Whether a flywheel can be used to adjust for non periodic velocity fluctuations

Yes. The reason for the non-periodic velocity fluctuation is that the change in the driving force (moment) and the resistance force (moment) acting on the machinery is non-periodic. When the driving force (moment) and the resistance force (moment) do work over a long period of time.

If it is not equal, the machine will turn faster and faster or slower.

The installation of the flywheel can not change the magnitude of the driving force (torque) or resistance (torque), and it cannot change the situation that the driving work and the resistance work are not equal, and it cannot play the role of speed regulation, so the flywheel cannot be used to adjust the non-periodic speed fluctuation.

in the crankshaft. The power take-off end, that is, connected to the gearbox.

and the side that connects the work equipment. The main function of the flywheel is to store the power stroke of the engine.

external energy and inertia.

A four-stroke engine has only one stroke of work to suction, compress, and exhaust energy from the energy stored by the flywheel. The balance is corrected, the balance of the engine mainly depends on the balance block on the shaft, and the single-cylinder machine has a special balance shaft.

Yes, the adjustment of mechanical non-periodic speed fluctuations.

1) The self-adjustment of the machine For the machinery that uses the motor as the prime mover, it can make the equivalent driving torque and the equivalent working resistance torque harmonize. That is, when the speed of the motor decreases due to med < mer, the driving torque generated by it will increase; Conversely, when the speed of the motor rises due to the MED > Mer, the driving torque generated by the motor decreases, so that the MED and MER can automatically rebalance. This performance of the electric motor is called self-tuning.

2) Governor to adjust If the prime mover of the machinery is a steam engine, steam turbine or internal combustion engine, etc., a special regulating device - a governor must be installed to adjust the non-periodic speed fluctuations of the machinery.

1) Why can the flywheel be speed-controlled? Is it possible to use a flywheel to adjust for non-periodic velocity fluctuations? Why?

The rotational inertia of the flywheel is large, so when the flywheel is installed, even though the speed of the shaft is sometimes fast and slow, it can be approximated as a uniform rotation and moment of inertia after installation.

Large, if the torque is unchanged, the change in speed is small, and the moment of inertia of the flywheel is very large compared with other parts, so it is approximately uniform and eliminates fluctuations.

A common way to adjust for periodic speed fluctuations is to add a rotating part with a large moment of inertia to the machine, the flywheel. The role of a flywheel in machinery is actually equivalent to an energy store. Due to its large moment of inertia, when the machine has surplus power, the speed of the flywheel increases slightly, and the excess energy is stored in the form of kinetic energy, so that the angular velocity of the spindle is increased.

The magnitude of the rise decreases.

When the machine fails, the speed of the flywheel decreases slightly, and the stored energy is released to make up for the lack of energy, so that the spindle angular velocity decreases by decreasing. It should be noted that the installation of the flywheel does not completely solve the periodic speed fluctuations, but only reduces the amplitude of the speed fluctuations.

It's sports, right? By jetting forward and backward, by accelerating and decelerating through the principle of recoil, the velocity is changed, and thus the radius of motion is changed, and the cycle is changed.

The reason why the flywheel can regulate the speed is to use its energy storage effect, because the flywheel has a large moment of inertia, so its speed can store or release a lot of energy as long as it changes slightly. When the machine has a surplus work, the flywheel can store the excess energy, and when there is a deficit, the flywheel can release the energy to make up for the lack of energy, so that the amplitude of the mechanical speed fluctuation is reduced.

Non-periodic speed fluctuations cannot be adjusted by a flywheel, and are usually regulated by installing a governor. Because the driving work and impedance work of the machinery without periodic speed fluctuations have been out of balance, the machinery is no longer stable operation, and the speed of the mechanical resistance file operation will continue to increase or continue to decrease, at this time, the governor must be used to adjust the energy consumption of the input machine from the outside of the machine, so the flywheel can only play the role of transformation and adjustment in the chaotic part of the machine.

If the flywheel is used to adjust the periodic speed fluctuation of the machine, is the speed non-uniformity coefficient likely to be 0, and why?

Hello dear<>

When the flywheel adjusts the mechanical periodic speed fluctuations, the speed non-uniformity coefficient cannot be 0. This is because the speed non-uniformity coefficient is an important measure of the degree of speed fluctuation, which describes the degree of periodic variation of the flywheel's speed from the average speed. In actual operation, due to the influence of manufacturing accuracy, material fatigue, mechanical wear and other factors, it is difficult for the speed of the flywheel to be completely stable, so the periodic fluctuation of its speed is inevitable.

Therefore, when the flywheel adjusts the mechanical periodic speed fluctuation, it is necessary to control the adjustment parameters and adopt the appropriate adjustment method to make the speed unevenness coefficient as small as possible, so as to ensure the stable operation of the flywheel.

The flywheel is a large mass cast iron inertia disc, which stores energy, supplies the demand of non-work stroke, drives the whole cranklink structure to cross the upper and lower dead center, ensures the uniformity of the inertia rotation of the engine crankshaft rotation and the uniformity of the output torque, and helps to overcome the compressive resistance in the cylinder during starting and maintain the continuous operation of the engine when short-term overload with the help of the inertia force of the flywheel itself.

1. Function: A part of the function input into the crankshaft in the work stroke is stored to overcome the resistance in other strokes, drive the crank connecting rod mechanism to cross the upper and lower dead center, ensure that the rotation angular speed and output torque of the crankshaft are as uniform as possible, and make it possible for the engine to overcome the overload for a short time, and at the same time transmit the power of the engine to the clutch.

2. Common injuries of flywheels: wear of flywheel teeth, broken flywheel teeth, grooves, burning scars and cracks on the surface of flywheels.

3. Overhaul of flywheel gear ring.

If there is damage to individual teeth and wear on one side of the ring gear, the ring gear can be chamfered at the other end of the gear tooth to flange it. If it exceeds 30% of the tooth length or more than four teeth are damaged consecutively, it should be replaced.

4. Replacement of flywheel ring gear: the interference amount of the new ring gear and the outer circle of the flywheel is generally millimeters, and the ring gear should be heated to 350 degrees during installation, and pressed to the stop while hot.

The gasoline engine completes 1 working cycle, the flywheel rotates 2 times, and the external work is done 1 time, and the speed of the flywheel is 600r min=10r s of the wild model, that is, 5 working cycles are completed per second, and the external work is done 5 times

So choose A

The flywheel, which regulates the speed fluctuations, is generally mounted in the position of the high-speed axis.

For the transmission with speed fluctuation, the high-speed shaft has the smallest amplitude and the highest frequency, and it is the installation position with the best working condition and the best adjustment (balance) speed of the flywheel (and flywheel shaft).

One is close to the mechanical power source, and the other is installed on a high-speed shaft.