The clutch is mounted between the engine and the transmission. It is the assembly of the engine directly connected to the engine. Typically, the clutch is attached to the flywheel assembly of the engine crankshaft and is part of the engine that cuts off and transmits power between the engine and the driveline. The automobile from the start to the whole process of normal driving, clutch master may need to operate the clutch, the engine and transmission temporarily separated or progressivejoint to cut off the engine or transmission power output to the drive system. Its role is to enable gradual engagement between the engine and the transmission, so as to ensure a smooth start car; temporarily cut off the link between the engine and the transmission, in order to facilitate the shift and reduce shifting impact; when automobile emergency brake can play the separation role, prevents transmission systems and so on overload, which play a protective role the. If the clutch slipping phenomenon, it is necessary to promptly repair to the professional repair shop, according to the corresponding lubrication or repair, serious and timely replacement, to ensure traffic safety.