电控喷油器关键结构参数的匹配优化研究  

Optimal design of the key structural parameters in an electronic fuel injector

作　　者：张贺鲲 张振东[1] 谢乃流[1] 

机构地区：[1]上海理工大学汽车工程研究所,上海200093

出　　处：《机电工程》2016年第6期739-743,759,共6页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51275309)

摘　　要：针对电控喷油器动态响应性能需要改善的问题,运用Ansoft Maxwell电磁场仿真软件建立了喷油器的计算模型,对包括轭铁厚度、铁芯外径、衔铁长度、工作气隙、线圈匝数和线圈电阻在内的关键结构参数对其动态响应性能的影响规律进行了研究,在此基础上以各关键结构参数作为设计变量,开启滞后时间和落座滞后时间作为目标函数建立了相应的优化模型,通过遗传算法对这些结构参数进行了匹配优化,并通过仿真和试验的方法对该优化方案的有效性进行了验证。研究结果表明,经过优化后电控喷油器的开启滞后时间和落座滞后时间分别缩短了33.1%和37.1%,其动态响应性能得到了提高。Aiming at solving the problem of improving the dynamic response characteristics of the electronic fuel injector,the calculation model was established with help of the Ansoft Maxwell electromagnetic simulation software to analyze the effects of its key structural parameters on its dynamic response characteristics,including the thickness of yoke,outer diameter of core,length of armature,air gap,turns and resistor of coil. Based on the analyses,with these structural parameters as variables and the opening and closing delay time as objective functions,genetic algorithm was introduced into optimal design of these structural parameters,and the effectiveness of the optimal scheme was verified by simulation and experiment. The results indicate that after optimization,the opening and closing delay time can reduce by 33. 1%and 37. 1%,so its dynamic response characteristics are improved.

关 键 词：电控喷油器 开启滞后时间 落座滞后时间 遗传算法 

分 类 号：U464.136.1[机械工程—车辆工程] TH39[交通运输工程—载运工具运用工程]