Several uses of automobile clutch

 Whether it is a heavy-duty truck, a bus or a small car, the clutch pressure plate and the clutch plate are inseparable, and they form a unified automobile clutch. What role does the automobile clutch play in the operation of the automobile and what role does it play?

The clutch function can be summarized as follows:

 1. Ensure that the car starts smoothly 2. It is easy to shift gears 3. Prevent the transmission system from overloading 4. Reduce torsional vibration impact

1. Ensure that the car starts smoothly: Before starting, the car is at a standstill. If the engine and the gearbox are rigidly connected, once the gear is engaged, the car will suddenly rush forward due to the sudden connection of power, which will not only cause damage to the mechanical parts, but also drive The force is not enough to overcome the huge inertial force generated by the forward rush of the car, causing the engine speed to drop sharply and stalling. If the clutch is used to temporarily separate the engine and the gearbox  howo truck parts when starting, and then the clutch is gradually engaged, due to the phenomenon of slippage between the driving part and the driven part of the clutch, the torque transmitted by the clutch can be gradually increased from zero. The driving force of the car has gradually increased, allowing the car to start smoothly.

2. Easy to change gears: During the driving of the car, different gearbox positions are often used to adapt to changing driving conditions. If there is no clutch to temporarily separate the engine and the gearbox, the power transmission gears engaged in the gearbox will not be removed due to the load, and the pressure between the meshing tooth surfaces is very large and it is difficult to separate. The other gear to be meshed will be difficult to mesh because of the unequal peripheral speed of the two. Even if it enters the mesh forcibly, it will produce a great impact on the tooth end, which is easy to damage the machine parts. After the clutch is used to temporarily separate the engine and the gearbox, the gears are shifted, and the pair of gears howo sinotruk parts catalog pdf that were originally meshed are removed due to load, and the pressure between the meshing surfaces is greatly reduced, making it easy to separate. As for the other pair of gears to be meshed, since the driving gear is separated from the engine, the moment of inertia is very small. Using a suitable shift action can make the peripheral speeds of the gears to be meshed equal or nearly equal, thereby avoiding or reducing the impact between the gears.

3. Prevent the drive train from overloading: When the car brakes in an emergency, the wheels suddenly drop in speed, and the drive train connected to the engine still maintains the original speed due to the rotating inertia, which often produces far greater than the engine torque in the drive system The moment of inertia makes the parts of the drive train easily damaged. Because the clutch transmits torque by friction, when the load in the drive train exceeds the torque that can be transmitted by the friction, the driving and driven parts of the clutch will automatically slip, thus preventing the overload of the drive train. .

4. Reduce torsional vibration impact: The working principle of automobile engine determines the unevenness of its output torque. In the power stroke, the gas explosion in the combustion chamber produces a great impact torque, while in other strokes, the engine is dragged back by inertia. Although the inertia of the engine's rotating system can reduce torsional vibration, the remaining impact force still has an adverse effect on the subsequent gearbox and drive shaft. The damping spring (tangentially distributed) in the clutch can significantly reduce the torsional shock caused by the engine and extend the life of the transmission gear.