Measurement of noise inside the compartment and vibration on both sides of elastomeric powertrain mounts of passenger car

Mohd Noor Arib Rejab, Roslan Abd Rahman, Raja Ishak Raja Hamzah, Jawaid Iqbal Inayat Hussain, Nazirah Ahmad, Asyraf Ismail

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents an evaluation on elastomeric mount used to isolate vibration from powertrain to chassis or structure vehicle. The assessments started with measurement of noise inside compartment, and exhaust noise. This is followed by the measurement of vibration on both sides of elastomeric mounts. The noise in the compartment and exhaust noise is measured according to BS 6086: 1981 and BS ISO 5130: 2007. The noise in the compartment and vibration is tested in three conditions. Firstly, engine is run-up with load (driving at second gear); secondly, without load; and thirdly, without load but hanging. A microphone is fixed at the ear of the mannequin. The 'fast' response and 'A' weighting sound level meter were used for measurement noise in the compartment and exhaust noise. The vibration is measured in terms of acceleration on both sides of each elastomeric powertrain mounts. Two accelerometer transducers are fixed on both sides of powertrain elastomeric mounts. One side was identified as a source of vibration and the other as receiver of vibrations. The results showed that the pattern of overall vibration level on source and receiver increased from 1050 RPM (idling) to 4000 RPM on all test conditions. Vibration transmitted to chassis or receiver structure was analyzed using transmissibility concept. By evaluating test condition of engine run-up without load, informed that the front and rear mounts showed a high level transmissibility contributing to structure-borne noise.

Original languageEnglish
Title of host publicationNoise, Vibration and Comfort
Pages59-63
Number of pages5
DOIs
Publication statusPublished - 07 Jan 2014
Event4th International Conference on Noise, Vibration and Comfort, NVC 2012 - Kuala Lumpur, Malaysia
Duration: 26 Nov 201228 Nov 2012

Publication series

NameApplied Mechanics and Materials
Volume471
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Other

Other4th International Conference on Noise, Vibration and Comfort, NVC 2012
CountryMalaysia
CityKuala Lumpur
Period26/11/1228/11/12

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Rejab, M. N. A., Rahman, R. A., Hamzah, R. I. R., Inayat Hussain, J. I., Ahmad, N., & Ismail, A. (2014). Measurement of noise inside the compartment and vibration on both sides of elastomeric powertrain mounts of passenger car. In Noise, Vibration and Comfort (pp. 59-63). (Applied Mechanics and Materials; Vol. 471). https://doi.org/10.4028/www.scientific.net/AMM.471.59