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What is the difference between synchronous twin-cylinder and asynchronous twin-cylinder motorcycle engines?

1 Answers

LeAlaina

07/30/25 2:41am

Motorcycle engine synchronous twin-cylinder and asynchronous twin-cylinder differences are as follows: Differences in RPM, vibration, and torque: The main differences between asynchronous twin-cylinder and synchronous twin-cylinder engines are that asynchronous twin-cylinder engines have relatively less vibration and less torque, while synchronous twin-cylinder engines have relatively more vibration and more torque. Differences during operation of the two cylinders: In addition to the differences in RPM vibration and torque size, there are other differences between asynchronous twin-cylinder and synchronous twin-cylinder engines. When an asynchronous twin-cylinder engine operates, the two cylinders are staggered—when one is up, the other is down, with a 270-degree difference between them. On the other hand, a synchronous twin-cylinder engine operates with both cylinders moving up and down simultaneously, but the power strokes are staggered—when one cylinder is in the power stroke, the other is in the intake stroke, and when one cylinder is compressing, the other is exhausting.

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