The thermodynamic analysis of intra-cylinder processes of piston engine as one of means defining its structural design
Thermodynamic analysis of intra-cylinder processes in piston engine as means of selecting its structural design. Enthalpy is considered as thermodynamic potential, as well as the heat content of the working medium determining the latent energy which opens the possibility of converting internal energy into heat, and further - into work, within the conditions of a piston engine. Communication of basic types of works and quantity of heat with the internal energy of the working medium has been provided. The results of the analysis of the transformation of heat as completely into the internal energy and partially into the external part of the work on the example of the theoretical thermodynamic cycle Trinkler-Sabathe are shown. The concepts of "total gas temperature" and "average indicated temperature" as determinants of possible expansion of gas performance are introduced. Thermodynamic analysis of the state of the working medium in the cylinder, estimation of the average temperature of the gas during the cycle enable make an assessment of the prospects of the performance of a working gas, which allows to predict the possibility of increasing machine efficiency through various constructive innovations.