农业机械学报2013，Vol.44Issue(1)：21-26,6.DOI:10.6041/j.issn.1000-1298.2013.01.005
发动机喷油器用电磁直线执行器动态建模与试验
Modeling and Experiment of Electromagnetic Linear Actuator for Fuel Injector of Engine
摘要
Abstract
Based on the theory of permanent magnet latching, an electromagnetic linear actuator (EMLA) for a fuel injector of engine was presented. Using method of equivalent magnetic circuit, the dynamic model of the EMLA was established. Eddy current, dimensions of components, and fringing effect were taken into account in modeling. Using PWM method and H-bridge driver circuit, the prototype of the EMLA was tested on the test bed. The experimental and simulated data agreed well and the model was validated. The results show that under 0. 5 MPa supply pressure, the transition time of the EMLA was 1.57 ms dver 0. 25 mm stroke. The EMLA had good transient characteristics and met the working requirement of the fuel injector. Furthermore, because of no holding current, the fuel economy of engine was improved.关键词
汽油发动机/电控喷油器/电磁直线执行器Key words
Gasoline engine Electronic control injector Electromagnetic linear actuator分类
交通工程引用本文复制引用
时岩,常思勤..发动机喷油器用电磁直线执行器动态建模与试验[J].农业机械学报,2013,44(1):21-26,6.基金项目
国家自然科学基金资助项目(50876043)和江苏省科技支撑计划资助项目(BE2008133) （50876043）
