Analysis of Reason Causing Sand Burning-on Defect at Scavenging Port of Cylinder Liner of A Heavy Marine Diesel Engine 大功率船用柴油机缸套扫气口粘砂原因分析
The principle of scavenging port designing is to minimize short circuit losses resulting from the fresh air flowing to the scavenging port. 扫气道的设计原则是尽可能减少新鲜充量向排气口的短路损失。
Subsequently, the geometrical parameters of the scavenging port and exhaust port were evaluated by introducing the new mathematical models and the traditional statistical solutions of the specific time area. 然后,用所建的数学模型以及传统二冲程内燃机气口比时面值的统计规律,预测排气口和扫气口的几何参数。
When the speed is big, it is good to have a certain angle of elevation, on the contrary, it need not have the angle of elevation; it is suitable for the radial angle of inclination of the scavenging port to be 20 ° or so. 当转速较大时适合有一定的仰角,反之,则不必有仰角;扫气口的径向倾斜角设计在20°左右比较合适。