Title: Wet belt friction-induced dynamic instability and noise in Automotive Accessory Belt Drive Systems

Authors: Gang Sheng, Lance D. Miller, Les Brown, Jerzy Otremba, Jian Pang, Mohamad S. Qatu, Rao V. Dukkipati

Addresses: Gates Corporation, 2975 Waterview Drive, Rochester Hills, USA. ' Gates Corporation, 2975 Waterview Drive, Rochester Hills, USA. ' Gates Corporation, 2975 Waterview Drive, Rochester Hills, USA. ' Gates Corporation, 2975 Waterview Drive, Rochester Hills, USA. ' Ford Motor Company, MD X8, 20800 Oakwood BLVD, Dearborn, MI 48121, USA. ' Ford Motor Company, MD X8, 20800 Oakwood BLVD, Dearborn, MI 48121, USA. ' School of Engineering, Fairfield University, Fairfield, CT 06824, USA

Abstract: This paper presents an investigation of V-ribbed belt (Micro-V™) wet friction and friction-induced slip noise in Accessory Belt Drive Systems (ABDS). A set of experiments was conducted by using an industry standard test rig and a standard material friction tester. A theoretical analysis and model are presented to elaborate the results. The tribological property of the interface is characterised to be unsteady mixed lubrication with water, which possesses the feature of negative slope of friction with velocity. The friction-induced dynamic instability and noises are also investigated. It is shown that the noise is directly associated with the negative slope of the friction-velocity curve.

Keywords: V-ribbed belt; pulley; front accessory drive; vehicle noise; NVH; squeals; rattles; wet belt; mixed lubrication; automotive engine; wet friction; slip noise; vehicle noise; dynamic instability; belt drive systems.

DOI: 10.1504/IJVNV.2006.011969

International Journal of Vehicle Noise and Vibration, 2006 Vol.2 No.3, pp.249 - 265

Published online: 06 Jan 2007 *

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