Variable lost motion valve actuator and method
    1.
    发明申请
    Variable lost motion valve actuator and method 有权
    可变的运动阀致动器和方法

    公开(公告)号:US20070095312A1

    公开(公告)日:2007-05-03

    申请号:US11450286

    申请日:2006-06-12

    IPC分类号: F01L1/34

    摘要: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.

    摘要翻译: 公开了一种失速发动机气门致动系统和致动发动机气门的方法。 该系统可以包括气门机构元件,枢转杆,控制活塞和液压回路。 枢转杆可以包括用于接触控制活塞的第一端,用于将运动传递到阀杆的第二端和用于接触气门机构元件的装置。 可以通过改变控制活塞相对于枢转杆的位置来选择由系统提供的空动量。 可以通过将控制活塞与控制触发阀和一个或多个蓄能器液压连接来实现控制活塞位置的变化。 触发阀的启动释放液压流体,允许调节控制活塞位置。 还公开了用于限制阀座速度,在发动机起动时填充液压回路以及将控制活塞/杆机械地锁定在固定水平的阀致动的装置。

    Rocker arm system for engine valve actuation
    3.
    发明申请
    Rocker arm system for engine valve actuation 审中-公开
    用于发动机气门驱动的摇臂系统

    公开(公告)号:US20050274341A1

    公开(公告)日:2005-12-15

    申请号:US11128328

    申请日:2005-05-13

    摘要: Systems and methods for actuating engine valves are disclosed. The systems may include primary and auxiliary rocker arms disposed adjacent to each other on a rocker arm shaft. A rocker arm coupling assembly may be disposed between the auxiliary rocker arm and the primary rocker arm. The coupling assembly may include a piston having a curved surface disposed in a bore formed in the primary rocker arm, and a slot having a second radius of curvature formed in the auxiliary rocker arm. The piston may be selectively hydraulically locked into an extended position between the primary and auxiliary rocker arms so as to selectively transfer one or more auxiliary valve actuation motions from the auxiliary rocker arm to the primary rocker arm.

    摘要翻译: 公开了用于致动发动机气门的系统和方法。 系统可以包括在摇臂轴上彼此相邻设置的主和辅助摇臂。 摇臂联接组件可以设置在辅助摇臂和主摇臂之间。 联接组件可以包括具有设置在形成在主摇臂中的孔中的弯曲表面的活塞,以及形成在辅助摇臂中的具有第二曲率半径的槽。 活塞可以选择性地液压地锁定在主摇臂之间的延伸位置,以便选择性地将一个或多个辅助阀致动运动从辅助摇臂移动到主摇臂。