An Experimental Study on Synchronizing Process of Synchronizer

Abstract

Based on the establishment of each independent phase theoretical model during synchronizing process of synchronizer used in HEV (hybrid electrical vehicle), an experimental means to analyze that synchronizing process is put forward in this article. Firstly, alternative current impedance analyzer is adopted to obtain amplitude and phase angle information of equivalent complex impedance between engaged gear ring and synchronizing ring. There are significant changes between the obtained results when the phase transition happens. Therefore, the moment of each phase transition can be determined through the experimental data. Then, to verify the consistency of the experiment mentioned above, a series of experiments are conducted under different rotation speed differences between the driving and driven cone. The experimental results show that different rotation speed differences lead to different moments when the severe mutation of amplitude and phase angle of the equivalent complex impedance occurs. It demonstrates the validity of the experiment that the rotation speed difference which belongs to phase transition criteria has a certain influence on the phase transition process. Furthermore, it is quite consistent with the actual situation, which also verifies that the experimental method put forward in this article has certain reliability.

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