Abstract
In this study, we used a four-cylinder inline diesel engine as an example to explain how to use test methods and multi-body dynamic techniques to identify the exact source of noise and vibration. A 1 meter noise test was conducted to indicate that the engine front end is the main source of noise. The near-field sound intensity method and the near-field acoustic holography technique were used to identify the chain drive system as the source of noise and vibration. A 3D dynamic analysis model of the timing chain drive system was established using RecurDyn software. Results of the analysis show that the hydraulic tensioner is incompatible with the timing drive system of the bush roller chain. Hence, the timing chain system causes a loud noise and strong vibration. Some strategies on how to optimize the timing chain drive system are presented at the end of this paper.
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Recommended by Editor Yeon June Kang
Jiaxin Xi is a Ph.D. candidate in the College of Mechanical Science and Engineering, Jilin University. Her research interests include multi-body dynamic characteristic analysis as well as noise and vibration source analysis of timing chain systems.
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Xi, J., Feng, Z., Wang, G. et al. Vibration and noise source identification methods for a diesel engine. J Mech Sci Technol 29, 181–189 (2015). https://doi.org/10.1007/s12206-014-1225-9
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DOI: https://doi.org/10.1007/s12206-014-1225-9