气动汽车发动机工作循环的理论分析

城市污染和石油资源的匮乏使得人们在不断地寻求不用直接燃油或燃气的新型动力机械。气动汽车发动机就是其中的一类,它是以压缩空气、液氮或液态空气作为工作介质,可以实现零排放,是真正意义的环保动力。从理论分析的角度,对压缩空气发动机和液氮发动机的工作循环进行了分析讨论,采用不同概念计算了两者的可用能,并着重分析了膨胀初始压力和温度对输出功的影响,还探讨了液氮发动机工作循环的优化途径。

THEORETICAL ANALYSIS OF AIR POWERED ENGINE WORK CYCLE

The new type engines without the combustion process have to be researched and manufactured, especially for China, because of urban pollution and the short of fossil oil. Air powered engines, for example pressed air engine, liquid nitrogen engine and liquid air engine, are definitely zero emission engines , and have attracted the attention of government and the researcher. The theoretical analysis of the work cycle is made for the pressed air engine and liquid nitrogen engine. According to the calculation results of the available energy, the influence of the initial pressure and temperature of the expansion process to output energy is discussed, and the optimism method of the work cycle of the liquid nitrogen engine is described.