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Noise, vibration and harshness during dry clutch engagement oscillations

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journal contribution
posted on 01.05.2020, 09:27 by Ilias Minas, Nick Morris, Stephanos Theodossiades, Martin O’Mahony
Determining 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 Science

Volume

234

Issue

23

Pages

4572-4588

Publisher

SAGE Publications

Version

VoR (Version of Record)

Rights holder

© IMechE 2020

Publisher 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

21/04/2020

Publication date

2020-06-03

Copyright date

2020

ISSN

0954-4062

eISSN

2041-2983

Language

en

Depositor

Dr Nick Morris Deposit date: 30 April 2020

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