The work of diaphragm spring clutch can be divided into three processes: work, separation and engagement.
1. Working process. When the diaphragm spring is installed between the clutch cover and the pressure plate, the pressure on the pressure plate formed by the pre compression deformation will compress the driving and driven parts of the clutch, that is, the clutch is in the engaged state. The engine power is transmitted to the driven plate through the flywheel, clutch cover and pressure plate integrated with the crankshaft, and then to the input shaft of the transmission through the spline shaft sleeve of the driven plate. The working feature of this process is that the torque and speed transmitted by the driving and driven parts of the clutch are the same, and there is no speed difference between the driving and driven parts, and there is no sliding wear.
2. Separation process. The driver steps down the clutch pedal, the pedal moves to the left, the push rod moves to the left, and the diaphragm spring release plate moves to the left through the cylinder and working cylinder. Under this influence, the diaphragm spring uses the support pin fixed on the clutch cover as the fulcrum to move the big end to the right, and at the same time, the pressure plate moves to the right under the action of the separation plate. Finally, there is a gap between the driven plate, flywheel and pressure plate, and the clutch is separated, thus the clutch separation process is ended.
The working feature of the clutch during the separation process is that the power and movement of the engine after separation cannot be transmitted to the driven plate. The active part is still synchronized with the engine speed, while the driven part decreases rapidly.
3. The jointing process. The driver releases the clutch pedal and the pedal returns to its original position under the action of the return spring. At the same time, the driver drives the push rod and release bearing to return. That is to say, the movement of the control mechanism in the engagement process is the reverse process of the separation process. When there is a gap between the release bearing and the diaphragm spring release plate, and the diaphragm spring presses the pressure plate on the driven plate again, the engagement process is completed, and the clutch resumes the power transmission function.
