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    • 37. 发明授权
    • Lift-variable valve-operating system for internal combustion engine
    • 内燃机升降变阀操作系统
    • US07392773B2
    • 2008-07-01
    • US11808722
    • 2007-06-12
    • Masahiko TashiroAkiyuki Yonekawa
    • Masahiko TashiroAkiyuki Yonekawa
    • F01L1/34
    • F01L1/08F01L1/185F01L1/24F01L1/26F01L1/267F01L13/0021F01L13/0026F01L13/0063F01L2013/0068F01L2105/00F01L2820/01
    • A lift-variable valve-operating system for an internal combustion engine, comprising: subsidiary cams which are swingably supported on a movable support shaft capable of being displaced within a plane perpendicular to a rotational axis of a valve-operating cam, and which are swung following the valve-operating cam; and rocker arms each operatively connected to an engine valve and operated following the subsidiary cams, operating characteristics including a lift amount of the engine valve being changed by displacing the movable support shaft, wherein the system further includes a control arm carried in an engine body to be capable of turning about a turning axis parallel to a rotational axis of the valve-operating cam, wherein the movable support shaft having an axis parallel to the turning axis of the control arm is retained on the control arm at a location offset from the turning axis, wherein a hydraulic tappet is mounted in the control arm to support one end of each of the rocker arms, and wherein a valve abutment portion provided at the other end of each of the rocker arms is in abutment against an upper end of a stem of the engine valve. Thus, it is possible to enhance the control accuracy in a state in which the lift amount of the engine valve is controlled to be low.
    • 一种用于内燃机的可变换阀操作系统,包括:可摆动地支撑在可移动的支撑轴上的辅助凸轮,其能够在与阀操作凸轮的旋转轴线垂直的平面内移位,并且摆动 遵循阀门操作凸轮; 和摇臂,每个操作地连接到发动机气门并在辅助凸轮之后操作,包括通过移动可移动支撑轴而改变发动机气门的提升量的操作特性,其中该系统还包括一个承载在发动机主体中的控制臂 能够转动平行于阀操作凸轮的旋转轴线的转动轴线,其中具有平行于控制臂的转动轴线的轴线的可移动支撑轴被保持在控制臂上的偏离转动的位置 其中,液压挺杆安装在所述控制臂中以支撑每个所述摇臂的一端,并且其中设置在每个所述摇臂的另一端的阀邻接部分与所述杆的上端抵接 的发动机气门。 因此,能够将发动机气门的升程量控制在低的状态下提高控制精度。