Abstract
The analysis of calculation and experimental data of the temperature and thermo-stressed state of the piston in the transient processes of the engine is performed. The control functions are determined in the zone of the first and second porous rings. The results of the temperature state of the piston have been obtained taking into account certain control functions. The obtained results coincide with the experimental data with an error in the admissible mediums. A one-step change in control functions is considered in comparison with the obtained type of control functions. The influence of the type of control functions of the non-stationary heat conduction problem on the temperature and thermo-stressed state of the edge of the combustion chamber of the piston is shown. The simplified variants of control functions are offered on the basis of one-step change of the type of control functions. The estimation of the resource strength of the piston is taken into account taking into account the peculiarities of the change of simplified control functions. A simplified version of control functions is defined, which corresponds to the concept of guaranteed maintenance of the resource of the edge of the combustion chamber of the piston.
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