstrasse 15, D-85748 Garching, Germany
Karsten Stahl
Gear Research Center (FZG), Department of Mechanical Engineering, School of Engineering and Design, Technical University of Munich, Boltzmannstrasse 15, D-85748 Garching, Germany
The driving comfort and safety of the automotive powertrain are significantly related to the performance, lifetime, and functionality of the lubricant. The presented study focuses on investigating the performance loss of the lubricant due to water contamination resulting from environmental influences and iron particles originating from the wear of different machine elements. The main purpose is to determine critical factors that contribute to the degradation of the lubricant, and increase the tendency to NVH behavior, leading to adverse comfort losses to the respective user. Therefore, this performance loss is evaluated by test rig-based analysis of the friction behavior of wet clutches. Due to physical adsorption, a significant impact of water and iron contamination on the degradation of the lubricant is found, while the influence of the energy input is secondary.
