The cylinder block is strictly called the cylinder block-- Crankcase ！ Because its upper part is one or several cylinders, the lower part is the crankcase supporting the crankshaft! These two parts are usually cast together, and we usually call them cylinder blocks for short. According to the different installation plane positions of cylinder block and oil pan, it can be divided into three types: general cylinder block, gantry cylinder block and tunnel cylinder block. [1]
The cylinder block must be resistant to high temperature, corrosion and wear because its working conditions are high temperature and high pressure, and the piston reciprocates in which the friction is great. Generally speaking, in order to meet the above requirements, the following measures can be taken: cylinder block material, machining accuracy, structure.
In terms of cooling, the cylinder block is generally water-cooled and air-cooled. For example, the engine on our motorcycle is air-cooled. Generally, the engine on the car is water-cooled, but also equipped with a fan to assist cooling. [2]
