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本方法是将Baumann法予以发展,并将透平、压气机特性考虑在内的一种变压增压方式柴油机的增压性能计算法。方法的实质是,在给出柴油机、透平、压气机的基本参数及特性,给出柴油机负荷以及缸内受热率之前提下,求算每度曲轴转角下柴油机与透平平衡时的发动机各部分的状态参数值。计算式因含有无理式的联立方程,求出最后解,要多次反复,为此使用了电子计算机。文内以两个计算实例说明,缸内循环的计算值与实测值完全一致,排气管内的状态变化虽在定量上有差别,但在定性上还是完全一致。本方法对中冷器未予考虑,进气温度作为工作数据给出。至于用本方法求解部分负荷的性能值,文内尚未论述。此外,作者指出,本方法尚有部分需加改进之处,拟做进一步研究。值得指出的是,文内提出了“排气管效率η_p”这样一个概念,读者在讨论部分中可见到作者对此所做之解释。
This method is to develop the Baumann method, and the turbocharging, compressor characteristics, including a pressurized supercharged diesel engine pressurization performance calculation. The essence of the method is that given the basic parameters and characteristics of diesel engine, turbine and compressor, given the load of the diesel engine and the heat rate in the cylinder, the engine at the crank angle of the diesel engine and the turbine Part of the state parameter value. Calculations Because of the simultaneous equations with irrational equations, find the final solution, repeated many times, for which the use of electronic computers. In the paper, two calculation examples are given to illustrate that the calculated value of cylinder cycle is exactly the same as the measured value. Although there are differences in the state changes in the exhaust pipe, they are still qualitatively identical. The method does not take into account the intercooler, intake air temperature is given as the working data. As far as the method of solving the partial load performance value, the article has not yet discussed. In addition, the author points out that there is still some room for improvement in this method, which is to be further studied. It is worth noting that the article put forward a concept such as “exhaust pipe efficiency η_p ”, the reader can see in the discussion section of the author’s explanation.