江苏大学学报（自然科学版）2017，Vol.38Issue(5)：516-521,6.DOI:10.3969/j.issn.1671-7775.2017.05.004
供油压力对电液可变气门系统压力波动的影响
Effects of oil pressure on pressure fluctuation ofelectro liquid variable valve system
摘要
Abstract
Hydraulic fluctuation can directly affect the opening and closing characteristics of electric-hydraulic type variable valve system and indirectly affect the status data of cylinder gas.The pressure fluctuation and the systematical evaluation parameters were establised based on the working process of electro-hydraulic variable valve system for DK4A diesel engine, and the influence of oil pressure from 2.5 to 4.5 MPa on the pressure fluctuation in variable valve system of diesel engine was analyzed by the evaluation parameters.The results show that with the increasing of oil pressure, the characteristic parameters of pressure fluctuation phases(α1-α8) are appeared in advance, and the peak pressure of p1 and p2 are increased.The pressure difference and the pressure mutation rate of pressure fluctuation range(β1,β2,β4)are increased, and the pressure mutation rate of range β5 is increased first with latter decreased change.The average value of pressure fluctuation, the fluctuation rate and the fluctuation variance of range β3 are increased.The average value of pressure fluctuation is almost constant with slight change of fluctuation range, and the variance value is increased slowly in the range of β6.关键词
柴油机/可变气门系统/供油压力/压力波动/特征参数Key words
diesel engine/variable valve system/oil pressure/pressure fluctuation/characteristic parameter分类
能源科技引用本文复制引用
韩志强,赵家辉,邱鹏,田维,韩伟强,夏琦..供油压力对电液可变气门系统压力波动的影响[J].江苏大学学报（自然科学版）,2017,38(5):516-521,6.基金项目
国家自然科学基金资助项目(51406137) （51406137）
教育部春晖计划项目(Z2014059) （Z2014059）
教育部重点实验室开放课题项目(szjj2016006) （szjj2016006）
西华大学研究生创新基金资助项目(ycjj2016191) （ycjj2016191）
