What do Yang Dong and Yuchai mean?

The same set, Yangdong and Yuchai are two engine manufacturers, Yangdong has Yangdong's exclusive accessories, and Yuchai is also. Take a four-cylinder engine as an example, there are several examples, such as 485.490.495.438+000.438+05438+00, as well as supercharged and non-supercharged. The same is true for Yuchai, except that there are more kinds of Yuchai, which are divided into 6 cylinders and 4 cylinders. Similarly, for example, 4 1 10 can also be divided into pressurized and non-pressurized. Their steel drums have different diameters, so they are unique and not universal.