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Improving Rough Road NVH by Hydraulic Mount Design Optimization
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2020 by SAE International in United States
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Vehicle cabin comfort emphasizes a specific image of a brand and its product quality. Low frequency powertrain induced noise and vibration levels are a major contributor affecting comfort inside passenger cabin. Thus, using hydraulic mount is a natural choice. Introduction of lighter body panels coupled with cost effective hydraulic mounts has resulted in some additional noises on rough road surfaces which are challenging to identify during design phase. This paper presents a novel approach to identify two such noises i.e. Cavitation noise and Mount membrane hitting noise based on component level testing which are validated at vehicle experimentally. These noises are encountered at 20~30kmph on undulated road surfaces. Sound quality aspect of such noises is also studied to evaluate the solution effectiveness.
CitationSingh, V., Seenivasan, G., Gupta, G., and Agrawal, A., "Improving Rough Road NVH by Hydraulic Mount Design Optimization," SAE Technical Paper 2020-01-0422, 2020, https://doi.org/10.4271/2020-01-0422.
Data Sets - Support Documents
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- Powell , J.
- Verma , P. , Chatterjee , J. , Bhadani , P. , and Ghosh , C. Design Optimization of Engine Mount De-Coupler for Cabin Noise Refinement in Passenger Vehicle SAE Technical Paper 2019-26-0199 2019 https://doi.org/10.4271/2019-26-0199