噪声与振动控制

›› 2011, Vol. 31 ›› Issue (5): 42-44.DOI: 10.3969/j.issn.1006-1355-2011.05.010

• 3.运载工具振动与噪声 • 上一篇    下一篇

发动机进气系统性能仿真及降噪优化

侯献军1, 2，朱美颖1, 2，刘志恩1, 2，颜伏伍1, 2，杨 晓3   

  1. （ 1. 武汉理工大学 汽车工程学院， 武汉 430070；2. 现代汽车零部件技术 湖北省重点实验室， 武汉 430070；3. 上汽通用五菱汽车股份有限公司， 广西 柳州 545007 ）
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-10-18 发布日期:2011-10-18

Performance Simulation and Noise Reduction of Engine Intake System

HOU Xian-jun 1, 2,ZHU Mei-ying 1, 2, LIU Zhi-en 1, 2,YAN Fu-wu 1, 2，YANG Xiao 3   

  1. （ 1. Wuhan University of Technology， Wuhan 430070， China;2. Hubei Key Laboratory of Advanced Technology of Automotive Parts， Wuhan 430070, China;3. SAIC GM Wuling Automobile Co.Ltd， Liuzhou 545007, Guangxi China )
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-10-18 Published:2011-10-18

摘要： 在GT-Power中建立某发动机进气系统性能仿真模型，针对阶次声压级下个别转速进气口噪声高于目标噪声的问题进行优化，结构上增加空气滤清器容积，调整赫姆霍兹谐振腔和1/4波长管参数。仿真结果表明，优化后的进气口噪声总声压级和阶次声压级均低于目标限值，进气压降也满足不高于2.5 kPa的要求，发动机噪声有明显改善。

关键词: 声学, 空气滤清器, 谐振腔, 1/4波长管, 噪声

Abstract: Performance simulation and optimization of noise reduction of engine’s intake system are researched in this paper. The models for simulating the intake system performance are established by GT-Power. Due to the problem that the noise in inlet port is higher than the target noise at some individual rotary speeds under the Sound Pressure Level (SPL) of order, the volume of air-filter is increased, and the parameters of Helmholtz resonator and 1/4 wavelength pipe are adjusted. The results of simulation verify that after optimization the total SPL and the SPL of order in the inlet port are lower than the target noise, and the pressure loss is less than 2.5kPa, which means that the engine noise is reduced significantly.

Key words: acoustics, air-filter, resonator, 1/4 wavelength pipe, noise

中图分类号: