请教二冲程汽油机扫气口面积的问题

aimanu

我刚开始学GTPOWER，请问高手二冲程汽油机建模的时候，它的扫气口面积是说得扫气口平行气缸壁的那个面还是说从曲轴箱到气缸里通道的最小通过面积呢？谢谢

imjacksong

不明白你说得问题。曲轴箱到气缸的通道通过管路和阀模拟，气缸到排气通过阀和管路模拟。

aimanu

在表示扫气口的阀参数里不是有运动规律吗，那个对应于曲轴转角的扫气口的打开面积是说的哪个面积 ？

imjacksong

This object defines the characteristics of a ported valve for two-stroke engines including valve area and flow coefficients. The code calculates the flow through the valves in each direction using "effective area" which is the product of the actual area and the discharge coefficient, CD. The user may model the flow properly in a ported valve by either: 1) entering the actual geometric area of the port in the area array and specifying the two discharge coefficients; or 2) entering the effective area in the area array and setting the discharge coefficients to 1.