Title: Robustness of mount systems for idle NVH, Part I: Centre of Gravity (CG) mounts

Authors: Mohammad Sirafi, Yin-Ping Chang, Mohamad S. Qatu

Addresses: Oakland University, Rochester Hills, MI, USA. ' Oakland University, Rochester Hills, MI, USA. ' Ford Motor Co, Dearborn, MI, USA

Abstract: A key parameter for frequency or modal separation of the powertrain is the basic mount design. For East-West engine configurations, there are two fundamental arrangements of mounts: the CG and pendulum arrangements. This paper discusses the variability of the modal separation of the powertrain rigid body modes as a function of the variability of the mount geometry and property parameters as well as sub-frame mount stiffness values. Six and 12 Degrees of Freedom (DOF) models are used in the analysis. Detailed Design of Experiment (DOE) studies are conducted.

Keywords: robustness; idle NVH; powertrain; mount design; engine configurations; centre of gravity mounts; modal separation; rigid body modes; mount geometry; mount parameters; sub-frame mount stiffness; design of experiments; DOE; vehicle vibration; vehicle noise; harshness.

DOI: 10.1504/IJVNV.2006.012782

International Journal of Vehicle Noise and Vibration, 2006 Vol.2 No.4, pp.317 - 333

Published online: 14 Mar 2007 *

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