What is the working principle of a transmission synchronizer?

1 Answers
Henry
07/30/25 7:14am
The working principle of a transmission synchronizer is as follows: 1. Inertia synchronizers are used in fully synchronized transmissions, mainly consisting of a coupling sleeve and a synchronizing lock ring. 2. Its working principle relies on the sliding friction between metal plates to achieve speed synchronization. Below is additional information on why synchronizers are used: 1. When converting between adjacent gears, different operational steps should be taken, which also applies to the shifting of moving gears. The difference is that the former requires the angular speed of the gear ring to be synchronized with that of the coupling sleeve, while the latter requires the linear speed at the meshing point of the gears to be consistent, though both are based on the same speed analysis principle. 2. The shifting operation of a transmission, especially downshifting from a higher gear to a lower gear, is relatively complex and prone to impact between gear teeth or spline teeth. To simplify the operation and avoid inter-tooth impact, synchronizers can be installed in the shifting mechanism. 3. Inertia synchronizers achieve synchronization through friction, with specialized mechanisms ensuring that the coupling sleeve and the spline gear ring to be engaged cannot contact each other before synchronization is achieved, thereby preventing inter-tooth impact.
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