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Assessing Panel Noise Contribution of a Car Engine Using Particle Velocity Sensors
ISSN: 0148-7191, e-ISSN: 2688-3627
Published June 15, 2015 by SAE International in United States
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In order to apply an effective noise reduction treatment determining the contribution of different engine components to the total sound perceived inside the cabin is important. Although accelerometer or laser based vibration tests are usually performed, the sound contributions are not always captured accurately with such approaches. Microphone based methods are strongly influenced by the many reflections and other sound sources inside the engine bay.
Recently, it has been shown that engine radiation can be effectively measured using microphones combined with particle velocity sensors while the engine remains mounted in the car . Similar results were obtained as with a dismounted engine in an anechoic room.
This paper focusses on the measurement of the transfer path from the engine to the vehicle interior in order to calculate the sound pressure contribution of individual engine sections at the listener's position. To achieve a good signal to noise ratio during acoustic transfer paths a novel monopole loudspeaker was designed. The measurement method and monopole sound source are presented along with results of a validation test.
|Technical Paper||Using Acoustic Particle Velocity Sensors for End of Line Control|
|Journal Article||Design and Evaluation of Output Profile Shaping of an Internal Combustion Engine for Noise & Vibration Improvement|
CitationPignol, F., Tijs, E., Fernandez Comesana, D., and Kim, D., "Assessing Panel Noise Contribution of a Car Engine Using Particle Velocity Sensors," SAE Technical Paper 2015-01-2248, 2015, https://doi.org/10.4271/2015-01-2248.
- Fernandez Comesana , D. Scan-based Sound Visualisation Methods using Sound Pressure and Particle Velocity PhD Thesis University of Southampton 2014
- Tijs , E. , Wind , J. , and Fernández Comesaña , D. Fast, High Resolution Panel Noise Contribution Method SAE Technical Paper 2011-01-1594 2011 10.4271/2011-01-1594
- Verheij , J. W. Inverse and Reciprocity Methods for Machinery Noise Source Characterization and Sound Path Quantification International Journal of Acoustics and Vibration 1 1997 1
- Wolff , O. and Sottek , R. Panel Contribution Analysis - An Alternative Window Method SAE Technical Paper 2005-01-2274 2005 10.4271/2005-01-2274
- Rondeau , J.F. , Duval , A. , Chanudet , P. , Gagliardini , L. , Teyssandier , B. Vehicle acoustic synthesis method: run-up simulation and 3d design of weight reduction technologies SIA LeMans 2008
- Fernandez Comesana , D. , Tijs , E. , and Kim , D. Direct Sound Radiation Testing on a Mounted Car Engine SAE Int. J. Passeng. Cars - Mech. Syst. 7 3 1229 1235 2014 10.4271/2014-01-2088
- Fahy , F. and Walker , J. Fundamentals of noise and vibration E & FN Spon Press 1998
- de Bree , H. and Basten , T. Microflown based monopole sound sources for reciprocal measurements SAE Technical Paper 2008-36-0503 2008 10.4271/2008-36-0503
- Kinsler , L.E. , Frey , A.F. , Coppens , A.B. and Sanders , J.V. Fundamentals of acoustics John Wiley & Sons 2000