The clutch is located in the flywheel housing between the engine and the gearbox. The clutch assembly is fixed on the rear plane of the flywheel with screws, and the output shaft of the clutch is the input shaft of the gearbox. When the car is running, the driver can step on or release the clutch pedal as needed, so that the engine and gearbox are temporarily separated and gradually engaged, thus cutting off or transmitting the power input from the engine to the gearbox.
Clutch is a common component in mechanical transmission, which can be separated or engaged at any time. Its basic requirements are: smooth joint, rapid and complete separation; Convenient adjustment and maintenance; Small overall size; Small mass; Good wear resistance and sufficient heat dissipation capacity; The operation is convenient and labor-saving, and the common ones are claw type and friction type.
Extended data
Typical clutch working process
Diaphragm spring clutch, its work can be divided into three processes: work, separation and engagement.
1, workflow. When the diaphragm spring is installed between the clutch cover and the pressure plate, it will be pre-compressed, and the pressure on the pressure plate will compress the driving and driven parts of the clutch, that is, the clutch is in an engaged state. The power of the engine is transmitted to the driven plate through the flywheel, clutch cover and pressure plate connected to the crankshaft, and then to the input shaft of the transmission through the spline shaft sleeve of the driven plate. The working characteristic of this process is that the torque and rotation speed transmitted by the driving part and the driven part of the clutch are the same, and there is no difference in rotation speed between the driving part and the driven part, so there is no slip phenomenon.
2. Separation process. When the driver steps on the clutch pedal, the pedal moves to the left, the push rod moves to the left, and the diaphragm spring separation plate is pushed to the left by the cylinder and the working cylinder. Affected by this, the diaphragm spring moves the big end to the right with the supporting pin fixed on the clutch cover as the fulcrum, and at the same time pulls the pressure plate to the right through the action of the separator. Finally, there is a gap between the driven disk, flywheel and pressure plate, and the clutch is separated, and the clutch separation process is over.
The working characteristic of the clutch in the process of separation is that the power and motion of the engine cannot be transmitted to the driven plate after separation. The driving part still keeps pace with the engine speed, while the driven part decreases rapidly.
3. Bonding process. When the driver releases the clutch pedal, the pedal returns to the original position under the action of the return spring, and simultaneously drives the push rod and the release bearing to return. That is to say, the movement of the control mechanism in the joining process is the reverse process of the separation process. When there is a reserved gap between the release bearing and the diaphragm spring release disc, and the diaphragm spring presses the pressure plate on the driven disc again, the engagement process ends and the clutch resumes the power transmission function.
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