基于某款发动机减振皮带轮对NVH性能的影响分析  

Analysis of the Effects of TVD on NVH Performance Based on a Certain Engine

作　　者：彭北京 尹建东 沈源 王瑞平 Peng Beijing;Yin Jiandong;Shen Yuan;Wang Ruiping(Ningbo Geely Royal Engine Components Co.,Ltd.Ningbo,Zhejiang,315336,China;Zhejiang Geely Royal Engine Co.,Ltd.)

机构地区：[1]宁波吉利罗佑发动机零部件有限公司 [2]浙江吉利罗佑发动机有限公司

出　　处：《小型内燃机与车辆技术》2019年第5期70-72,共3页Small Internal Combustion Engine and Vehicle Technique

摘　　要：某款发动机在开发过程中,搭载于整车进行NVH主观评价试验,发现在某种试验工况下存在敲击噪声。经NVH测试分析,该敲击噪声仅出现在某一频率段的特定工况下。在此工况下,曲轴系统弯曲振动引起的噪声幅值较大。围绕此弯曲振动问题,调整减振皮带轮转动惯量和频率,制作不同频率组合的样件,进行NVH性能测试和主观评价对比,找出了对NVH性能改善比较明显的减振皮带轮最佳频率范围。During the development of an engine,the subjective evaluation of NVH with the vehicle found that there was a knock noise under a certain test condition.The NVH test shows that the knocking noise only appears in a certain frequency band under a specific working condition.In this case,the noise amplitude caused by bending vibration of crankshaft system is large.Aiming at this bending vibration problem,via adjusting the moment of inertia and frequency of TVD and making samples with different frequency combinations,NVH performance test was carried out and subjective evaluations were compared.The optimum frequency range of TVD with obvious improvement of NVH performance was found.

关 键 词：NVH 敲击噪声 曲轴系统 弯曲振动 转动惯量 频率 

分 类 号：TK417.127[动力工程及工程热物理—动力机械及工程]