Finite element simulation of a twin-cam 16-valve cylinder structure (Q1575320)

A new twin-cam 16-valve cylinder head and block structure accompanied with several important sub-components under firing load and assembly loads has been investigated using the finite element method. The finite element analysis was executed using a commercial finite element analysis software package, MSC/NASTRAN (trademark of MacNeal-Schwendler Corporation) and the finite element modeling and pre--post processing was carried out using a popular computer-aided engineering tool, I-DEAS (trademark of Structural Dynamics Research Corporation). The physical behavior of the upstand design of gasket bead and liner, the stiffness distribution of cylinder head, the preload of cylinder head bolts, the residual insertion loads of valve guides and valve seats, and firing pressure have been thoroughly discussed. Meanwhile, the sealing and structural response analyses under assembly and firing load cases highlighted several areas of interest. Suggestions obtained from this project have been forwarded to designer successfully, for incorporation of adjustment, and to other proper areas for design evaluation.