结果表明，减小同步带跨度既可以有效减小同步带运动过程中横向振动幅度，又可以使同步带运动有效避开正时传动机构可能的共振区。
The study shows that shortening the span length can effectively reduce the transverse vibration amplitude of synchronous belt and can avoid possible resonance region of synchronous belt.
顶置凸轮，链条传动，正时配气系统传动平稳，噪音小。
Upward camshaft; chain transmission; timing distribution system is stable and has little noise.
顶置凸轮，链条传动，正时配气系统传动平稳，噪音小。
Upward camshaft; chain transmission; timing gas distribution system is stable and has little noise.
在发动机正时机构的齿形链传动中，由于存在多边形效应，链条中心线上下波动，链板啮入轮齿时存在啮入冲击。
In the process of the silent chain drive used as the timing transmission in motor, the chain always suffers from meshing impact and waving for polygon action.
在发动机正时机构的齿形链传动中，由于存在多边形效应，链条中心线上下波动，链板啮入轮齿时存在啮入冲击。
In the process of the silent chain drive used as the timing transmission in motor, the chain always suffers from meshing impact and waving for polygon action.
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