在有限元网格生成理论的基础上，探讨了柴油机零部件计算机辅助网格生成算法，并利用这些算法完成活塞、缸套等轴对称结构以及气缸盖的气道等复杂结构的全部三维有限元网格，为今后复杂结构的三维有限元计算中的网格生成提供了新的方法 Based on the theory of finite element mesh generation, the computer-aided mesh generation algorithm of diesel engine parts is discussed. And all the three-dimensional finite element methods of the piston and cylinder liner equiaxed structure and the airway of the cylinder head are completed by these algorithms The grid provides a new method for grid generation in the future three-dimensional finite element calculation of complex structures