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1. 发明申请

US20070266973A1 VALVE ACTUATING MECHANISM 审中-公开
标题翻译：阀门执行机构
公开(公告)号：US20070266973A1
公开(公告)日：2007-11-22
申请号：US11744964
申请日：2007-05-07
申请人： Timothy Mark Lancefield , Ian Methley , Mark Andrew Richard Walton
发明人： Timothy Mark Lancefield , Ian Methley , Mark Andrew Richard Walton
IPC分类号： F01L1/18 , F01L1/34
CPC分类号： F01L13/0047 , F01L1/146 , F01L1/2411 , F01L1/267 , F01L13/0005 , F01L2105/00
摘要： A mechanism for actuating an engine poppet valve includes two rotatable cams, a first rocker mounted on a pivot shaft and acting between a first of the two cams and the stem of the valve, and a second rocker mounted for rotation about a fixed axis and acting between the second of the two cams and the pivot shaft of the first rocker to raise and lower the pivot axis of the first rocker cyclically in synchronism with the rotation of the second cam, whereby the valve is operated in dependence upon the instantaneous sum of the lifts of the two cams. In the invention, an element of the valve actuating mechanism transmitting force from one of the cams to the valve stem is formed in two parts, one part movable by the associated cam and the other transmitting force to the valve stem, and a latching mechanism is provided for selectively locking the two parts of the element for movement in unison with one another and disconnecting the two parts of the element from one another to inhibit transmission of force from the associated cam to the valve stem. The latching mechanism is such that a change of state from locked to disconnected and vice versa can only take place when at least one of the two rockers is at or near the base circle of the associated cam and the change of state is initiated by the movement of the rocker system whilst the poppet valve is closed.
摘要翻译：用于致动发动机提升阀的机构包括两个可旋转凸轮，第一摇臂安装在枢转轴上并且作用在两个凸轮中的第一个和阀的杆之间，第二摇臂安装成围绕固定轴线旋转和作用在两个凸轮中的第二个和第一摇杆的枢轴之间，与第二凸轮的旋转同步地循环地升高和降低第一摇臂的枢转轴线，由此阀根据两个凸轮的升降机。在本发明中，阀驱动机构中的一个凸轮传递到阀杆的力的元件形成为两部分，一部分通过相关联的凸轮移动，另一部分可以通过另一个传递力传递到阀杆，并且闭锁机构提供用于选择性地锁定元件的两个部分以彼此一致地运动并且将元件的两个部分彼此断开，以阻止力从相关联的凸轮传递到阀杆。闭锁机构是这样的，即当两个摇臂中的至少一个处于或接近相关联的凸轮的基圆时，状态从锁定状态改变到断开状态，反之亦然，并且状态改变由移动在提升阀关闭的同时摇摆系统。

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