电液式可变气门系统回油阶段瞬时压力的分析  

Analysis of instantaneous pressure in oil return stage of electro-hydraulic variable valve system

作　　者：吴学舜 张洪川 杜德峰 韩志强[1] 赵家辉 WU Xueshun;ZHANG Hongchuan;DU Defeng;HAN Zhiqiang;ZHAO Jiahui(Fluid and Power Machinery Key Laboratory of Ministry of Education, Xihua University, Chengdu, Sichuan 610039, China;Shanghai Marine Diesel Engine Research Institution, Shanghai 201108, China)

机构地区：[1]西华大学流体及动力机械教育部重点实验室,四川成都610039 [2]中国船舶重工集团有限公司第七一一研究所,上海201108

出　　处：《江苏大学学报（自然科学版）》2020年第2期206-213,共8页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51776177);四川省教育厅自然科学基金资助项目(13ZB0022);教育部春晖计划项目(Z2014059)。

摘　　要：基于某型号船用柴油发动机电液式可变气门系统,通过试验与仿真相结合的方法,在试验数据与仿真结果符合较好的情况下,建立了压力波动评价体系,研究了回油电磁阀的开启斜率、最大开度、开启相位和供油压力对电磁阀阀后液压油路回油阶段的瞬时压力特征时间(分为急降区时间、稳定区时间和自由下降区时间等3个区间)的影响.研究结果表明:急降区时间随回油电磁阀开启斜率的增加而减小,随最大开度的增加而增加;稳定区时间随回油电磁阀开启斜率的增加而增加,随最大开度的增加而减小;回油电磁阀开启斜率和最大开度对急降区时间和稳定区时间的影响均大于开启相位和供油压力的影响;自由下降区时间几乎不受回油电磁阀开启斜率、最大开度、开启相位和供油压力的影响.Based on a certain type of marine diesel electro-hydraulic variable valve system,through the combination of experiment and simulation,the pressure fluctuation evaluation system was established when the simulation results and experimental data were in good agreement.The effects of the opening slope,the maximum opening,the opening phase and the supply pressure of the oil return solenoid valve in plunge interval,stable interval and free drop interval on the characteristic time of instantaneous pressure for the hydraulic oil circuit after solenoid valve were investigated.The results show that the characteristic time of plunge interval is decreased with the increasing of opening slope of oil return solenoid valve and increased with the increasing of the largest opening.The characteristic time of stable interval is increased with the increasing of opening slope of oil return solenoid valve and decreased with the increasing of the largest opening.The effects of the oil return valve open slope and the largest opening on characteristic time of plunge interval and stable interval are greater than those of open phase position and oil-supply pressure.The oil return solenoid valve open slope,the largest opening,the open phase position and the oil-supply pressure have slight effects on the characteristic time of free drop interval.

关 键 词：船用柴油发动机 电液式可变气门 液压油路 瞬时压力 特征时间 

分 类 号：TK427[动力工程及工程热物理—动力机械及工程]