噪声与振动控制2017，Vol.37Issue(1)：10-15,6.DOI:10.3969/j.issn.1006-1335.2017.01.003
涡轮增压发动机排气噪声数值计算与分析
Numerical Calculation and Analysis of Exhaust Noise of Turbocharged Engines
摘要
Abstract
The engine and exhaust system coupling effect is calculated and analyzed to optimize the muffler design.Muffler acoustic performance and turbocharged engine exhaust noise are calculated by GT-Power software.The simulation results are compared with experimental data to verify the correctness of the simulation model.On this basis,the structure optimization of the exhaust muffler is studied.The results show that the optimized muffler can satisfy the exhaust noise limitation requirement.Meanwhile,the changing rule of the exhaust noise of the car coupled with engine is analyzed in the transient acceleration process of the car in the distance of hundreds of kilometers.The results show that the exhaust noise with higher pressure level can be stimulated when the automobile speed and the exhaust flow are suddenly changed.关键词
声学/涡轮增压发动机/消声器/排气噪声/瞬态过程Key words
acoustics/turbocharged engine/muffler/exhaust noise/transient process分类
能源科技引用本文复制引用
宋健,季振林..涡轮增压发动机排气噪声数值计算与分析[J].噪声与振动控制,2017,37(1):10-15,6.基金项目
国家"863"高技术研究发展计划资助项目(2014AA041502) （2014AA041502）
