关键词: 变速器；主副箱结构；高低档切换；气阀卡滞；试验台架

Abstract: In the process of switching between high and low gears in the transmission with the main and auxiliary case structure, the valve occasionally stuck. There may be a situation where the auxiliary case is not converted to the main case in gear, which will damage the synchronizer of the auxiliary case. Therefore, the valve is an important part of the shift air path. In view of the jam detection requirements and working conditions, the transmission valve jam detection test bench is designed. The bench can detect the occasional jam of the valve and record the relevant parameters. The data can be used to judge the probability of jam and the performance of the valve, so as to provide data support for the newly developed valve or the improved valve, and can also be a good evaluation of the improved effect.

Key words: Transmission; Main and auxiliary case structure; Switching between high and low gears; Valve jam; Test bench