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公开(公告)号：US20020026918A1
公开(公告)日：2002-03-07
申请号：US09944765
申请日：2001-08-31
发明人： Bernhard Durr , Harald Schliemann , Manfred Rabis
IPC分类号： F01L001/18
CPC分类号： F02B63/02 , B27B17/0008 , F01L1/024 , F01L1/12 , F01L1/18 , F01L1/20 , F02B2075/027
摘要： A valve drive mechanism is provided for an internal combustion engine, especially a four-stroke engine in a power chain saw. The implement housing is spanned by a front handle, the tubular grip of which is adjacent to the cylinder head of the engine and extends from one longitudinal side of the implement to the other longitudinal side thereof. A rocker arm of a valve control is pivotably mounted on the cylinder head between the ends of the rocker arm, with the rocker arm being pivotable about a pivot axis disposed transverse to the rocker arm. Push rods of a control mechanism engage one end of the rocker arm to actuate a poppet valve, on the valve stem of which the other end of the rocker arm acts. To be able to guide the tubular grip close to the center of gravity of the implement, the longitudinal axis of the rocker arm is disposed approximately parallel to the adjacent portion of the tubular grip.
摘要翻译： 一种用于内燃机，特别是动力链锯中的四冲程发动机的阀驱动机构。 工具壳体由前把手横跨，其前部手柄与管状把手相邻，与发动机的气缸盖相邻并且从工具的一个纵向侧延伸到另一个纵向侧。 阀控制器的摇臂可摇动地安装在气缸盖上，在摇臂的端部之间，摇臂可围绕横向于摇臂布置的枢轴枢转。 控制机构的推杆接合摇臂的一端，以驱动提升阀，该提升阀位于摇臂的另一端作用的阀杆上。 为了能够将管状把手引导靠近工具的重心，摇臂的纵向轴线大致平行于管状把手的相邻部分。
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82.发明授权公开(公告)号：US06244231B1
公开(公告)日：2001-06-12
申请号：US09666532
申请日：2000-09-20
IPC分类号： F01M910
CPC分类号： F02F1/30 , F01L1/12 , F01L1/182 , F02B2275/34 , F02F2001/245
摘要： In order to supply a sufficient quantity of lubricating oil to the entire valve operating mechanism, we designed a lubrication device for an overhead valve engine. A first breather passage goes from the valve operating mechanism chamber to the crankcase, passing through the cylinder head and cylinder. The first breather passage opens in the vicinity of the spring retainer for the intake valve on the surface of the cylinder head which faces the valve operating mechanism chamber for the valve operating mechanism. The opening of the first passage and the vicinity of the exhaust valve are connected by a second breather passage. This second passage comprises a groove formed by cutting in the valve operating mechanism chamber surface of the cylinder head, and a tunnel formed between an oil guide wall which goes up from the valve operating mechanism chamber surface of the cylinder head and the peripheral wall of the head. One end of this groove connects to the opening of the first breather passage.
摘要翻译： 为了向整个阀门操作机构提供足量的润滑油，我们设计了一种顶置阀门发动机的润滑装置。 第一通气通道从阀操作机构腔室到达曲轴箱，通过气缸盖和气缸。 第一通气通道在气缸盖的面对用于阀操作机构的阀操作机构室的表面上的进气阀的弹簧保持器附近打开。 第一通道和排气门附近的开口通过第二通气通道连接。 该第二通道包括通过在气缸盖的气门操作机构腔室表面中切割而形成的凹槽，以及形成在从气缸盖的气门操作机构腔室表面向上升起的导油壁和 头。 该槽的一端连接到第一通气通道的开口。
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83.发明授权公开(公告)号：US06178936B2
公开(公告)日：2001-01-30
申请号：US09104395
申请日：1998-06-25
IPC分类号： F01L100
CPC分类号： F02F1/30 , F01L1/12 , F01L1/182 , F02B2275/34 , F02F2001/245
摘要： To simplify the assembling process to mount a valve operating mechanism on a cylinder head, one intake valve and one exhaust valve are mounted on the cylinder head symmetrically with respect to the axis of a cylinder shaft. A rocker arm supporting base which supports rocker arms is fixed to the top of the cylinder head. Rocker arm shafts are supported by the base. The central portions of the rocker arms engage with the rocker arm shafts in such a way that the arms are free to swing. Push rods and the intake and exhaust valves are engaged with the ends of the arms. The valve operating mechanism is enclosed in a head cover which is fixed to the top surface of the cylinder head. This engine is distinguished by having the mounting surface for the rocker arm supporting base, on which the rocker shafts are mounted, and the surface on which the head cover sits be virtually coplanar. This makes it possible to machine the two surfaces at the same time. In order to supply a sufficient quantity of lubricating oil to the entire valve operating mechanism, a particularly designed lubrication device is provided.
