InterNoise99_Walsh_Paper[1].pdf (92.5 kB)
Download fileReduction of vehicle power assisted steering noise
conference contribution
posted on 2010-07-20, 08:21 authored by Stephen Walsh, T.J. DuschaIntroduction: To achieve low levels of noise and vibration in the interior of a vehicle, the noise levels from
major sources such as the engine and transmission have been greatly reduced in recent years.
Unfortunately, this has meant that the noise from ancillary components has become relatively
more prominent. One such component is the power assisted steering (PAS) system, the noise
from which is a problem on nearly all vehicles. This paper reports an investigation into the
moaning noise produced when the steering wheel is turned at idle, commonly known as PAS
moan. The major factors involved in PAS moan are: the transmission of structure-borne and
air-borne noise through the vehicle; the transmission of pressure ripples in the hydraulic
circuit of the PAS system; and the generation of flow ripples at the PAS pump. In section 3
the results of a study into the reduction of PAS moan is reported. Section 3.1 outlines the
experimental set-up and measurement technique. Section 3.2 reports on the effect on vehicle
interior noise of the installation of the of the PAS system. Section 3.3 reports on the influence
of tuning hoses in the PAS hydraulic circuit and section 3.4 gives an assessment of the
reduction in interior noise due to a modification of the power steering pump. The findings
outlined in this paper are part of more detailed study into power steering noise reported in
reference [1].
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Aeronautical and Automotive Engineering
Citation
WALSH, S.J. and DUSCHA, T.J., 1999. Reduction of vehicle power assisted steering noise. IN: Cuschieri, J.M., Glegg, S. and Yong, Y. (eds.). Proceedings of Internoise '99: the 1999 International Congress on Noise Control Engineering, Fort Lauderdale, Florida, USA, 06-08 December 1999. Vol. 106, issue 1. Washington, DC : Institute of Noise Control Engineering, pp.261-264.Publisher
© INCE-USAVersion
- AM (Accepted Manuscript)
Publication date
1999Notes
This is a conference paper. The definitive version is available from: incedl.orgISBN
0962207233;9780962207235Language
- en