The clutch is located in the flywheel housing between the engine and the gearbox. The clutch assembly is fixed to the rear plane of the flywheel with screws. The output shaft of the clutch is the input shaft of the gearbox. During the driving of the car, the driver can step on or release the clutch pedal as needed to temporarily separate and gradually engage the engine and the gearbox to cut off or transfer the power input from the engine to the transmission. The clutch is a common component in mechanical transmission, which can separate or engage the transmission system at any time. The basic requirements for it are: smooth engagement, rapid and thorough separation; convenient adjustment and repair; small outer dimensions; small mass; good wear resistance and sufficient heat dissipation capacity; convenient operation and labor saving. Commonly used types are divided into two types: tooth type and friction type.
The clutch is installed between the engine and the transmission and is an assembly directly connected to the engine in the automobile transmission system. Usually the clutch is installed together with the flywheel group of the engine crankshaft, and is a component that cuts off and transfers power between the engine and the automobile transmission system. During the entire process from starting to normal driving of the car, the driver can operate the clutch as needed to temporarily separate or gradually engage the engine and the transmission system to cut off or transfer the power output from the engine to the transmission system. Its function is to gradually engage the engine and the transmission to ensure a smooth start of the car; temporarily cut off the connection between the engine and the transmission to facilitate gear shifting and reduce the impact of gear shifting; when the car is in emergency braking, it can play a separation role to prevent the transmission and other transmission systems from overloading, thereby playing a certain protective role.
The clutch is similar to a switch, engaging or disengaging the power transmission function. The active part and the driven part of the clutch mechanism can be temporarily separated, and can be gradually engaged, and it is also possible to rotate relative to each other during the transmission process. The active part and the driven part of the clutch cannot be rigidly connected. Any form of car has a clutch device, just in different forms.