Chinese engines are restricted by many factors such as design, materials, and processing. In terms of design, our engines have always been copied from foreign countries. We don’t have our own designers at all. We just make what others make. When others change, we follow suit. When they come out with next-generation products, we are still copying what they made ten years ago. If you don't have your own designers, you're just copying a cat and imitating a tiger. You don't have your own intellectual property rights, let alone any upgrades. Upgrading is a foreign matter and we don't understand it. After they upgrade, we can just follow it. This situation lasted for decades before it changed. In recent years, small-displacement engines with independent intellectual property rights have begun to be designed and manufactured by themselves.

The gap between China and China in terms of materials is also very obvious. The first is bearing steel. Domestic products cannot be used in the United States. Domestic rubber products cannot be used in European and American products. Domestic products such as timing chains cannot be used in foreign countries. of. This is not a bad idea. Our design concept is very advanced, but when we put it into practice, we found that domestic materials cannot keep up with our design concept. Take our commonly used saw blades as an example. One saw blade from Germany is more durable than five domestic saw blades. These are huge gaps in materials science. As for aero engines, our engine design is good, but the super-hard steel and bearings are not good enough. Therefore, a very well-designed engine will be greatly compromised in use. It is said that "I just heard it, you don't believe it, American aero engines" It can be used for 10,000 hours, the Russian one is about 4,000 to 6,000 hours, and the domestic one can only be used for 2,000 hours. Our design concept can still keep up, but due to the huge gap in materials science, the implementation can only be greatly reduced.

In terms of processing, I have seen a picture of a Chinese aircraft engine production workshop with a large row of precision machine tools. I checked the trademarks and they were all Swiss machine tools. China's precision machine tools also have a shortcoming. Many things cannot be processed manually and require precision CNC machine tools. China's precision machine tools have always been a shortcoming.

About seven years ago, I just graduated from college and went to Changchun FAW to see it. There is a workshop that produces Toyota Crown engines, a Sino-Japanese joint venture. The supervisor there told me that the production line here is the most advanced in China, but it was eliminated from Japan. I was surprised after hearing this.