The Research of Dimensional Design “2MM Project” System and the Key Role in the Self-owned Vehicle Platform

The related concepts of dimensional design “2MM” engineering of the automotive products are introduced. The dimensional design “2MM” engineering is the foundation of vehicle dimensional manufacturing “2MM” project. This paper introduces the route and method of vehicle dimensional manufacturing “2MM” project in the auto product design process under the current developmental model of Chang An company and the functional attributes of vehicle dimension; it also emphasizes the key role that played by vehicle dimensional design “2MM” engineering in the own brand car company for building the car platform, finally through a series of problems, cause the related thinking, for example system construction, personnel training, in the field of vehicle dimensional development in the own brand car company.