摘要翻译： 为了简化在气缸盖上安装气门操作机构的组装过程，一个进气门和一个排气门相对于气缸轴的轴线对称安装在气缸盖上。 支撑摇臂的摇臂支撑底座固定在气缸盖顶部。 摇臂轴由底座支撑。 摇臂的中心部分与摇臂轴接合，使得臂自由摆动。 推杆和进排气阀与臂的端部接合。 阀门操作机构封闭在固定在气缸盖顶表面上的头罩内。 该发动机的特征在于具有用于摇臂支撑底座的安装表面，摇臂轴安装在其上，并且头盖所在的表面实际上是共面的。 这样可以同时加工两个表面。 为了向整个阀操作机构供应足够量的润滑油，提供了特别设计的润滑装置。
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公开(公告)号：US5970933A
公开(公告)日：1999-10-26
申请号：US978318
申请日：1997-11-25
CPC分类号： F01L1/183 , F01L1/12 , F01L2003/255
摘要： A valve structure is disclosed which is mechanically simple and is suited for use in an overhead-valve engine having a hemi-spherical combustion chamber. In the valve structure, inlet valve 3 and exhaust valve 2 are positioned in such a manner that they incline substantially like a "V" in front view to form an acute angle therebetween. Positioned on a first inclined plane U1 are the longitudinal center lines 2a, 4a and 1a of the inlet valve 2, the associated push rod 4 and the associated rocker arm 1, which connects these, respectively. Positioned on a second inclined plane U2 are the longitudinal center lines 3a, 4a and 1a of the exhaust valve 3, the associated push rod 4 and the associated rocker arm 1, which connects these, respectively.
摘要翻译： 公开了一种机械简单并适用于具有半球形燃烧室的顶置式发动机的阀结构。 在阀结构中，入口阀3和排气门2以这样的方式定位，使得它们在前视图中基本上像“V”一样倾斜，以在它们之间形成锐角。 位于第一倾斜平面U1上的是分别连接这些的入口阀2的纵向中心线2a，4a和1a，相关联的推杆4和相关联的摇臂1。 位于第二倾斜平面U2上的是分别连接这些的排气门3的纵向中心线3a，4a和1a，相关联的推杆4和相关联的摇臂1。
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85.发明授权Device for actuating the valves in internal combustion engines by means of revolving cams 失效用于通过旋转凸轮致动内燃机中的阀的装置
公开(公告)号：US5601056A
公开(公告)日：1997-02-11
申请号：US540929
申请日：1995-10-11
申请人： Peter Kuhn , Gerhard Kachel , Helmut Schon
发明人： Peter Kuhn , Gerhard Kachel , Helmut Schon
CPC分类号： F01L1/08 , F01L1/12 , F01L13/0063 , F01L2013/0068
摘要： A device for actuating a valve in an internal combustion engine consists of a casing and a cam mechanism including a cam which is rotatably joined to the casing. The cam engages a tappet at a cam/tappet interface and the tappet engages a output link at a tappet/drive link interface. During cam rotation, the cam causes an acceleration to occur in the output link. The drive link moves alternately in either of two directions and is operably disposed within the casing so that the drive link transmits its motion to the valve. The cam is shaped such that in the interval between valve closure and reopening, the acceleration transmitted by the cam, at the cam/tappet interface in normal direction, is substantially constant and is directed away from the cam. During portions of the cycle of operation, the various mechanical links are kept in contact solely by the effect of inertial force thereby reducing the need for additional springs, such as commonly used to maintain contact between the intermediate link or tappet and the cam. A support element or stop engages the output link during valve closure such that the drive link does not engage the tappet at the tappet/drive link interface. This provides more linear acceleration and enhanced lubrication at the tappet/drive link interface during engine operation.
