一种永磁自锁型电磁气门驱动装置  

Performance Analysis of a Self-Locking Permanent Magnet Electromagnetic Valve Actuation

作　　者：陈益广[1] 郭喜彬[1] 唐明龙 张明灿[1] 

机构地区：[1]天津大学,天津300072 [2]天津蹊径动力技术有限公司,天津300457

出　　处：《微特电机》2012年第4期29-32,42,共5页Small & Special Electrical Machines

摘　　要：在传统双弹簧、双电磁铁电磁气门驱动机构的基础上,提出了一种新型电磁驱动装置,它在气门开启或关闭保持阶段由永磁体产生的电磁力实现自锁功能而线圈不必通电;解锁后,它又是一台能够四象限工作的圆筒式永磁直流直线电动机,为动子运动时提供轴向电磁力,补充由摩擦等带来的动能损失,使得气门顺利落座。对该装置建立了动态有限元分析模型,分别讨论了弹簧、静铁心、永磁体等对电磁气门驱动装置的影响,对装置进行了优化设计。对该电磁驱动装置的空载反电动势、线圈电感、电磁力等重要参数进行了深入分析和计算,得到了有益的结论。On the basis of traditional double-spring,double-solenoid electromagnetic valve actuation,a new device was designed to realize self-locking by the permanent magnet without electricity during the valve＇s maintain stage of opening or closing.After unlocking,it was a four-quadrant worked cylindrical permanent magnet DC linear motor,which provided axial electromagnetic force to make up kinetic energy losses caused by the friction,and make the valve seat successfully.A dynamic finite element analysis model was established,and the impact on the device from the spring,the static core,the permanent magnet were discussed respectively,and optimized design was implemented for the device.No-load back-EMF,coil inductance,electromagnetic force and other important parameters were analyzed and calculated in-depth for this device to get some useful conclusions.

关 键 词：电磁气门 直线电动机 电磁力 能量摄动法 

分 类 号：TM359.4[电气工程—电机]