北京交通大学学报2017，Vol.41Issue(6)：94-100,7.DOI:10.11860/j.issn.1673-0291.2017.06.015
高压共轨喷油器响应特性的仿真分析
Numerical simulation of high pressure common rail injector response characteristics
摘要
Abstract
In order to analyze the influence of structure parameters on high pressure common rail injector response characteristics,this paper takes a particular heavy-duty diesel engine high pres-sure common rail injector as the research object,builds the simulation model by using the AMESim software and verifies the accuracy of the model by experiments.The results show that the increase of the inlet hole diameter will enhance the open response speed of the fuel injector but lower its close response speed.With the acceleration of the fuel injector open response speed,the increase of the control plunger diameter will enhance the close response speed of the fuel injector but lower its open response speed;the increase of needle valve sealing diameter will improve the opening and close response speed at the same time,the increase of the needle valve spring pre-tightening force will prolong the needle valve turn-on time and lower its turn-off time.Therefore, in the process of the injector design,the inlet hole diameter should be chosen carefully,and the outlet hole and needle valve sealing diameter should be increased appropriately.It can be applied as theoretical guidance for the optimization of structural parameters of high pressure common rail injector.关键词
柴油机/高压共轨喷油器/结构参数/响应特性/AMESimKey words
diesel engine/high pressure common rail injector/structure parameters/response char-acteristics/AMESim分类
能源科技引用本文复制引用
缑庆伟,张新敏,赵畅,张欣..高压共轨喷油器响应特性的仿真分析[J].北京交通大学学报,2017,41(6):94-100,7.基金项目
国家科技支撑计划(2014BAG11B01) National Key Technology Research and Development Program of China(2014BAG11B01) （2014BAG11B01）
