Title: Vehicle power-train noise refinement using the Taguchi method

Authors: Xu Wang, He Ren

Addresses: School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, Bundoora East, Melbourne, Australia. ' School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, Bundoora East, Melbourne, Australia

Abstract: This paper involves an introduction of an approach to reduce powertrain noise where the Design Of Experiments (DOE) has been implemented. Decoupling tests have been conducted on a test car to identify the engine noise transmission paths into the cabin. Under each coupling/decoupling combination, sound pressure levels at ear locations have been measured and evaluated in the second gear slow acceleration. Statistical calculations have been conducted to determine major noise transmission paths and refinement strategies. The experimentation and further development work result in a substantial reduction of power-train noise, as well as a reduction in pre-production power-train mounting development time.

Keywords: powertrain isolation; structure borne noise; design of experiments; DOE; powertrain mounting design; noise transfer path analysis; transmission mount brackets; sound pressure levels; sound pressure spectra; order tracking; Taguchi methods; vehicle noise; vehicle vibration; engine noise.

DOI: 10.1504/IJVNV.2007.015177

International Journal of Vehicle Noise and Vibration, 2007 Vol.3 No.3, pp.286 - 301

Published online: 20 Sep 2007 *

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