变速器异常噪声发生机理及控制

针对SC6350C汽车变速器在空档怠速工况下存在的异常高噪声,利用频谱分析技术对变速器分别进行了整车和台架振动噪声的测量分析,找到了造成异常高噪声的主要根源,并分析了异常噪声的发生机理。结果表明,输入轴和中间轴常啮合齿轮副、二档齿轮副、五档齿轮副为该变速器异响的主要来源,在此基础上,结合该变速器的实际结构,提出了经济可行的改进措施。

The genetic mechanism and control for abnormal noise of the transmission

The spectral analysis was used in the entire vehicle and bench test for the transmission, which is in relation to the high abnormal noise while the transmission of SC6350C vehicle was in the idling and center valve position. The main sources of the abnormal noise were found, and the genetic mechanism was analyzed. The result presents that the main sources were the gear pair of input shaft and intermediate shaft, the second gear pair and the fifth gear pair. The improved and economical measures were adopted which was based on the analysis and the practical structure of the transmission.