Application of a sound insulation panel with ventilation holes to the engine under-cover |
| |
| Institution: | 1. Vehicle Research Laboratory, Nissan Research Center, Nissan Motor Co., Ltd., Natsushima-cho, Yokosuka, Kanagawa 237, Japan;2. Research Department, Nissan Diesel Motor Co., Ltd., 1-1, Oh-aza, Ageo, Saitama 362, Japan;1. Centre for Sustainable Materials, Research and Technology (SMaRT), School of Materials Science & Engineering, Faculty of Science, Australia;2. School of Mechanical Engineering, Faculty of Engineering, University of New South Wales Sydney, UNSW, Australia;1. Civil and Infrastructure Engineering, School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia;2. VC Research Fellow, Manufacturing, Materials and Mechatronics, School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia;1. Mansoura University, Public Works Engineering Department, Faculty of Engineering, Mansoura University, Mansoura 35516, Egypt;2. General Directorate for Material and Research, Riyadh 11178, Saudi Arabia;3. Mansoura University, Public Works Engineering Department, Mansoura 35516, Egypt |
| |
| Abstract: | Reducing engine noise is one of the most important issues in lowering vehicle exterior noise. An engine under-cover is one effective measure for reducing engine noise. However, the size of the under-cover is limited by the need to ensure sufficient engine cooling performance. To solve this problem, a new sound insulation panel with ventilation holes was developed and applied to the engine under-cover. The panel accomplishes sound insulation by controlling the acoustic anti-resonance of sound waves transmitted through the ventilation holes. This paper describes guidelines for applying the panel to the engine under-cover from the viewpoints of acoustics and fluid dynamics. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
