Introduction of inertial synchronizer
Inertial synchronizers, like normal pressure synchronizers, rely on friction to achieve synchronization. However, it can structurally ensure that the engagement sleeve and the spline ring gear to be engaged cannot be in contact before synchronization is achieved, to avoid inter-tooth impact and noise.
Inertial synchronizers are widely used in transmissions for cars and light and medium trucks. There are two common structural forms: lock ring inertia synchronizer and lock pin inertia synchronizer.