The Effects of Thermochemical Dissociation in Ice Heat Release Evaluation

Thermochemical dissociation affects the thermodynamics properties of the gases that are present in the products in the cylinder and in the exhaust of an Internal Combustion Engine. At temperature levels greater than the frozen one, the thermodynamics properties of the mixture are different from those evaluated for a “frozen composition” mixture. The most accurate ICE heat release models evaluate the CNHR and the ROHR on the basis of thermodynamic properties of the species present in cylinder gases during the combustion process. In the current paper the authors have evaluated the effects of thermochemical dissociation on ICE heat release.