Flywheel clutch is located in between the engine and gearbox, clutch assembly fixed on the flywheel after the plane with a screw, the input shaft clutch gearbox output shaft is the. In the car, the driver may need pedal or release the clutch pedal so that the engine and gearbox temporary separation and progressivejoint to cut off the engine or transmission to the transmission input power. Clutch is a common part of the mechanical transmission, the transmission system can be separated or connected at any time. The basic requirements are: smooth engagement, quick and thorough separation; adjust and repair convenient; small size; quality; good wear resistance and sufficient heat dissipation capability; convenient and labor-saving operation, commonly divided into tooth type and friction type two.