发动机电磁气门驱动(EVA)机构的设计及试验  

Design and Experiment of Electromagnetic Valve Actuation for Engines

作　　者：金华民[1] 赵雨东[1] 陈似竹[1] 

机构地区：[1]清华大学汽车安全与节能国家重点试验室,北京100084

出　　处：《小型内燃机与摩托车》2007年第2期27-31,共5页Small Internal Combustion Engine and Motorcycle

基　　金：国家自然科学基金资助(项目批准号:50175055)

摘　　要：为给电磁气门驱动(Electromagnetic Valve Actuation,EVA)气门软着陆研究提供适用的平台和探索电磁气门驱动小型化设计,研制了一个装在每缸4气门汽油机缸盖上的EVA装置。采用电磁驱动的传统设计方法与CAE相结合,确定了电磁铁结构、尺寸和线圈参数,其中铁芯由E型硅钢片堆叠而成。EVA装置的总体装配关系中主要考虑了铁芯固定、衔铁运动限位、EVA与缸盖联结等。此外在EVA中布置了电磁铁磁链测量线圈、励磁线圈温度测量电阻。报告了EVA设计过程及初步的仿真和试验结果。In order to miniaturizing the Electromagnetic Valve Actuation （EVA） and to offer a platform for the research of EVA soft-landing control, a new EVA is developed, which can be installed on the cylinder head of an engine with four-valves per cylinder. The structure of the electromagnet and the parameters of the coil are determined by combining conventional design and CAE for electromagnetic actuation, and the electromagnetic core is piled up with E-shaped Si-iron plates. The coil-fastness, armature motion limit and the EVA - cylinder head connection are mainly considered in the assembly design. Furthermore, the EVA also includes an additional coil and thermo-sensors for measuring the flux and temperature of the excitation coil, respectively. The design procedure, simulation results and initial experiments are described and illustrated in this paper.

关 键 词：发动机 气门机构 电磁气门驱动 可变气门驱动 

分 类 号：TK413.4[动力工程及工程热物理—动力机械及工程] U464.134[机械工程—车辆工程]