衔铁打孔对高速电磁阀动态响应的影响

Effect of Armature Punching on Dynamic Response of High-Speed Solenoid Valve

为提高船用柴油机电控喷油系统高速电磁阀的动态响应速度,采用数值模拟的方法建立了电磁阀的数值仿真模型,通过电磁阀试验台验证了仿真模型的准确性.之后建立了电磁阀衔铁打孔的模型,研究了打孔位置、大小对电磁阀动态响应的影响,试验结果表明:在磁轭间区衔铁打孔可以优化电磁阀关闭响应,但对电磁阀的开启响应影响较小;特别地,当打孔半径为1.8 mm、打孔中心距离衔铁中心的距离为13 mm时,电磁阀开启响应时间增加了11.7%,但关闭响应时间减少了33.3%,电磁阀整体响应时间减少了13.2%.

In order to improve the dynamic response speed of high-speed solenoid valve of electronically controlled injection system of a marine diesel,a numerical simulation model of the solenoid valve was established and the modelling accuracy was verified by test data from the solenoid valve test bench.Based on the model,an armature punching simulation of the solenoid valve was conducted,and the influence of punching position and size on the dynamic response of the solenoid valve was studied.The results show that the armature punching in the inter-yoke area can increase the closing response of the solenoid valve much greater than the opening response of the valve.When the punching radius is 1.8 mm and the distance between the punching center and the armature center is 13 mm,the opening response time of the solenoid valve is increased by 11.7%,but the closing response time is reduced by 33.3%,causing a reduction of the overall response time of the solenoid valve by 13.2%.