摘要
通过试验方法获取燃烧噪声的传递函数 ,并测量噪声和缸内压力信号 ,用时间窗获取包含活塞拍击噪声的燃烧噪声 ,并与缸内燃烧压力和传递函数计算所得的燃烧噪声进行比较分析 ,得到了活塞拍击噪声出现的频率范围。对活塞拍击噪声的特性进行了进一步分析。
In this paper,the tra nsfer function of the combustion n oise and the signals of noise and in-cylinder pressure are measured by experiment.The combustion noise including the piston slapping nois e is obtained by time window and c ompared with the combustion noise calculated from combustion pressur e and noise transfer function,and hence to get the frequency range o f piston slapping noise.Through th e measurement and analysis of the surface vibration signals of the e ngine when cranking and normal run ning,the characteristics of the pi ston slapping noise are further an alyzed.
出处
《汽车工程》
EI
CSCD
北大核心
2004年第6期662-665,670,共5页
Automotive Engineering
基金
国家自然科学基金资助项目 (5 0 176 0 34)
教育部科学技术研究重点项目 (0 30 4 9)。
