Robustness of powertrain mount system for noise, vibration and harshness at idle

• Published in: Proceedings of the Institution of Mechanical Engineers. Part D, Journal of automobile engineering Vol. 216; no. 10; pp. 805 - 810
• Main Authors: Qatu, M, Sirafi, M, Johns, F
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01.01.2002; Professional Engineering; SAGE PUBLICATIONS, INC
• Subjects: Acoustics; Applied sciences; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Mechanical engineering. Machine design; Physics; Solid mechanics; Structural acoustics and vibration; Structural and continuum mechanics; Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...); Vibrations and mechanical waves; robustness; NVH; mounts; powertrain; Mounting; Wave transmission; Motor car; Vibration; Experimental design; Internal combustion engine; Robustness; Experimental study; Modeling; Structural acoustics
• ISSN: 0954-4070; 2041-2991
• DOI: 10.1177/095440700221600103

Abstract Noise, vibration and harshness (NVH) has become an increasingly important attribute in vehicle engineering. At idle conditions, customer-perceived NVH is dominated by powertrain NVH. Powertrain NVH can be radiated engine noise or noise (and vibration) transmitted through the powertrain mounting system. This paper discusses the variability in the latter NVH as a function of the variability of the mount stiffness parameters. A simple six-degree-of-freedom model is used in the analysis. A detailed design of experiment studies was conducted. It is concluded that better control of mount stiffness parameters would result in improved prediction and performance of idle NVH.