噪声与振动控制2011，Vol.31Issue(4)：89-92,4.DOI:10.3969/j.issn.1006-1355-2011.04.021
摩托车怠速异响噪声源的识别及控制
Abnormal Noise Source Identification and Control of Motorcycle under Idle Condition
摘要
Abstract
Utilizing sound intensity method, source separation method and selective sound intensity method comprehensively, the abnormal noise source of motorcycle under idle condition was identified. The production mechanism and transmission of the abnormal noise was analyzed. The results show that the frequency ranges from 891 Hz to 2239Hz and the radiation noise of exhaust muffler heat shield is the dominate source and the impact to the muffler internal partitions by exhaust airflow is the root reason. The abnormal noise can be eliminated effectively by strengthening the connection stiffness of the muffler internal partitions.关键词
声学/异响/声强法/选择性声强法/噪声源识别/噪声控制Key words
acoustics/ abnormal noise / sound intensity method / selective sound intensity method / noise source identification/ noise control分类
机械制造引用本文复制引用
褚志刚,杨洋,蒋忠翰..摩托车怠速异响噪声源的识别及控制[J].噪声与振动控制,2011,31(4):89-92,4.基金项目
国家自然科学基金资助项目(50975296) （50975296）
重庆市科委攻关项目(CSTC2009AC6076) （CSTC2009AC6076）
