摘要
超磁致伸缩材料具有输出大、响应速度快和稳定性强等优势,是驱动电控喷油器的最佳选择.结合材料的输出特性和喷油器的驱动需求,设计了一种超磁致伸缩式喷油器(GMI),并基于AMEsim软件建立了喷油器喷油特性的仿真模型;通过单次喷射仪测试了喷油器的喷油率曲线,对结构设计的可行性及仿真模型精度进行验证.结果表明:不同参数下的仿真模型计算值与试验值十分吻合,具有较高的计算精度;同时,所设计的超磁致伸缩式喷油器既可执行大流量喷射,也能实现高精度控制,喷油性能优良.
Giant magnetostrictive material has some useful properties like large magnetostriction,fast responding speed and high working stability etc and can be a promising choice of driving an electronic controlled injector. Combining the output characteristics of the giant magnetostrictive material and driving requirements of the injector,a giant magnetostrictive injector(GMI) was designed. Then AMEsim software was used to model the injection characteristics of the injector. Finally,the injection rate was tested using a single injection meter to verify the structure design and simulation model. Results show that the simulation model has high computing precision as the calculated injection parameters correspond well to the tested results under different parameters. Also,the giant magnetostrictive injector designed can execute large quantity injection and reach high precision injection simultaneously,giving excellent injection characteristics.
引文
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