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发明授权
US07325523B2 Valve timing gear of an internal combustion engine 失效
内燃机的气门正时齿轮

Valve timing gear of an internal combustion engine
摘要：
In a valve timing gear of an internal combustion engine having hydraulic valve clearance adjusting elements (21), each element (21) comprises a rotationally symmetrical housing (22), which is guided so that it is longitudinally displaceable in a seat in the engine and at one axial end of the element (21) is acted upon by a cam of a camshaft. The element (21) comprises a piston (24) which is axially displaceable in the housing (22) and is non-positively connected either directly or indirectly to an engine gas exchange valve. A control valve (31), which has a closing member (39) and a valve seat for this formed on the piston (24), is arranged axially between the housing (22) and the piston (24). A reverse-spring element is used as valve clearance adjusting element (21), that is to say an element the control valve (31) of which comprises a control valve spring (30), which is supported by one end on the piston (24) and by the other end on the closing member (39).
摘要（中）：

在具有液压阀间隙调节元件（21）的内燃机的气门正时齿轮中，每个元件（21）包括旋转对称的壳体（22），该壳体被引导以使其可在发动机的座中纵向移位， 在元件（21）的一个轴向端处由凸轮轴的凸轮作用。 元件（21）包括可在壳体（22）中轴向移动并且直接或间接地与发动机气体交换阀无关联的活塞（24）。 具有封闭构件（39）的控制阀（31）和形成在活塞（24）上的阀座，轴向地布置在壳体（22）和活塞（24）之间。 使用反向弹簧元件作为阀间隙调节元件（21），也就是说，其控制阀（31）的元件包括控制阀弹簧（30），其由活塞（24）上的一端支撑 ），另一端在封闭件（39）上。

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