韩志强，胡明艳，赵家辉，田维，周洲.电液可变气门系统液压油路瞬时压力的分析[J].内燃机工程,2019,40(2):82-91.
电液可变气门系统液压油路瞬时压力的分析
Analysis of Instantaneous Pressure of Hydraulic Circuit in Electro-Hydraulic Variable Valve Timing System
DOI：10.13949/j.cnki.nrjgc.2019.02.012
关键词:船用柴油机  液压油路  瞬时压力  压力变化率  波动方差
Key Words:marine diesel engine  hydraulic circuit  instantaneous pressure  pressure change rate  fluctuation variance
基金项目:国家自然科学基金资助项目（51776177）；四川省教育厅项目（13ZB0022）；教育部春晖计划项目（Z2014059）
作者单位
韩志强，胡明艳，赵家辉，田维，周洲 1.西华大学 流体及动力机械教育部重点实验室，成都 610039； 2.中国船舶重工集团公司第七一一研究所，上海 201108 
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摘要:基于某型号船用柴油机电液可变气门系统的仿真模型，研究了回油电磁阀的开启斜率、最大开度限值、开启相位和供油压力对液压油路回油阶段瞬时压力的影响。研究结果表明：急降区的瞬时压力变化率几乎不受供油压力的影响，但随回油电磁阀开启斜率增加而增加，随开启相位的提前和最大开度限值的增加而减小；稳定区的波动方差随供油压力和开启斜率的增加而增加，随开启相位的提前和最大开度限值的增加而减小；自由下降区的瞬时压力变化率几乎不受回油电磁阀开启斜率、最大开度限值、开启相位和供油压力的影响。
Abstract:Using the simulation model of a type of marine diesel electro-hydraulic variable valve timing system, the influence of the design parameters of oil return solenoid valve, including opening slope, maximum opening limit, opening phase and oil supply pressure on the instantaneous pressure of hydraulic circuit during oil return stage was studied. Results show that the instantaneous pressure change rate in the oil pressure drop zone is almost unaffected by the oil supply pressure, but increases as the solenoid valve opening slope increases, and decreases as the opening phase advances and the maximum opening limit increases. The fluctuation variance in the oil pressure stabilization zone increases with the increase of the oil supply pressure and opening slope, and decreases with the advance of the opening phase and the increase of the maximum opening limit. However, the instantaneous pressure change rate in the free pressure drop zone is almost independent of the solenoid valve opening slope, maximum opening limit, opening phase and oil supply pressure.
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