-
公开(公告)号：US5979383A
公开(公告)日：1999-11-09
申请号：US298390
申请日：1999-04-23
CPC分类号： F01M9/102 , F01L1/185 , F01L2105/02 , F01M9/103 , F01M9/105
摘要： A rocker arm assembly includes a U-shaped rocker arm defined by a bottom wall and, two side walls depending upwardly therefrom where the side walls each have a central axle opening to support a transversely extending roller axle. A roller for rolling against a cam is rotatably supported on the roller axle through a roller bearing. The bottom wall of the rocker arm has a centrally located opening providing clearance for rotation of the roller and a spherical socket at a first end of the rocker arm to interface with an upper rounded end of a hydraulic lash adjuster. An oiling channel is provided along the bottom wall extending from the spherical socket, towards the roller, to terminate at the centrally located opening for channeling oil expelled from the hydraulic lash adjuster, wherein reciprocation of the rocker arm flings oil from the channel to the roller and roller bearing for lubrication.
摘要翻译： 摇臂组件包括由底壁限定的U形摇臂和从其向上悬挂的两个侧壁，其中侧壁各自具有中心轴开口以支撑横向延伸的辊轴。 用于滚动凸轮的滚子通过滚子轴承可旋转地支撑在滚子轴上。 摇臂的底壁具有中心定位的开口，其提供用于辊的旋转的间隙和在摇臂的第一端处的球形插座，以与液压间隙调节器的上圆形端连接。 沿着从球形插座延伸到底部壁的上游通道设置成朝向辊子，以终止于位于中心的开口，用于引导从液压间隙调节器排出的油，其中摇臂的往复运动使油从通道向辊子 和滚子轴承进行润滑。
-
公开(公告)号：US5934232A
公开(公告)日：1999-08-10
申请号：US97117
申请日：1998-06-12
CPC分类号： F01L1/14 , F01L1/146 , F01L1/245 , F01L13/0036 , F01L2105/00 , F01L2107/00
摘要： Valve lift mechanism for an engine includes a two step variable valve lifter having roller followers for engaging multiple cams on an associated camshaft of the engine and an anti-rotation guide mounted in the engine externally of a cylindrical bore receiving the lifter. The guide engages an axial guide recess in the lifter body without requiring a corresponding recess in the bore. The lifter also has a saddle in a central low lift cam follower engagable by lock pins in an annular body of an associated high lift cam follower to lock the followers together for high valve lift operation. The saddle is disposed axially between a follower roller and a high pressure chamber of a hydraulic lash adjuster of the low lift cam follower so that lock pin loads are transmitted as compressive forces through the low lift follower. The high lift follower rollers are received in pockets having sides that are crowned by shallow convex curvatures defining axially extending ridges which limit axial motion of the rollers so that the rubbing surface and associated friction are limited. Various additional specific features are disclosed. Application of the features to other valve lifters and cam followers is anticipated.
摘要翻译： 用于发动机的气门升程机构包括两级可变气门升降器，其具有用于接合发动机的相关凸轮轴上的多个凸轮的滚子跟随器，以及安装在发动机外部的反转引导件，所述反转引导件在接收升降器的圆柱形孔的外部。 引导件与升降机主体中的轴向引导凹部接合，而不需要在孔中相应的凹槽。 升降机还具有在中央低升程凸轮从动件中的鞍座，其通过相关联的高升程凸轮从动件的环形体中的锁定销接合，以将跟随器锁定在一起用于高气门升程操作。 鞍座轴向地布置在低升程凸轮从动件的液压间隙调节器的从动辊和高压室之间，使得锁定销负载作为压力通过低升程从动件传递。 高升降从动辊被容纳在具有限定轴向延伸的脊的浅凸曲率的顶部的凹部中，该凹凸限制了辊的轴向运动，使得摩擦表面和相关联的摩擦受到限制。 公开了各种附加的特定特征。 预期将特征应用于其他气门挺杆和凸轮从动件。
-
公开(公告)号：US06478001B1
公开(公告)日：2002-11-12
申请号：US10023014
申请日：2001-12-18
IPC分类号： F01L118
CPC分类号： F01L1/18 , F01L2101/00 , F01L2103/00 , F01L2105/00 , Y10T74/20882
摘要： A cam follower having a clamp disposed on at least one end thereof. The follower includes two opposing sidewalls interconnected by a lower pallet. A roller is rotatably mounted to and disposed between the sidewalls via needled or journal bearings or other rotatable connection known in the art. A clamp is disposed about an end of the follower to induce compression force in the pallet and possibly act as the valve guide walls. The clamp increases the stiffness of the follower and induces compressive stress in the pallet area thereby increasing fatigue life. The clamp could also increase the length of the valve guide walls for better stability during engine assembly.
