What are the functions of clutch
Clutch is an important part of a car. Many people who rely on their driver's license don't know what clutch is for. It doesn't look like it's useful. What's the role of clutch in driving? Let's have a look with Xiaobian.
1. Good for car starting
The car is stationary before starting, because the engine and gearbox are rigidly connected. Once the car is put into gear, the car will suddenly connect the power and suddenly forward rush, which will not only cause damage to the parts, but also the driving force is not enough to overcome the huge inertia force generated by the car forward rush, so that the engine speed drops sharply and the engine stalls.
If the engine and gearbox are separated temporarily by the clutch when starting, and then the clutch is gradually engaged, due to the friction phenomenon between the active part and the driven part of the clutch, the torque from the clutch will gradually increase from zero, and the driving force of the car will gradually increase, so that the car can start smoothly.
2. Convenient shifting
In the driving process of the car, it often involves changing gears to adapt to different driving environment requirements. When changing gears, the clutch will be used. The clutch can temporarily separate the engine from the gearbox, and use the clutch to temporarily separate the engine from the gearbox before shifting. As the load is removed, the pressure between the meshing surfaces is greatly reduced, and it is easy to separate. Without the clutch, the pressure between the meshing surfaces is very large, which is difficult to separate, and it is easy to damage the parts.
3. Protect the transmission system from damage due to excessive pressure
When the vehicle is braked in an emergency, the wheel suddenly decelerates sharply, but the transmission system connected with the engine still keeps the original speed due to the inertia of rotation, which often produces a moment of inertia far greater than the engine torque in the transmission system, so that the parts of the transmission system are easy to be damaged.
4. Reduce torsional shock
The output torque of automobile engine is usually not stable. When the engine is running on the stroke, the inertia of the engine rotation system can reduce the torsional vibration, but the remaining impact force still has a negative impact on the subsequent gearbox and transmission shaft. The damping spring in the clutch can significantly reduce the torsional vibration impact brought by the engine and extend the life of the transmission gear.