4气门柴油机缸内气流运动的模拟计算

The Calculation of In-Cylinder Air Motion for 4-Valve DI Engine

选用大型程序KIVA—Ⅱ ,结合实测边界条件 ,计算了 4气门柴油机的缸内流场 ,并与测试结果进行了比较。指出用KIVA—Ⅱ计算 4气门柴油机的缸内流场时 ,应将Bessel函数的阶数升至

Using a large program KIVA—Ⅱand experimental data,the paper calculates the air motion in the cylinder for 4 valve diesel engines,and shows the user should change the Bessel function defined in the KIVA—Ⅱ when calculating the air motion in 4 valve engines.