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根据气缸排气过程的特定情况及16V280ZJA型柴油机的工作循环模拟计算结果，指出在缸内排气过程中采用容积法的某些不足：未考虑缸内气体功能的影响、缸内气体流动与管内稳定流动的差别及排气模型气体流通进口截面的选择对计算流量的影响。考虑到这些因素，作者对气缸简图及排气模型进行一些修正，把气体动能对排气流量的影响考虑进去并重新选择气体流通进口截面，建立了一个新的排气模型。
According to the specific circumstances of cylinder exhaust process and 16V280ZJA diesel engine working cycle simulation results indicate that some of the inadequacies of the volumetric method in the exhaust process of the cylinder are not considered: the function of the cylinder gas is not considered, The Difference between Stable Flows and the Influence of the Selection of Gas Crossing Section of Exhaust Model on Computational Flow. Taking these factors into account, the author makes some amendments to the cylinder diagram and exhaust model to take into account the influence of kinetic energy on the exhaust gas flow rate and re-select the inlet section of the gas flow to establish a new exhaust model.