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讨论了一种压气充分膨胀做功的无压差排气式冲击配气机构的工作原理，分析了配气效率和容积利用率，指出了效率和容积利用率的影响因素，对这种冲击配气机构的有关设计参数给出了适宜的取值范围。
The working principle of a pressure-free exhaust type air-striking valve with sufficient pressure to expand work is discussed. The gas distribution efficiency and capacity utilization rate are analyzed. The influencing factors of efficiency and capacity utilization are pointed out. The design parameters of the organization give the appropriate range of values.