| 全可变液压气门机构的气门运动特性 |
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| 引用本文： | 谢宗法,王岩,王志明,马希利,顾珂韬,常英杰,刘力.全可变液压气门机构的气门运动特性[J].内燃机学报,2011(2). |
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| 作者姓名： | 谢宗法 王岩 王志明 马希利 顾珂韬 常英杰 刘力 |
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| 作者单位： | 山东大学机械工程学院;山东大学能源与动力工程学院;山东康达集团有限公司; |
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| 基金项目： | 山东省自然科学基金资助项目(ZR2009FM040); 清华大学汽车安全与节能国家重点实验室开放基金资助项目(KF10072) |
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| 摘 要： | 通过对全可变液压气门机构的气门升程和液压压力的试验测量,研究了全可变液压气门机构的气门运动特性.采用流通面积随气门升程可变的节流孔控制气门落座速度,分析了节流孔形状、最小节流面积和节流面积变化率等对气门落座过程的影响;采用单向阀通道降低液压系统内的液压流体的压力波动,保证了气门的平稳开启.通过对多种工况下气门落座速度的分析,得出气门最大升程对气门落座速度有重要影响,而发动机转速对气门落座速度的影响相对较小的结论.试验结果表明,通过合理匹配有关结构参数,全可变液压气门机构可实现气门平稳开启和平稳落座.
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| 关 键 词： | 全可变气门机构 气门升程 试验测量 气门落座速度 |
Valve Movement Characteristics Using Fully Variable Hydraulic Valve Train |
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| XIE Zong-fa,WANG Yan,WANG Zhi-ming,MA Xi-li,GU Ke-tao,CHANG Ying-jie,LIU Li.Valve Movement Characteristics Using Fully Variable Hydraulic Valve Train[J].Transactions of Csice,2011(2). |
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| Authors: | XIE Zong-fa WANG Yan WANG Zhi-ming MA Xi-li GU Ke-tao CHANG Ying-jie LIU Li |
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| Affiliation: | XIE Zong-fa1,2,WANG Yan1,WANG Zhi-ming2,MA Xi-li1,GU Ke-tao1,CHANG Ying-jie1,LIU Li3(1.School of Mechanical engineering,Shandong University,Jinan 250061,China,2.School of Energy & Power engineering,3.Shandong Kangda Group Company Limited,Yantai 265701,China) |
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| Abstract: | The characteristics of valve movement using fully variable hydraulic valve train is studied by measurement of valve lift and oil pressure of fully variable hydraulic valve train.Valve-seating velocity is controlled by a variable throttle hole whose flow area is changed with valve lift.The effect of the shape,the minimal flow area and the flow area changing rate of throttle hole on valve seating process is analyzed.Pressure fluctuation of the hydraulic system is reduced by one-way valve to protect the valve ... |
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| Keywords: | fully variable valve train valve lift testing measurement valve-seating velocity |
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