摘要翻译： 用于致动内燃机中的阀的装置包括壳体和凸轮机构，该凸轮机构包括可旋转地连接到壳体的凸轮。 凸轮在凸轮/挺杆接口处接合挺杆，并且挺杆接合挺杆/驱动连杆接口处的输出连杆。 在凸轮旋转期间，凸轮导致在输出连杆中发生加速。 驱动连杆在两个方向中任一方向上交替移动，并且可操作地设置在壳体内，使得驱动连杆将其运动传递到阀。 凸轮成形为使得在阀闭合和重新打开之间的间隔中，由凸轮在正向方向上的凸轮/挺杆接口处传递的加速度基本上是恒定的并且远离凸轮。 在操作循环的部分期间，各种机械连杆仅通过惯性力的作用而保持接触，从而减少对额外的弹簧的需要，例如通常用于保持中间连杆或挺杆与凸轮之间的接触。 在阀关闭期间，支撑元件或止动件接合输出连杆，使得驱动连杆在挺杆/驱动连杆接口处不接合挺杆。 这在发动机运行期间提供了更高的线性加速度和增强的挺杆/驱动链接界面的润滑。
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公开(公告)号：US5540207A
公开(公告)日：1996-07-30
申请号：US351332
申请日：1995-02-16
申请人： Erich Absenger
发明人： Erich Absenger
CPC分类号： F02M39/02 , F01L1/12 , F01L1/181 , F02M59/102 , F02B3/06
摘要： Described is a camshaft drive for the outlet and inlet valves and for actuating the fuel-injection pump (6) of a diesel engine, the invention calling for the three actuation functions to be carried out by the same cam (2) indirectly via a rocker arm (3, 5) for each cylinder.
摘要翻译： PCT PCT / EP94 / 01097 371日期1995年2月16日 102（e）日期1995年2月16日PCT 1994年4月8日PCT PCT。 第WO94 / 24419号公报 日期1994年10月27日描述了用于出口和入口阀并用于致动柴油发动机的燃料喷射泵（6）的凸轮轴驱动器，本发明要求由相同凸轮（2）执行三个致动功能 ）间接地经由每个气缸的摇臂（3,5）。
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公开(公告)号：US5394843A
公开(公告)日：1995-03-07
申请号：US101472
申请日：1993-08-02
申请人： Alex J. Decuir
发明人： Alex J. Decuir
摘要： A valve control device and related method of valve control which enhances performance characteristics of an internal combustion engine that utilizes push rods and extends the useful life of the valve control device is provided. The valve control device includes a valve engagement assembly which, in response to movement of the camshaft associated with the engine, interacts with a first valve closure mechanism associated with the valve such that the valve is efficiently opened and closed. The valve engagement assembly includes a rocker arm, which is pivotally connected to the engine and associated with a push rod which is reciprocable in response to movement of the camshaft. Further, a second valve closure mechanism is associated with the push rod for actuating downward movement of the push rod in cooperation, and substantially in unison, with the first valve closure mechanism which is engageable with the rocker arm. Each valve closure mechanism can be a compression spring of predetermined stiffness or elasticity and relative strength. The push rod can be connected to the rocker arm through a ball and socket joint that allows the push rod to rotate and spin during the upward and downward movement of the push rod.
