What are the differences between cast iron engines and aluminum alloy engines?

1 Answers
ReaganDella
07/30/25 1:10am
Cast iron engines have lower manufacturing process requirements compared to aluminum alloy engines, but this does not mean that cast iron engines are inferior to aluminum alloy engines. In fact, both types of engines have their own advantages. The following is an introduction to the two types of engines: 1. Cast iron engines have lower manufacturing technical requirements and mature processes. In actual operation, cast iron engines can withstand high-temperature and high-pressure working environments, but they are heavier and have poorer heat dissipation compared to aluminum alloy engines. 2. Aluminum alloy engines are lighter in weight, effectively reducing the engine's self-weight, and have better heat dissipation. However, their manufacturing process requirements are slightly higher, and the manufacturing cost is more expensive than that of cast iron engines. Additionally, aluminum alloy engines are prone to deformation when heated during operation, which can lead to increased clearance between the cylinder wall and piston after prolonged use, resulting in significant power leakage.
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