On the Use of Spatial Transmissibility to Evaluate the NVH Performance of Engine Cover Assembly 2002-01-0458
In the present study, the NVH performance of an engine valve cover assembly is analyzed by the use of “spatial transmissibility (TR)”. It is a measure of the spatial response of the cover relative to the spatial response of the underlying structure to which it is connected. A prototyped engine valve cover assembly is examined. The cover transmissibility is computed through the finite element method and also measured by experimental testing. Various isolation systems have been examined and different cover materials have been investigated, including magnesium and thermosetting plastic. The transmissibility provides a strategy for evaluating the NVH characteristic of engine cover assembly in a much more timely, cost-effective manner, while the product is still in the early conceptual stage.
Citation: Lu, Y. and Anderson, M., "On the Use of Spatial Transmissibility to Evaluate the NVH Performance of Engine Cover Assembly," SAE Technical Paper 2002-01-0458, 2002, https://doi.org/10.4271/2002-01-0458. Download Citation
Author(s):
Y. Charles Lu, Michael E. Anderson
Affiliated:
Dana Corp.
Pages: 10
Event:
SAE 2002 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Noise, Vibration, and Harshness (NVH)
Valve covers
Finite element analysis
Plastics
Magnesium
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