Everyday driving knows that as a core component of a car, the engine manufacturing process is complicated, and the requirements for precision are very high. Usually it is a small difference, and even a master like Honda will inevitably come up with various The kind of scorpion, the throttle is a painful lesson. The engines made by the 100-year-old stores like Volkswagen and Ford are not perfect. The second generation ea888 burns all kinds of engine oil, not to mention the domestic manufacturers who have started late for more than half a century. Over.
At present, most of the independent brands are taking the path of reverse research and development. First, find a foreign prototype machine, disassemble and decompose, and then form a self-made thing according to the gourd painting. Then, the name is developed independently. There is a common problem in reverse research and development. Is that the design principle or the idea of the prototype is unclear, can't be eaten, don't understand why others are designed like this, it is inevitable that the problem is not rough and not refined by simply relying on the tape measure. The engine is not a seat bench, and the difference is not bad. Imagine. How can an engine with an internal structure of coarse ore be not a problem, so durability will not be discussed.
However, we can't neglect the progress and achievements of domestic engines. After more than ten years of accumulation, our own brands have some of their own thinking, like BYD's 2.0t, Geely's 1.8t, and Harvard's 2.0t have quite good stability. Sex. In terms of performance parameters, it has also been aligned with foreign advanced levels, and the technical level is becoming more and more mainstream. Turbocharging, direct injection in cylinders, variable timing valves, etc. are also used in pure fire.
When it comes to stability, I have to say that China-made light Chery is completely relying on forward R&D. It spends huge sums of money to unite the backbone of many colleges and universities. From the beginning, it has developed the acteco series step by step and exported it to foreign countries. Chery is also the only one at present. A manufacturer who dares to guarantee the engine for one million kilometers, this confidence is more due to strict control of the production process, a deep understanding of the engine principle, and a long-term offline test and loading of kilometers. Road test, absolute domestic conscience.
Compared with the engine, the domestic gearbox technology is even more urgent. Shengrui is not easy to come up with a 8at, but the experience is quite general, not to mention the various setbacks, abnormal sounds, and double clutches. There is almost no stability at all. It seems that domestic brands do have a long way to go.
