Engine assembly technology

The invention discloses an engine assembly technology. The engine assembly technology comprise the following steps that S1, a plurality of cylinder sleeves are sequentially pressed; S2, a plurality of piston connection assemblies are sequentially pushed into the corresponding cylinder sleeves with preset distances; S3, an engine cylinder block is turned; S4, a bent axle assembly is arranged on the engine cylinder block so that each piston connection rod assembly can be connected with the bent axle assembly. According to the engine assembly technology, the piston connection rod assembly is arranged firstly, the bent axle assembly is arranged then, the engine cylinder block is turned once in the technology, a bent axle does not need to be rotated, assembly efficiency of an engine is improved, the length of a production line of the engine assembly technology is obviously shortened, the number of set positions and the number of persons are reduced, and manpower cost is lowered. In addition, the production line of the engine assembly technology occupies small space.