【摘要】 本文针对耦合在冷藏车上的CO₂混合工质冷电联合循环系统，对其道路运行时的非设计性能进行分析。首先，根据道路运行参数，对内燃机的工况变化区间进行了归类划分；随后，依次建立了稳态设计模型和非设计计算模型。计算结果显示，对于整个道路工况下不同的发动机运行工况，最佳的混合工质CO₂充注比例不同；另一方面，对于整个道路运行工况下的综合性能表现，考虑非设计运行与只考虑稳态设计的系统最优混合工质CO₂充注比例相近。更多还原

【Abstract】 This study analyses off-design performance of combined cooling and power cycle with CO₂-based mixture mounted in refrigeration truck. Engine operating conditions is classified first according to the parameters of road conditions; then, thermodynamic model and off-design model are established. Results show that the best CO₂mass fractions are different for various engine operating points; on the other hand, for the comprehensive performance of the whole road condition,the best designed CO₂mass fractions are equal when considering thermodynamic design and offdesign operation.更多还原