Wear resistance to ensure sufficient service life of the cylinder block. The upper part of the mini compressed air cylinder body is a parallel cylinder cylinder. The lower part of the cylinder is the crankcase, which is used to install the crankshaft. Most of the cylinder block is made of cast iron or aluminum alloy. The cost of aluminum alloy cylinder block is high, but the weight is light and the cooling performance is good. The body is the framework of the engine, is the basis for the installation of various engine mechanisms and systems, and all the main parts and accessories of the engine are installed inside and outside, bearing various loads. Therefore, the body must have enough strength and stiffness. The block is mainly composed of cylinder block, crankcase, cylinder head and cylinder cushion.
