The difference between aluminum cylinders and pig iron cylinders:
The obvious difference between the two is the difference in weight and the associated direction of action. Pig iron: good heat resistance, not easy to deformation. Pig iron engine wear, easy maintenance, low cost. Aluminum alloy: light weight, fast heat exhaust, light weight aluminum alloy engine, can effectively relieve the weight of the engine, to achieve the purpose of relative fuel saving, commonly used in smc thin cylinder.
The materials commonly used in engines are divided into two kinds. One is made of aluminum alloy and the other is made of pig iron.
Aluminum alloy advantage:The net weight of the cylinder is lighter and better heat exhaust. The advantage of lighter weight leads to more flexible handling. Theoretically, the lighter weight will lead to lower fuel consumption. The advantage on pig iron block is thinner, that is, stronger. If the pig iron engine block is rebuilt with demanding characteristics, it is definitely better than aluminum alloy.
Aluminum has excellent heat dissipation performance, which pig iron does not have. And pig iron: it is particularly strong resistance to deformation, finger cylinder assembly of pig iron heat consumption carrying capacity is particularly large, is not the aluminum alloy material. So now some high-end car brands, especially turbocharged engines, still apply pig iron as its engine block material. In order to be heat resistant and have high resistance to deformation.