Ensure smooth start of the car
that is a primary function of the clutch.
In front of the car started, natural to starting the engine.
And when the car started, the car is completely stationary states gradually accelerated.
If the drive train (
It is linked to the whole car)
And engine to contact rigidity, hang up a gear, transmission, cars will be suddenly rushed forward, but it does not start.
This is because when the car from static to forward, have a great inertia force, resistance moment of engine caused great.
Under the effect of the inertia torque, the engine speed has fallen sharply to the lowest stable speed in transient time (
General 300 -
The following, the engine is shut down and cannot work, of course, car can't start.
Therefore, we need help from the clutch.
Before the start after the engine starting, the car, the driver on the clutch pedal, clutch, make the engine and transmission system off, then hang up transmission gear, then gradually the clutch pedal, clutch joint gradually.
Stuck in the process of joint, the engine torque increases gradually, therefore, should be gradually on the accelerating pedal at the same time, the gradual increase of engine fuel supply, keep the engine speed has always been on the lowest stable speed, without stalling.
At the same time, due to the clutch joint close degree increases gradually, the engine by transmission to drive the wheel torque will increase gradually, the traction enough to overcome the initial resistance, the car as a start and gradually accelerate from 0 2, for ensuring the smooth transmission shift when 2: achieve a smooth shift in the process of the car, in order to adapt to changing conditions, gear drive train regularly to change different work.
Realize the shift of the gear transmission, general 6 gear or other shift, make the original launch of a gear pair with gear, make another gear gear pair into the work.
Must before the shift on the clutch pedal, interrupt power transmission, easy to make the original gear meshing pair off, at the same time make the speed of new gear meshing pair meshing area gradually incline to synchronization, so enter the meshing impact can be greatly reduced, achieve a smooth shift.
3, to prevent the transmission of overload when vehicle during emergency braking, if there is no clutch, the engine will sharply reduce the speed by and drivetrain rigid connection, thus all moving parts will produce very big inertia moment (
Its value may be considerably more than the engine work normally when the maximum torque) made by
Of the drive system, more than its load carrying capacity, and make the parts damaged.
Had the clutch, can rely on the clutch active part and the driven part of relative motion between to eliminate this danger.
Therefore, we need to limit the transmission of the clutch on the maximum torque, to ensure safety.
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