针对汽车发动机协同设计过程中设计人员对设计知识需求量大且存在差异性的问题，提出了面向汽车发动机设计的可拓知识推送模型。首先，建立了汽车发动机设计知识的可拓推送体系结构，给出了汽车发动机设计可拓知识推送模型的设计流程框架；然后，建立了汽车发动机设计知识的可拓基元模型，并对其进行了模糊化处理，在此基础上给出了汽车发动机设计可拓知识库的构建流程；最后，基于可拓知识库构建了汽车发动机知识推送可拓关联函数模型，进而建立了面向汽车发动机设计的可拓知识推送模型。某车企汽车发动机协同设计实例结果表明，文中提出的面向汽车发动机设计的可拓知识推送模型是有效和可行的。

A extension knowledge push model of automobile engine design was studied, aiming Aiming at at the problem that designers have a large demand and different requirements for design knowledge in the process of automobile engine collaborative design，the extension knowledge push model of automobile engine design is studied. Firstly，the extension push architecture of automobile engine design knowledge iwas established，and the design flow framework of the vehicle engine design extension knowledge push model iwas given. Then，,the extension element model of automobile engine design knowledge iwas established and fuzzified. Based on this，the construction process of the automobile engine design extension knowledge base iwas put forward. Finally，, the automobile engine knowledge push extension correlation function model was constructed based on the extension knowledge base，the automobile engine knowledge push extension correlation function model is constructed，,and then the extension knowledge push model for automobile engine design iwas established. The collaborative design results of collaborative design of thean automobile engine shows that the extension knowledge push model proposed for the automobile engine design is effective and feasible.