China does not make steel belts for CVT gearboxes. What is the reason?
Many people’s intuitive impression of CVT transmission is that the CVT gearbox likes to slip. They think, “CVT is driven by a steel belt, and the steel belt represents how smooth it is, and then coated with a layer of oil, and then accelerates for sure, I believe me, the CVT transmission box. "But what they don't know is that the CVT transmission doesn't slip, and once it does it means the gearbox is scrapped, and they think about it multiple times, but it's shifting. Protector of the box. So what about a CVT transmission, can you do it without a sliding steel belt drive? In fact, this could also send us lethal navigation systems. Because the steel belt used in the CVT transmission is very special, it is impossible to make a CVT shift steel belt.
The pressure of the steel belt is very large. First, the conical disc gives the steel belt of the CVT transmission, and the pressure exerted is very large, and the CVT transmission is used by hydraulically controlling the cone to change the inner diameter. The purpose of shifting is achieved, and the other gearbox is the gear. The shift is like climbing a staircase, with obvious passages, and the CVT goes from low-speed gear to high-end, just like it is a supermarket without a ladder, very smooth. The first CVT gearbox was designed to use a belt drive, but later it was discovered that the life of the belt was not too high and then replaced with a steel belt. Let the friction between the steel belt and the conical wheel transfer the power. The greater the pressure, the steel belt and the conical wheel died. The friction area is scratched more and more.
The steel belt means not smooth. If you look closely at the structure of the CVT steel belt, you will know that it is a steel belt, which is obviously a chain combined with a small piece of iron. First invented by Bosch, the pressure steel belt consists of more than 400 steel plates from two sets of flexible rings. Bosch's steel belt must withstand a torque of 450nm, which is another important reason why the steel belt will not slip. The rack steel of the steel belt is used for durability, fatigue resistance and strength. The highest steel smelting level is in Japan, Germany, the United States, Austria, Sweden, France and other countries. There is also a certain gap between my country's special steel smelting level and these countries.
In addition, the steel belts and steel chains spread by CVT are basically in the hands of two companies, namely Bosch and Schaeffler. Due to the obstacles in obtaining patents, domestic companies hope to bypass patents to manufacture steel belts, which is extremely difficult. The two automobile companies basically monopolize CVT steel belts and steel products. Naturally, it is impossible to release patents. We can make it possible for Beidou Navigation to make it, why can't you make a small gearbox steel belt? All in all, the CVT steel belt does not have a relatively high technical difficulty that many people think, and it will not slip when used every day. Those who are moving are the ones who love slipping in the CVT transmission and can rest.