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膜片弹簧离合器简介外文文献翻译、中英文翻译 (2).pdf
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2022-10-28
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膜片弹簧离合器简介外文文献翻译、中英文翻译 (2).pdf膜片弹簧离合器简介外文文献翻译、中英文翻译 (2).pdf
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外文资料与中文翻译
外文资料
The diaphragm spring clutch profile
[Key word ] Diaphragm spring; nonlinear; friction plate
First, clutch overview
The so-called clutch, just as its name implies that is using "from" and "close" to deliver the
right amount of power. Regarding the manual to block of models is concerned, the clutch is an
important part of the car power system, it will have power and the engine cut off and connection
between the work. In urban road sections or complex when driving, clutch became the most
frequently used our one of the components and the clutch the stand or fall of use, directly
reflect the driving of level, also reflected the stand or fall of protection for vehicles.
Correctly use the clutch, and master the principle of clutch in special circumstances use clutch
to solve the problem, is every block if car driving manual should grasp.
Second, the dutch working principle
By friction clutch piece, shrapnaL pressure plate and power output shaft composition, decorate in
engine and transmission between, used to the engine flywheel stored in torque transfer to the
gearbox, ensure the in different driving conditions on to the drive wheels right amount of driving
force and torque, belongs to the category of powertrain.
The clutch is divided into three working state, that is, not on the clutch type all, in part on
the clutch type and a half (in half the time, clutch linkage power input and power output
terminal allow rotation difference have, that is through the rotation speed difference to
implement the transfer right amount of power), and on the clutch not by year-end.
1
When the vehicle in normal road, pressure plate is tightly on the flywheel crowded friction
slices, and the pressure plate and friction of the friction between the largest, input and output
shaft axis between remained relatively static friction, both speed and in the same.
When the car started, the driver on the clutch, the clutch pedal sports pull the pressure plate
lean back, also is the pressure plate and friction piece of separation, right now the pressure
plate and the flywheel completely not contact, are relatively friction.
The last one, also is the clutch type half state. At this time, pressure plate and friction piece
of friction small type in state. Clutch disc and the flywheel of friction between sliding
friction is state. The flywheel is greater than the speed of output shaft speed, from the
flywheel transmission out of power transfer to the gearbox. At this time between the engine and
the drive wheels is equivalent to a soft link state.
Third, the application of the dutch
Generally speaking, the clutch is in the vehicle when start and shift work; the transmission
shaft and the second shaft rotation difference between, the power of the engine and must be a
shaft after cut, synchronizer to will be a very good one axis and keep the speed of the second
shaft synchronization, block a hang into later, again through the clutch and a shaft engine power
combination to make power to continue to transmission.
1. Ensure smooth car started
Before starting car dormant, and transmission is rigid even if the engine connect of, once hung
up the file, the car will be connected to the power before suddenly suddenly blunt, not only will
cause damage to the parts, and driving force was enough to overcome before the car produced a
blunt force, make the engine speed sharply down. If the use of the clutch temporarily started the
engine and transmission separate, then the clutch gradually junction, because of the active part
of the clutch and part driven exists between the friction phenomenon, can make the clutch came
out of the torque by zero increase gradually, but the car driving force also increase gradually,
thus let the car started smoothly.
2. Easy to shift
The course of driving cars, often for a different gear transmission, in order to adapt to the
constantly changing driving conditions. If no clutch of engine and transmission will temporarily
separation, then in the power transmission gearbox meshing gears for load will not discharge is
divided, the meshing between tooth face a lot of pressure and hard to separate. Another treat
meshing gears for both circumference speed will differ and hard to mesh. Even if force their way
into meshing will have a great impact the tooth, easy attaint parts. Use the clutch make the engine
and transmission temporarily separation after the shift, the original meshing pair gear for load
unloading, meshing face the pressure between greatly decreases, and is easy to separate. And for
another couple of meshing gears, active gear and engine because separated inertia is small, adopting
appropriate shift action can make to the meshing gears circumference speed equal or close to equal,
so as to avoid or reduce the impact of the gear wheel.
3. To prevent transmission overload
7
Auto emergency braking, the sudden drop speed, and connected with the engine the transmission
system for rotary inertia, still keep original speed, this often in transmission systems produce
far outweigh the engine torque of inertia, make the transmission parts damage easily. Because the
clutch is to rely on to deliver the friction torque, so when the transmission in load than what
message friction torque, the Lord of the clutch, driven part will automatically sliding, and rose
to prevent transmission overload role.
4. Reduce the impact of torsional vibration
The engines working principle decided their output torque is not even. In power stroke, the
combustion chamber gas explosion have great impact torque, and in other stroke, but by inertia
counter drag engine. Although the engine itself to have the rotation inertia can reduce the
torsional vibration, but the rest of the impact on subsequent transmissions, and still produce
adverse effect to drive shaft. The vibration reduction and clutch spring (tangential
distribution), can significantly reduce the impact of torsional vibration of the engine bring,
and extend the life of the sliding gears.
The working principle of the clutch
The active part of the clutch and driven by surface of the friction between the role, or to use
liquid as transmission medium (hydraulic coupler), or a magnetic transmission (electromagnetic
clutch) to transfer torque, make both between can temporarily separation, and gradually joints,
in the course of transmission and allow the two part turn each other.
At present in the car is widely used in spring pressure tight friction clutch (referred to
as ,friction clutch).
The engine gave forth torque, through the flywheel and pressure plate and driven plate surface
friction role, to the driven plate. When pilots on the clutch pedal through the part of
transmission, make the diaphragm spring main drive the pressure plate back, this time with the
3
active part of the separation of the driven.
Fourth, clutch should satisfy the basic requirements
Friction clutch should be able to meet the following basic requirements:
(1) ensure that can deliver a maximum torque of the engine, and there is a certain transmission
torque force.
(2) can do separation, complete separation, engage in soft, and has good heat capacity.
(3) the driven part of the rotational inertia as low as possible some. So, in separation and
clutch shift, and transmission of the part of the input shaft connected speed is easy to change,
and reducing the impact between gear.
(4) with ease rotation direction impact, the direction of the vibration attenuation capability,
and little noise.
(5) the pressure plate of pressure and friction of the friction coefficient change small, stable
work.
(6) effortless manipulation, maintenance is convenient.
In the clutch, and an indispensable buffer device, it consists of two similar to the flywheel
disc to together, in a rectangular groove on the disk, decorate in the slots spring, in meet the
intense shock, two disks of the spring happened between each other elastic role, buffer to
external stimuli. Effective protection the engine and the clutch. In the clutch of each parts,
pressure plate spring intensity, friction piece of the friction coefficient, clutch diameter,
number and position of friction clutch is the key factor to clutch performance, the stiffness of
hydropneumatic spring, the bigger the friction piece of the friction coefficient is high, the
diameter of the clutch, the bigger the clutch performance and also more good.
4
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