The cylinder body is strictly called the cylinder block - the crankcase! Because the upper part is one or several cylinders, the lower part is the crankcase supporting the crankshaft! These two parts are generally cast together, we usually refer to the cylinder body.
According to the different installation plane position of the cylinder body and the oil pan, it can be divided into three forms: general cylinder body, gantry cylinder body and tunnel cylinder body.
Because its working conditions are high temperature and high pressure, and the piston reciprocates in it, the friction is very large, so the cylinder block must be resistant to high temperature, corrosion resistance and wear resistance.
Generally speaking, in order to meet the above requirements, the following measures can be taken: cylinder block material, processing accuracy, structure. In terms of cooling, the cylinder block is generally water-cooled and air-cooled. Like the engine on our motorcycle is air-cooled, the general car is mainly water-cooled, but it is also equipped with a fan to assist cooling.
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