韩宗祺,孔晨,崔毅,等.电控喷油嘴高压油道的密封性能[J].内燃机工程,2026,47(1):187-194.
电控喷油嘴高压油道的密封性能
Sealing Performance of High-Pressure Channels in Electronic Fuel Injectors
DOI：10.13949/j.cnki.nrjgc.2026.01.020
关键词:喷油器  密封性能  平面度  磨损  有限元
Key Words:fuel injector  sealing performance  flatness  wear  finite element
基金项目:《内燃机工程》编辑部
作者单位E-mail
韩宗祺* 上海交通大学 机械与动力工程学院，上海 200240 hzq809@sjtu.edu.cn 
孔晨 船舶与海洋工程特种装备和动力系统国家工程研究中心，上海 201108  
崔毅 上海交通大学 机械与动力工程学院，上海 200240 ycui@sjtu.edu.cn 
龚田泓 上海交通大学 机械与动力工程学院，上海 200240 gongtianhong@sjtu.edu.cn 
杨博耀 船舶与海洋工程特种装备和动力系统国家工程研究中心，上海 201108  
张永琦 上海交通大学 机械与动力工程学院，上海 200240 zhangyongqi_88@163.com 
刘硕* 上海交通大学 机械与动力工程学院，上海 200240 shuo-liu@foxmail.com 
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摘要:建立喷油器体–导向体接触密封静力学计算模型，采用Whalen简化方法评价密封性能，采用Archard模型描述磨损过程，开展密封表面形貌特征及接触面微动磨损对喷油器体–导向体平面密封性能的影响机理和规律研究。结果表明：随着密封凸台相对于支撑凸台增高，喷油器密封性能变好；随着密封面平面度增大，喷油器密封性能变差；密封接触面微动磨损在喷油器工作初始阶段可以提高密封性能，之后持续降低密封性能。
Abstract:A static contact sealing model was established for the injector body–guide body interface. The Whalen simplified method was used to evaluate sealing performance， and the Archard model was used to describe the wear behavior. The influence mechanisms and patterns of sealing surface morphology and fretting wear at the contact interface on planar sealing performance were investigated. The results show that sealing performance improved with an increased height of the sealing boss relative to the support boss. As the flatness of the sealing surface increased， sealing performance deteriorated. Fretting wear at the sealing interface initially enhanced the sealing effect during the early stage of injector operation， but led to continuous performance degradation over time.
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