G0700206 Cantera/MATLAB^[○!R]を利用したエンジン熱効率の0次元解析
詳細
An in-cylinder gas model is developed to analyze thermal efficiency of a conventional diesel engine using open source chemical kinetics software, Cantera, working on MATLAB^[○!R]. CHEMKIN-formatted thermodynamic properties of a diesel surrogate are implemented to perform a highly accurate cycle analysis. Thermodynamic factors resulting in the difference between a practical diesel engine cycle and the air standard Otto cycle are then quantitatively estimated: loss due to specific heat of 8.0%pt, chemical equilibrium loss of 0.4%pt, evaporation loss of 1.0%pt, time loss of 4.2%pt, heat loss of 5.6%pt, pumping loss of 2.3%pt and friction loss of 4.7%pt. In addition, a temporal pattern of reaction rate of progress is optimized for brake thermal efficiency on Wiebe-function basis under adiabatic condition.
