中文摘要：

一个 bottoming 周期系统基于公司 ₂ Brayton 周期被建议恢复引擎用尽热。它的表演与在五个典型引擎条件下面的常规空气 Brayton 周期相比。结果证明那个公司 ₂ Brayton 周期证明以系统网络输出力量，热效率和恢复效率比空气 Brayton 周期优异。在大多数情况中，公司 ₂ Brayton 周期的恢复效率能比 9% 高，系统高在引擎有更好的表演操作负担。热效率能在因此，百分之百操作负担下面象 24.83% 一样大 14.86 kW 的网产量力量被获得。

英文摘要：

A bottoming cycle system based on CO2 Brayton cycle is proposed to recover the engine exhaust heat. Its performance is compared with the conventional air Brayton cycle under five typical engine conditions. The results show that CO2 Brayton cycle proves to be superior to the air Brayton cycle in terms of the system net output power, thermal efficiency and recovery efficiency. In most cases, the recovery efficiency of CO2 Brayton cycle can be higher than 9% and the system has a better performance at the engine＇s high operating load, The thermal efficiency can be as large as 24.83% under 100% olaerating load, accordingly, the net outnut nower of 14.86 kW in nhtnined