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A Structural Analysis Approach for Engine Noise Source Identification and Refinement
Technical Paper
2017-01-1799
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Engine noise reduction is one of the highest priorities in vehicle development from the viewpoint of meeting stringent noise regulations. Engine noise reduction involves identification of noise sources and suppression of noise by changing the response of sources to input excitations. Noise can originate from several mechanical sources in engine. The present work focuses on systematic study of the behavior or response of engine structure and its ancillaries to engine excitation and thereby assess their contribution to overall engine noise. The approach includes engine noise and vibration measurement and component ranking using engine noise and vibration measurement in a non-anechoic environment, structural analysis of engine including experimental modal testing of engine and its components, etc. Correlation of the above obtained results is performed to identify the noise sources. Later, ranking of critical components was performed based on results of cladding exercise. Finally these critical engine components were modified suitably and perceivable reduction in engine noise was observed.
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Citation
Inavolu, N., Medisetti, J., Kumar, S., Lingeshkumar, J. et al., "A Structural Analysis Approach for Engine Noise Source Identification and Refinement," SAE Technical Paper 2017-01-1799, 2017, https://doi.org/10.4271/2017-01-1799.Data Sets - Support Documents
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References
- Lalor , N. and Petyt , M. Modes of Engine Structure Vibration as a Source of Noise SAE Technical Paper 750833 1975 10.4271/750833
- Lane , R. , Timour , S. , and Hawkins , G. Techniques of Structural Vibration Analysis Applied to Diesel Engine Noise Reduction SAE Technical Paper 750835 1975 10.4271/750835
- Kabele , D. and Anderkay , G. Techniques for Quieting the Diesel SAE Technical Paper 750839 1975 10.4271/750839