A cyclic model of an irreversible Diesel heat engine is presented,in which the heat transfer irreversibility between the working fluid,and the cylinder wall during combustion and the internal irreversibility of the working fluid in the cycle is taken into account.
建立包含燃烧过程工质与气缸壁间的传热不可逆性以及循环内部不可逆性在内的狄塞尔热机循环模型,导出循环输出功率和效率的表达式,并给出循环输出功率及效率随压力比的变化曲线,进一步得到循环的优化工作区间。
At the beginning,the necessity of taking quantum effect into consideration when studying Diesel cycle is put forward,and the prospects of the cycle application to practical uses are noted.
在分析了研究狄塞尔循环时需要考虑其量子效应的必要性以及该循环在实际社会生产中的广泛应用前景后,首先给出以理想气体为工作物质的狄塞尔循环的效率表达式,然后以理想费米气体为例,根据其状态方程及其热力学性质获得以理想量子气体为工作物质的狄塞尔循环的效率表达式,通过比较得出提高实际热机效率的主要途径。
