缸内直喷氢气发动机液压式氢气喷射系统仿真  

Simulation of Hydraulic Hydrogen Injection System for Direct Injection Hydrogen Engine

作　　者：曹兴达 李勇 高文志[1] 张攀 付振 叶奕翔 CAO Xingda;LI Yong;GAO Wenzhi;ZHANG Pan;FU Zhen;YE Yixiang(State Key Laboratory of Engines,Tianjin University,Tianjin 300072,China)

机构地区：[1]天津大学内燃机燃烧学国家重点实验室,天津300072

出　　处：《机械科学与技术》2022年第9期1321-1326,共6页Mechanical Science and Technology for Aerospace Engineering

基　　金：内燃机燃烧学国家重点实验室自主课题。

摘　　要：为研究与缸内直喷氢气发动机相匹配的液压式氢气喷射系统特性,采用AMESim软件建立了缸内直喷氢气发动机液压式氢气喷射系统仿真模型,利用所建立的模型模拟分析了氢气喷射系统工作的动态过程,采用单因素分析方法研究了液压管路结构参数、液压油绝对黏度和供油压力、复位弹簧预紧力和弹簧刚度对氢气喷射系统针阀响应延时的影响规律。最终决定选取复位弹簧预紧力210 N、弹簧刚度190 N/mm、供油压力10 MPa、液压管道a直径4 mm、液压油绝对黏度51 cp作为缸内直喷氢气发动机匹配的氢气喷射系统的结构参数,为电控液压式氢气喷射系统的设计提供了参考。In order to study the characteristics of the hydraulic hydrogen injection system matching with the direct injection hydrogen engine, the simulation model for the hydraulic hydrogen injection system of the in cylinder direct injection hydrogen engine is established via AMESim software. The dynamic process of the hydrogen injection system is simulated and analyzed with the present model. Single factor analysis method was used to study the influence of the hydraulic pipeline structure parameters,absolute viscosity and supply pressure of hydraulic oil, preload and stiffness of return spring on response delay of needle valve in hydrogen injection system. It is finally decided to select the structure parameters of hydrogen injection system matching the in cylinder direct injection hydrogen engine, including preload of return spring 210 N, spring stiffness 190 N/mm, oil supply pressure10 MPa, diameter of hydraulic pipe 4 mm and absolute viscosity of hydraulic oil 51 cp. It provides a reference for designing the electronic hydraulic hydrogen injection system.

关 键 词：氢气发动机 缸内直喷 电控喷射 AMESIM 

分 类 号：TG156[金属学及工艺—热处理]