Clutch mechanism of motorcycle engine

The utility model provides a clutch mechanism of a motorcycle engine, and belongs to the technical field of motorcycle engines. The motorcycle engine clutch mechanism solves the problem that in the prior art, a motorcycle engine clutch mechanism is low in control precision. The clutch mechanism of the motorcycle engine comprises a driving device and a pull rod which are arranged on an engine box body respectively, the pull rod controls opening and closing of a clutch through axial movement, and the driving device comprises a motor, a driving shaft assembly which is in transmission connection with an output shaft of the motor and used for driving the pull rod to move and a microcontroller which is in signal connection with the motor. The driving shaft assembly is provided with an angle sensor which is in signal connection with the microcontroller and used for detecting the rotation angle of the driving shaft assembly, and the microcontroller can control rotation of the motor according to a rotation angle signa