动圈式电磁驱动气门的分析与设计  

Analysis and Design of a Moving-coil Electromagnetic Valve Actuator

作　　者：刘梁[1] 常思勤[1] 

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《汽车工程》2009年第8期733-736,共4页Automotive Engineering

基　　金：国家863计划项目(2006AA05Z236);国家自然科学基金项目(50876043)资助

摘　　要：提出了一种新的发动机动圈式电磁驱动气门的技术方案,基于有限元方法对其电磁场特性进行分析,计算了气隙磁通密度和电磁力特性,讨论了不同永磁体排列方式和电枢反应对气隙磁通密度的影响。从运动学角度分析了快速响应的设计要求,以运动部件加速度最大为目标对电磁场分布进行了优化设计。研制了电磁驱动气门样件,并通过测试其电磁力特性,验证了计算结果。A novel moving coil electromagnetic valve actuator （MC -EMV） is presented. Its electromag- netic field characteristics are analyzed by finite element method with air gap flux density and electromagnetic force characteristics calculated. The effects of permanent magnet array and armature reaction on air gap flux density are discussed. The design requirements of fast response are analyzed in light of kinematics, and the electromagnetic field is optimized aiming at maximizing the acceleration of moving components. The prototype of MC - EMV is trialproduced, and the calculation results are validated by the test of its magnetic force characteristics.

关 键 词：电磁驱动气门 动圈 电磁场 有限元法 

分 类 号：U464[机械工程—车辆工程]