考虑热阻时发动机理论循环分析

Engine Theoretical Cycle Analysis with Heat resistance under consideration

根据发动机仅考虑热阻时 ,其混合加热循环的有限时间热力学模型 ,建立了发动机输出功率、热效率与循环参数εc,λp,ρo 之间的函数关系 ,并依此对某实际柴油机进行了计算。计算结果表明 ,有限时间热力学较之传统热力学能更深刻地反映发动机的实际循环。

On the basis of engine finite time thermodynamic model of mixed heating-up cycle in consideration of only the heat resistance, the functional relations between engine output, heat efficiency and cycle parameters ε c, λ p, ρ o have been established. According to these relations, calculation work have been carried out on a diesel engine. The calculated results show that the finite time thermodynamics can reflect engine's real cycle more profoundly than the traditional thermodynamics.