发动机油底壳表面辐射低噪声结构设计  

Design on low noise structure of engine oil pan surface

作　　者：段翠芳[1] 李伟[1] 张纪梁 

机构地区：[1]河南机电高等专科学校机电工程系,河南新乡453003

出　　处：《中国农机化学报》2014年第2期191-192,206,共3页Journal of Chinese Agricultural Mechanization

基　　金：河南重点科技攻关计划项目(122102210256)

摘　　要：目前,对发动机表面辐射噪声控制的研究已受到越来越多人们的重视。本文以SQR477F发动机为例,对其油底壳表面辐射噪声进行了研究,发现油底壳中间挡油板的四个自由角边是经常产生油底壳局部模态的部位,提出了控制其表面辐射噪声的有效措施,改进的油底壳刚度大大增强,固有频率显著提高,振动速率有效降低,明显降低了其表面辐射噪声,本设计提出的控制方法经济可行。At present, the study on the control of radiated noise from engine surface has been paid more and more attention. In this paper, taking SQR477F engine as an example, conducts the deep research on the oil pan surface radiation noise, found oil bottom shell in the middle of four free oil baffle plate angle edge is often produced parts of oil pan local modes, and puts forward effective measures to control the surface radiation noise, by improving the oil bottom shell stiffness obviously, the natural frequency of vibration velocity increased, decreased, improved oil pan structure to reduce the oil bottom shell surface radiation noise has a certain role. Control measures are proposed in this paper has some effect to reduce the radiated noise from engine surface, method is economical and feasible.

关 键 词：发动机 噪声控制 油底壳 辐射 

分 类 号：U491.91[交通运输工程—交通运输规划与管理]