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1, ensure the smooth start of the tanker
This is the primary function of the tanker clutch. Before the car starts, it is natural to start the engine first. When the car started, the car gradually accelerated from a completely static state. If the drive train (which is in contact with the entire car) is rigidly linked to the engine, the transmission will hang up and the car will suddenly rush forward, but it will not start. This is because the car has a great inertia when it comes to standstill and causes great resistance to the engine. Under this inertial moment of resistance, the engine speed drops sharply to the lowest stable speed (typically 300-500 RPM) in the instant. The engine is off and cannot work, and of course the car cannot start.
Therefore, we need the help of a clutch. After the engine is started, before starting the car, the driver first depresses the clutch pedal, disengages the clutch, disengages the engine from the driveline, and then hangs up the transmission, and gradually releases the clutch pedal to gradually engage the clutch. In the process of joining, the resistance torque of the engine gradually increases, so the accelerator pedal should be gradually depressed, that is, the fuel supply to the engine is gradually increased, so that the engine speed is always maintained at the lowest stable speed, without stalling. At the same time, as the tightness of the clutch is gradually increased, the torque transmitted from the engine to the drive wheels via the drive train gradually increases. When the traction force is sufficient to overcome the starting resistance, the car starts to move from rest and accelerates gradually.
2, to achieve a smooth shift tanker <br style="FONT-FAMILY: "> In the car driving process, in order to adapt to changing driving conditions, the transmission often have to change the work of different stalls. To achieve the shift of the gear type transmission, it is usually toggle gear or other gear mechanism, so that a certain gear pair of the original gear position is pushed out of the transmission, and then another gear position of the gear is put into operation. Before the gear shift, the clutch pedal must be depressed to interrupt the power transmission, which facilitates the disengagement of the original gear position and simultaneously synchronizes the speed of the meshing position of the new gear meshing decelerator, so that the impact upon engagement can be greatly increased. Reduce, smooth shifts.
3, to prevent overloading tanker drivetrain <br style="FONT-FAMILY:"> When the car carries out emergency braking, if there is no clutch, then the engine will be due to the rigid connection with the driveline and a sharp reduction in speed, and thus all of the movement The parts will generate a large inertial force (the value of which may be much higher than the maximum torque emitted by the engine during normal operation), causing the load on the drive train to exceed its load carrying capacity, and damage the parts. With a clutch, the relative motion that may occur between the active and driven parts of the clutch can be used to eliminate this danger. Therefore, we need clutches to limit the maximum torque that the drive train can withstand and ensure safety.
Tanker clutches can be classified as friction clutches, fluids that use liquid as a drive (ie, fluid couplings), or magnetic drives (ie, electromagnetic clutches).
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