Influence of Pre-damage on the Friction Behaviour of Wet-running Multi-plate Clutches in an Endurance Test Einfluss von Vorschädigung auf das Reibungsverhalten nasslaufender Lamellenkupplungen im Dauerschaltbetrieb

Schneider T, Völkel K, Pflaum H, Stahl K (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Forschung Im Ingenieurwesen-Engineering Research Springer Verlag (Germany)

Book Volume: 85

Pages Range: 859-870

Journal Issue: 4

DOI: 10.1007/s10010-021-00540-4

Abstract

Breakdowns of multi-disc clutches must be avoided because of safety-critical functionalities in powertrains. Besides long-term damage of multi-plate clutches, spontaneous damage is of major relevance. This paper is about the influence of spontaneous damage on the shifting behavior during continuous shifting operation. First, spontaneous damage is caused by shifting operations with high loads. Therefore, three clutches are pre-damaged in step tests with different load levels to cause spontaneous damage (local discoloration, local thickening). In a second step, continuous shifting tests are performed with the three pre-damaged clutch packs and an undamaged reference clutch. During the continuous shifting tests, the friction behavior of the clutches is measured and compared. Local discolorations are visible in a reduced form after the continuous shifting tests. Local thickenings are still present on the steel plates. In the continuous shifting test, the average coefficient of friction µmit with the pre-damaged clutch packs tends to be higher. In the continuous shifting test, speed-dependent fluctuations of the friction torque can be observed. The stronger the previous damage was, the greater the fluctuations were.

Involved external institutions

Technische Universität München (TUM) DE Germany (DE)

How to cite

APA:

Schneider, T., Völkel, K., Pflaum, H., & Stahl, K. (2021). Influence of Pre-damage on the Friction Behaviour of Wet-running Multi-plate Clutches in an Endurance Test Einfluss von Vorschädigung auf das Reibungsverhalten nasslaufender Lamellenkupplungen im Dauerschaltbetrieb. Forschung Im Ingenieurwesen-Engineering Research, 85(4), 859-870. https://doi.org/10.1007/s10010-021-00540-4

MLA:

Schneider, Thomas, et al. "Influence of Pre-damage on the Friction Behaviour of Wet-running Multi-plate Clutches in an Endurance Test Einfluss von Vorschädigung auf das Reibungsverhalten nasslaufender Lamellenkupplungen im Dauerschaltbetrieb." Forschung Im Ingenieurwesen-Engineering Research 85.4 (2021): 859-870.

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