In fact, before a nitrogen shock absorber is dissected, I think nitrogen gas in the nitrogen gas shock tube is used for heat dissipation. However, the R & D nitrogen shock tube is not a nitrogen heat dissipation you think, it's not a tube of nitrogen, it's just a "finishing touch"!
When it comes to ordinary shock absorbers or shock absorbers, many people do not understand it, and even many of them do not understand it. In fact, the working principle of the shock absorber is very simple, which is to weaken and suppress the movement of the spring. The so-called weakening refers to the movement of the spring and restraining the movement of the spring that affects the body posture of the body; therefore, the fundamental meaning of the shock absorber is that the spring does not allow the spring to make a bad attitude to the vehicle's posture. Love.
In fact, both the nitrogen absorber and the ordinary shock absorber have the same basic components in the shock absorber, damping oil and gas. In order to give you a deeper understanding of the working principle of nitrogen damper, we need to explain the traditional shock absorber first.
Traditional shock absorbers, which we usually call a mixture of oil and gas, have both damping oil and gas in the shock tube, and the oil and gas are in one chamber. When the shock absorber is under pressure, the oil compressed gas is under pressure, and conversely, it is springback, of course, the layout of the oil path is more precise than I said, but the actual original The reason is to use oil to compress the gas.
What about the nitrogen shock? Is it oil compressed gas, too? The answer is yes. The principle can be said to be exactly the same. It is the basic function of the shock tube by compressing gas with damping oil. What is the difference between the internal design of the nitrogen shock tube and the traditional shock tube? In fact, developers prefer to call nitrogen shock absorbers as oil and gas separation shock absorbers. Traditionally, mixing is the separation. What is the advantage of separation compared to mixing?
In fact, the key to these problems lies in a question, that is why oil and gas are needed in the shock tube, the gas is used to compress the gas, and the oil is used to compress the gas, so is it good to compress the gas directly with the piston? Please think about it. Let's recall a previous article. What should a good shock absorber do? The bottom of the rider can withstand the floating wheel, which is faster than Thai boxing and is more flexible than Tai Chi. Right? So the compression and release of gas can react faster than Thai boxing, but can it do better than Taijiquan? Viscous oil can act more smoothly than Taiji, but can its reaction be as fast as that of Thai boxing? So it is the key to reconcile a variety of antonyms with a shock tube, that is, oil and gas coordination, oil to control the gas pressure, in the use of high-pressure gas to make up the velocity of oil movement.
For example, you know, let's read the movement of a vehicle flying to the ground: first, after the "takeoff", the shock tube needs to be swiftly put down to keep the wheel as far as possible to keep the tire on the ground, right? What about when the car is "landing"? The wheel needs the wheel to quickly "suck" the ground surface and then slow down, the closer to the limit, the slower the press speed is, and then the rebound from fast to slow to the normal stroke to prepare for the next shock.
We are analyzing the internal working state of the shock tube in the whole process. First, the first stage, take off stage, completely release all the stroke of the shock tube and let the wheel put into the earth. In this process, the oil is not compressed completely, but the gas compresses the oil, and the process of releasing the shock tube should be tested. Let go, not the Duang, but the viscosity of the oil makes the gas push the velocity of the shock tube slow, and the pressure of the gas is constantly decreasing and the thrust is getting smaller and smaller. If it happens to be on the ground, this small resistance can stop the shock tube immediately, keep the stroke, or quickly turn to the bottom pressure. The state ensures that the car will not jump two times; in the second stage, that is, the landing stage, the inner of the shock tube is the oil compressed gas, what are the characteristics of the gas? The more pressure it is, the less easy it will be compressed, so the closer it is to the limit stroke of the shock tube, the more difficult it is to compress the gas, thus ensuring that the compression process is more and more slow, and that the high pressure gas will quickly slowly open a small section of the shock tube after the compression is completed, until the pressure is not enough to push the whole shock tube. The shock absorber can quickly restore calm. This is the whole process of oil and gas coordination, whether it is oil gas separation or oil and gas mixing, the whole process is completely consistent, but some details are not expanded, for example, the valve opening of the oil movement can control the speed of down pressure and rebound. Under the pressure and springback allocation of two oil circuits, they can not interfere with each other and realize the unequal speed regulation of downward pressure springback. And so on, but the principle is the principle. Now, one of the problems we need to study is the ability of oil and gas mixture to avoid shock and oil and gas separation to complete the above work.
Generally speaking, the one chamber of oil and gas coexistence is unreasonable, because in the process of rapid mixing and compressing of oil and gas mixtures, there will be a large number of tiny bubbles into the oil, resulting in the emulsification of the oil, and the gas mixture is compressed in the process of compression of the shock tube, and the volume change of the oil is very small. So the small bubbles that are mixed in the oil are hard to be compressed, but the remaining gas that is not fused into the oil is compressed and released, which will lead to less and less compressed gas, and the volume of the oil is more.
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