摘要翻译： 具有设置在其至少一端上的夹具的凸轮从动件。 跟随器包括通过下托板相互连接的两个相对的侧壁。 辊经由针刺或轴颈轴承或本领域已知的其它可旋转连接可旋转地安装在侧壁之间并设置在侧壁之间。 夹具围绕随动件的端部设置以在托盘中引起压缩力，并且可能用作阀导向壁。 夹具增加了跟随器的刚度并且在托盘区域中引起压缩应力，从而增加了疲劳寿命。 夹具还可以增加阀导向壁的长度，以便在发动机组装期间获得更好的稳定性。
-
公开(公告)号：US6070561A
公开(公告)日：2000-06-06
申请号：US235916
申请日：1999-01-25
CPC分类号： F01M9/101 , F01L1/185 , F01M9/104 , F01L2105/02 , F01L2810/02 , Y10T29/49295 , Y10T74/20882
摘要： A valve actuator for an engine includes a pivot socket having a dome with an improved lubrication passage. The actuator may be a finger follower with a body having spaced side walls connected adjacent opposite ends by first and second transverse webs. A cam follower, preferably a roller, having a cam engaging surface is supported on the side walls between the opposite ends of the body. The first web is engagable with a valve while the second web has a pivot socket with a dome having a generally spherical lower recess for engaging a pivot and a domed upper surface adjacent to the follower cam engaging surface. A lubrication passage extends through the dome from the lower recess to the upper surface. The passage includes an inverted inner channel formed in the recess and having upwardly converging sides meeting at a peak, and a connecting outer channel formed in the domed upper surface and having downwardly converging sides meeting at a valley. The peak and the valley are connected at adjoining ends of the inner and outer channels to form a restricting opening. The opening has an upper edge formed by the peak and a lower edge formed by the valley and connects the channels to form the lubrication passage. The passage is formed by oppositely moving dies that form the inner and outer channels and overlap at adjoining ends to form the opening without leaving a slug. A final sizing step is preferably included to finish the opening.
摘要翻译： 用于发动机的阀致动器包括具有具有改进的润滑通道的圆顶的枢轴插座。 致动器可以是手指从动件，其主体具有通过第一和第二横向腹板连接在相邻端部的间隔开的侧壁。 具有凸轮接合表面的凸轮从动件，优选地具有滚子，该主体支撑在主体的相对端之间的侧壁上。 第一网可接合阀，而第二腹板具有枢轴插座，其具有圆顶，该圆顶具有用于接合枢轴的大体上球形的下凹部和邻近从动凸轮接合表面的圆顶形上表面。 润滑通道从下凹部延伸穿过圆顶到上表面。 通道包括形成在凹部中并且具有在峰顶处会聚的向上会聚侧的倒置内部通道，以及形成在圆顶形上表面中并具有在谷底处会聚的向下会聚侧的连接外部通道。 峰和谷连接在内部和外部通道的相邻端部以形成限制开口。 开口具有由峰形成的上边缘和由谷形成的下边缘并且连接通道以形成润滑通道。 通道由相互移动的模具形成，该模具形成内部和外部通道并且在相邻的端部重叠以形成开口而不留下块塞。 优选包括最终的施胶步骤以完成开口。
-
-
-
搜索结果
4 条记录 (耗时 0.01 秒)