喷油器衔铁阻尼特性仿真分析  

Simulation Analysis on Damping Characteristics of Common Rail Injector Armature

作　　者：郭立新 李康宁[1,2] 刘婷婷 GUO Lixin;LI Kangning;LIU Tingting(Wuxi Fuel Injection Equipment Research Institute,China FAW Co.,Ltd.,Wuxi 214063,China;Commercial Vehicle Development Institute,FAW Jiefang Automobile Co.,Ltd.,Wuix 2i14063,China)

机构地区：[1]中国第一汽车股份有限公司无锡油泵油嘴研究所,江苏无锡214063 [2]一汽解放汽车有限公司商用车开发院,江苏无锡214063

出　　处：《现代车用动力》2024年第1期30-34,共5页Modern Vehicle Power

摘　　要：衔铁是喷油器中最重要的执行零件,对喷油器的喷油特性的影响特别大。以某喷油器为研究对象,使用计算流体力学(CFD)的方法详细地研究了衔铁阻尼间隙对衔铁落座过程的影响规律。计算结果表明:衔铁落座初期,阻尼间隙产生的阻尼力很小;衔铁落座后期,阻尼力将迅速增加。当阻尼间隙小于0.050 mm后,衔铁才会在落座中受到较大阻尼力的作用。衔铁底部面积增加,衔铁受到阻尼力将变大。阻尼间隙上下端面平行度增加,衔铁圆周方向受到的阻尼力不均匀程度将变大。The armature is the most important part in the injector,which can affect the performance of the injector significantly.Taking a certain fuel injector as the research object,the influence of damping gap on the seating process was studied in detail using the CFD method.The calculation results show that:in the early seating,damping force is small due to the damping gap,in the late seating,damping force increases rapidly.When the damping gap is less than 0.050 mm,the armature will be larger damping force,the bottom surface area of the armature will increase,the damping force will increases.The parallel degree of damping gap which is on the lower end face increase,the uniformity of damping force will reduce in the peripheral direction of the armature.

关 键 词：喷油器 衔铁 计算流体力学 

分 类 号：U464.136[机械工程—车辆工程]