Clutch friction plate structure and working principle
The clutch friction plate is made of non-asbestos material, metal wire and other materials. It has certain characteristics of high temperature resistance, friction force, and impact resistance. Although it seems very thin, if it is too thick, it will affect its life. Friction materials that have to carry larger torques, after all, these high-temperature resistant materials with greater friction do not have that great strength, so it is better to make them as thin as possible.
You ask why it can withstand such a large transmission torque? This is very simple, because it is at the output end of the crankshaft. In addition to its own strength guarantee, there is also a large area that can make it work normally. Have you noticed this? Furthermore, the power output by the crankshaft has not been decelerated by the gearbox, and its torque is much smaller than that of the wheels.
The specific structure of the clutch friction plate:
The first is to meet the two basic performance requirements under the premise of ensuring the maximum torque of the transmission engine, that is, complete separation and soft engagement; second, the moment of inertia of the clutch driven part should be as small as possible. If this moment of inertia is large, when shifting gears, although the clutch is disengaged, the connection between the engine and the transmission is disconnected, but the larger inertial moment of the clutch driven part is still input to the transmission, the effect is equivalent to incomplete separation. It can not play a good role in reducing the impact between the teeth.
In addition, Longli believes that good clutch heat dissipation is also required. Because the driver manipulates the clutch many times during the driving of the car, this causes the clutch to generate a lot of heat due to frequent relative slippage between the friction surfaces. The softer the clutch is engaged, the greater the heat generated. If this heat is not released in time, it will have a serious impact on the work of the clutch.
The working principle of the clutch friction plate:
The engine flywheel is the driving part of the clutch, and the driven disc and the driven hub with friction plates are connected with the driven shaft (that is, the driving shaft of the transmission) by sliding splines. The compression spring presses the driven plate against the end face of the flywheel. The engine torque is transmitted to the driven disk by the friction between the contact surface of the flywheel and the driven disk, and then transmitted to the driving wheel through a series of components in the driven shaft and the drive train. The greater the compression force of the compression spring, the greater the torque that the clutch can transmit.