The properties sought in a multi-layer steel cylinder head gasket include cylinder pressure sealing and fatigue strength in order for there to be no damage while the engine is in operation. Diesel engines, in particular, have high cylinder pressure and a high axial tension by the cylinder head bolt demanding severe environment to the gaskets. As engine performance is enhanced, there are cases when cracks develop in the gasket plate, necessitating countermeasures. The cause of cracking in a flat center plate, in particular, has not yet been explained, and no method for evaluation had previously existed. Three-dimensional non-linear finite element calculation was therefore performed to verify the cause. First, a static pressurization rig test was used and the amount of strain was measured to confirm the validity of the calculations. Then the same method of calculation was used to verify the distribution of strain, with a focus on the plate position. This showed that strain occurred in the direction of cracking depending on the relative positions of the plates. Estimates were then calculated using a model equivalent to an actual engine endurance test. These yielded high strain, indicating that the cause of cracking was a gap of plate position. The method of calculation created here showed that when the center plate thickness was varied, increasing that thickness was effective in reducing strain. Optimization of the center plate thickness made it possible to complete endurance testing of an actual engine without cracking.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Strength Analysis of a Cylinder Head Gasket Using Computer Simulation


    Additional title:

    Sae Int. J. Mater. Manf
    Sae International Journal of Materials and Manufacturing


    Contributors:

    Conference:

    SAE World Congress & Exhibition ; 2009



    Publication date :

    2009-04-20


    Size :

    7 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Strength analysis of a cylinder head gasket using computer simulation

    Sato,K. / Nishiyama,T. / Murakami,O. et al. | Automotive engineering | 2009


    Cylinder Head Gasket Simulation in Finite Element Analysis

    Hebert, Colin / Webster, William | SAE Technical Papers | 1998


    Cylinder head gasket simulation in finite element analysis

    Herbert,C. / Webster,W. / Ricardo Consulting,GB et al. | Automotive engineering | 1998


    Cylinder head gasket development

    Tronel, T. / Whitham, G. P. D. | British Library Online Contents | 1996


    Cylinder Head Gasket Simulation - A Development Tool

    Guizzo, Antonio C. | SAE Technical Papers | 1992