What about the engine material, iron and aluminum, please?
Generally speaking, steel will think of good toughness. Cast iron, as expected, usually with high stiffness. Used as engine block, aluminum alloy, cast iron, and so on, the strength can be guaranteed. The more high-grade engines, the more aluminum alloy. Because the aluminum alloy cost is high, the processing difficulty is big, uses in the low-grade vehicle is quite few.
What materials and technologies are used in an engine are obtained by considering the market position, technical strength, production cost and other factors.
Therefore, the most important advantage of aluminum alloy engine is light weight, light weight, and the efficiency of the engine will be greatly improved. This is the most direct advantage and the most important consideration in the use of aluminum alloys. The second consideration is probably about heat dissipation, which allows the engine to withstand extreme work conditions.
Even more advanced cars, even the body skeleton are aluminum alloy, but because of the high cost and difficult processing, only a handful of top sports car adoption. As for heat transfer characteristics, aluminum alloy is superior to cast iron. But because the main means is the engine cooling water, although iron heat slightly worse than Aluminum Alloy, but has no difference to affect the engine performance, in the design, the designer will also take into account this problem, for example, will limit the maximum speed of the engine produces a large number of students so as to avoid excessive heat can not be quickly derived but did not generate the necessary trouble.
