Abstract: In view of validity, systematicness and integrity issues of computer aided engineering(CAE) applications in the traditional development process of the diesel exhaust gas recirculation(EGR) system, in order to upgrade development capacity of engine manufactures, research has been done on the application of development process with CAE. Based on redefining the CAE elements of engine, taking “Engine-Subsystem-Component” as developing mode, EGR development process based on CAE technologies is established. The results indicate that the EGR system determined by simulation is feasible. NOx emission reduced by about 20% without obviously affecting the power and economy performance, meeting the development requirements. The development process based on CAE can improve development cycles, costs and quality, which realizes the systematicness, completeness and integrity, providing a new method for effective development of the EGR system.

Key words: Computer aided engineering(CAE) technology, Development process, Diesel engine, Exhaust gas recirculation(EGR)