Research on Top-Down Design Method of Internal Combustion Engine based on NX Future Development

With the development of internal combustion engine, how to design complicated parts of internal combustion engine quickly and effectively is of great significance. In view of the rapid prototyping design research of internal combustion engine parts, we firstly formulate a prototype model design criterion. From the sketch parameterization, shape feature parameterization and assembly parameterization design ideas, we propose a parameterized model construction method in order to meet the requirements of model accuracy and extensibility in the top-down design of internal combustion engine. Then according to the performance of internal combustion engine and the structure characteristics of main parts, we develop a system design process and a part design process. At the same time, we put forward a top-down design platform for internal combustion engine, analyse platform development functions, platform development framework and platform development process. Finally accomplishing the prototype of internal combustion engine based on NX development and a complete development technology system of internal combustion engine platform so as to improve the success rate of internal combustion engine design.