The first reason is that we are still in the exploration stage of engine manufacturing materials and processing technology, and have not yet reached the technical requirements of top engines. We know that the blank materials of many top engines are alloy materials of various elements, and the ratio of various substances will make the performance of the manufactured engines vary greatly. However, due to the late start of China's industrial base, we lack experience in the research and development and investment of this high-end alloy material, so we can only grope forward step by step. However, many foreign enterprises only determine the various proportions of alloy materials after a long period of accumulation and precipitation, and we still have a long way to go.
The second reason is that there is a certain gap between the machining accuracy and machining technology of machine tools in our country and the top engine manufacturers in the world. Before this problem is solved, it is difficult to manufacture top engines. As we all know, the engine is a precise and reproducible machine, and it takes many processes from blank materials to a qualified finished product, and high-precision machine tools and engine processing technology are important factors to determine the quality of the engine. However, due to the late start and weak industrial base, there is a certain gap between our high-precision machine tools and foreign high-precision machine tools, and there are also shortcomings in engine processing.
The third reason is that engine design involves a large number of patented technologies. If you want to make a top-class engine, you must go through the authorization of some patent owners or independently develop new technologies. Although the principle of the engine is simple, it involves many technical reasons when it comes to small links. However, some foreign manufacturers started early in the engine field and applied for many patents. We may need to use some patents of the other side to build top-class engines, which is also an important factor that restricts us.