The aim of the present study is to model the steady heat transfer of the engine polyamide intake manifold. Under the condition of a steady flow, the intake manifold wall temperature and the intake air temperature were measured to examine the effect of the thermal boundary layer on the heat transfer. Experimental data is used to generate the numerical model of airflow simulation through the intake manifold.

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This paper presents a mathematical model to determine the preventive maintenance cycles of shears type mechanisms assigned to cut metallurgical products. This model takes into account stochastic factors which influence the failure rates and working life of an entity. The target of this paper is to determine the optimal graphic of planned maintenance activities either to reduce the related costs.

No abstract