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Engine is trade data platformthe heart and core component of a car, and its performance and Reliability greatly affects the performance and service life of the car. The process of engine manufacturing needs to go through multiple steps, including design, casting, processing, assembly and other links. The following will introduce the detailed process of engine manufacturing. I. The design of the engine is the first step in the whole manufacturing process. The purpose of the design is to determine the volume, power, fuel consumption, application and other technical indicators of the engine. Designers need to follow the purpose, performance and market demand of the vehicle.Find equal factors to determine the parameters such as the engine model, exhaust volume and working principle, and carry out principled research and calculation, and formulate the structural scheme of the engine and the design drawings of parts. II. Casting is one of the core links in engine manufacturing. The main process of casting is the four steps of casting, melting, pouring and cooling. Among them, the casting mold is the most critical part. The shape and size of the casting mold determine the processing difficulty and process requirements of the parts in the subsequent process. Melting refers to melting the required materials to a certain temperature to facilitate pouring in subsequent processes. Pouring is to pour the melt into the casting mold and let it cool and form. Finally, by cooling, the casting parts can be taken out of the mold. The casting process is very important to the quality of parts. It is necessary to select materials, control the melting temperature and pouring speed of materials, etc.III. Processing refers to the process of processing and molding the cast blanks. Depending on the shape and size of the parts, different machine tools and cutting tools need to be used for processing. Common processing methods include turning, milling, drilling, grinding, etc. These processing processes need to strictly control the process parameters to ensure the accuracy and quality of parts. IV. Surface treatment refers to the coating or plating treatment of the surface of the parts. These treatments are mainly to increase the wear resistance and corrosion resistance of parts, and reduce the friction of parts. Coating and plating treatment can be completed by third-party factories or by themselves in the manufacturing workshop. V. Assembly is the process of combining the parts after processing and surface treatment into a complete engine according to the design requirements. The installation position and related marks of each component need to be closely docked to ensure the normal operation of its interaction.In addition, it is necessary to test lubrication, heat dissipation, pressure and other aspects to ensure that the engine can work normally and meet the design requirements. VI. Commissioning is the process of testing, testing and debugging the engine after the splicing is completed. Debugging includes two stages: performance test and life test. The performance test is mainly to test its transient response, fuel consumption rate, emission performance and other indicators under the engine load; the life test is carried out by strengthening the load, simulating the service life and other ways to evaluate the service life and reliability of the engine. VII. Quality inspection Quality inspection is the last link in the whole manufacturing process. Inspection includes appearance inspection, size inspection, material composition inspection, mechanical property inspection and performance testing. If it is found that there is a quality problem with the engine, the relevant parts need to be repaired or rebuilt until they meet the product standard requirements before they can be sold from the factory.The summary above is the detailed process of engine manufacturing, including design, casting, processing, surface treatment, assembly, commissioning and quality inspection. Each link needs to be carried out strictly according to the process to ensure that the quality and service life of the engine meet the requirements.

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