Thermal stress analysis of a high performance diesel engine cylinder head

Intensification of working processes in internal combustion engines require the development and improvement of methods for calculating thermal and mechanical stresses in combustion chamber parts. A refined method for determining the thermal stress state of a cylinder head is considered. A coupled problem is solved taking into account fluid dynamics in cooling cavities and temperature matching on the valve contact surfaces. The obtained results are analyzed, the stress intensity is checked for uniformity, the modifications of the structure are proposed. The suggested rational structure of the cylinder head provides a much lower level of stresses and an alternative way of liquid coolant supply.

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