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    • 7. 发明申请
    • System for selectively varying engine valve open duration
    • 用于选择性地改变发动机气门打开持续时间的系统
    • US20080078346A1
    • 2008-04-03
    • US11904851
    • 2007-09-28
    • Jongmin LeeJeffrey D. RoheEdward S. SuhMichael B. Knauf
    • Jongmin LeeJeffrey D. RoheEdward S. SuhMichael B. Knauf
    • F01L1/34
    • F01L13/0021F01L13/0047F01L13/0063F01L2001/0476F01L2001/0478
    • A continuously variable valve duration system including a rocker assembly acted upon by two off-spaced camshafts for selectively varying the closing point of a valve in an internal combustion engine. An opening camshaft is rotatably driven by the engine crankshaft and controls at least the opening and point of the valve through a rocker assembly disposed on a fixed pivot shaft. A closing camshaft, rotatably connected to the opening intake camshaft through a cam phaser, is poised to take over control of the valve closing event through the same rocker assembly. By changing the rotational phase of the closing camshaft relative to the opening camshaft via the cam phaser, the valve closing event can be either retarded or advanced so as to override the opening camshaft and thus selectively vary the valve event duration.
    • 一种连续可变气门持续时间系统,包括由两个偏离间隔的凸轮轴作用的摇臂组件,用于选择性地改变内燃机中的阀的关闭点。 打开的凸轮轴由发动机曲轴旋转驱动,并且至少通过设置在固定枢轴上的摇杆组件来控制阀的开口和点。 通过凸轮相位器可旋转地连接到开启进气凸轮轴的闭合凸轮轴准备通过相同的摇杆组件接管控制闭合事件。 通过经由凸轮相位器相对于打开凸轮轴改变闭合凸轮轴的旋转相位,可以延迟或提前关闭阀门事件,以便超越开启凸轮轴,从而选择性地改变阀门事件持续时间。