Morris_0954406220927065.pdf (1.43 MB)
Noise, vibration and harshness during dry clutch engagement oscillations
journal contribution
posted on 2020-05-01, 09:27 authored by Ilias Minas, Nick MorrisNick Morris, Stephanos TheodossiadesStephanos Theodossiades, Martin O’MahonyDetermining the root causes of various Noise, Vibration and Harshness (NVH) phenomena in modern
automotive drivetrains is a critical task for industry, since NVH issues often result in worsened driving
experience. The aim of the current research is to investigate the dynamics during dry clutch engagement
and the associated – often problematic – oscillations. This paper reports the development and partial
validation of numerical models to study dry clutch behaviour. The models are used to investigate the
influence of clutch and throttle actuation on the occurrence of unwanted clutch oscillations. The
dynamic coefficient of friction between the clutch interacting surfaces was measured using a pin-ondisc rig under different slip speed and contact pressure conditions, which are representative of a typical
clutch engagement manoeuvre. The paper highlights the occurrence of instability issues in clutch
dynamics (disc radial mode) as potential generators of aggressive NVH, particularly during two
different clutch pedal actuations. Such analysis has not hitherto been reported in the open literature.
Funding
Case Award - DTP- Holding account for grant ref. EP/N509516/1 : EP/N509516/1
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
Proceedings of the Institution of Mechanical Engineers Part C: Journal of Mechanical Engineering ScienceVolume
234Issue
23Pages
4572-4588Publisher
SAGE PublicationsVersion
- VoR (Version of Record)
Rights holder
© IMechE 2020Publisher statement
This is an Open Access Article. It is published by Sage under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/Acceptance date
2020-04-21Publication date
2020-06-03Copyright date
2020ISSN
0954-4062eISSN
2041-2983Publisher version
Language
- en