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1.绪言在做二冲程汽油机气缸内空气流动的分析时,往往依据扫、排气孔的相同压力差来换算出通过一个气孔的相同的重量流量,并还广泛地进行研究扫、排气孔的等效面积。可是,在实际汽缸内的空气流动,因受扫气状态、活塞位置、活塞运动的影响而很复杂。因此,本研究不但注意到了扫、排气孔和扫、排气孔等效面积的流量系数,而且还测量、比较和分析了静态与动态时的流量系数。
1. INTRODUCTION In the analysis of the air flow in a two-stroke gasoline engine cylinder, the same weight flow through one of the blow holes is often calculated based on the same pressure difference between sweep and blow holes, and the sweep, vent The equivalent area. However, the air flow in the actual cylinder is complicated by the influence of scavenging conditions, piston position and piston movement. Therefore, this study not only noticed the flow coefficient of sweep, vent and sweep, vent equivalent area, but also measured, compared and analyzed the static and dynamic flow coefficient.