摘要翻译： 提供了一种阀控制装置及其相关的阀门控制方法，其提高了利用推杆并延长阀控制装置的使用寿命的内燃机的性能特征。 阀控制装置包括阀接合组件，其响应于与发动机相关联的凸轮轴的移动与与阀相关联的第一阀闭合机构相互作用，使得阀被有效地打开和关闭。 阀接合组件包括摇臂，该摇臂枢转地连接到发动机并与可以响应于凸轮轴的运动往复运动的推杆相关联。 此外，第二阀闭合机构与推杆相关联，用于与可与摇臂接合的第一阀闭合机构协作并基本上一致地致动推杆的向下运动。 每个阀关闭机构可以是具有预定刚度或弹性和相对强度的压缩弹簧。 推杆可以通过球杆和插座接头连接到摇臂上，该接头允许推杆在推杆的向上和向下运动期间旋转和旋转。
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88.发明授权Camshaft with extra cam to increase the magnitude of torque pulsations therein 失效具有额外凸轮的凸轮轴以增加其中的扭矩脉动的幅度
公开(公告)号：US5107805A
公开(公告)日：1992-04-28
申请号：US732065
申请日：1991-07-18
CPC分类号： F01L1/08 , F01L1/047 , F01L1/12 , F01L1/46 , F16F15/043 , F01L2001/0478 , F01L2105/00 , F01L2810/03 , F02B2275/18 , Y10T74/2101
摘要： A torque amplifying camshaft for operating a valve of each of a plurality valves of an internal combustion engine, the camshaft having an elongagte shaftlike portion and an engine valve operating cam for each of the valves, the valve operating cams being spaced apart from one another along the shaftlike portion. Each of the engine valve operating cams has an outwardly projecting portion, and the outwardly projecting portions are circumferentially offset from one another about the longitudinal central axis of the camshaft. The camshaft also carries a supplementary cam surface, either in the form of an outwardly facing surface of a separate supplementary cam or an inwardly facing surface of a portion of a drive sprocket which is keyed to the shaftlike portion. The supplementary cam surface is adapted to be followed by a spring biased supplementary cam follower and has portions which introduce torque pulses into the camshaft which are synchronous with and consistently directed with respect to the torque pulses that are introduced into the camshaft by the engagement between the valve operating cams and spring biased followers which engage such valve operating cams.
摘要翻译： 一种用于操作内燃机的多个阀中的每一个的阀的扭矩放大凸轮轴，所述凸轮轴具有用于每个阀的细长轴状部分和发动机气门操作凸轮，所述阀操作凸轮彼此间隔开 沿着轴状部分。 每个发动机气门操作凸轮具有向外突出的部分，并且向外突出的部分围绕凸轮轴的纵向中心轴线彼此周向地偏移。 凸轮轴还承载辅助凸轮表面，其以单独的附加凸轮的向外表面的形式或驱动链轮的与轴部分相关的部分的向内表面的形式。 辅助凸轮表面适于紧随弹簧偏置的辅助凸轮从动件，并且具有将转矩脉冲引入凸轮轴的部分，该转矩脉冲与凸轮轴同步并且相对于通过接合 阀操作凸轮和弹簧偏置的从动件啮合这种阀操作凸轮。
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公开(公告)号：US5099805A
公开(公告)日：1992-03-31
申请号：US580081
申请日：1990-09-10
申请人： William E. Ingalls
发明人： William E. Ingalls
CPC分类号： F01L1/12 , F01L1/042 , F01L13/0057 , F02B3/06 , Y10T74/18304 , Y10T74/19828 , Y10T74/2102
摘要： A variable valve actuating device and method are disclosed, the device including a rotatable cam having a selectively configured cam face engagable with a worm drive at an outer engaging surface of the cam, the worm drive being configured for both rotary and axial movement, rotary movement imparting rotational motion to the cam face, and axial movement changing relative valve timing. The device preferably includes a plurality of such rotatable cams engagable with different ones of a plurality of worm drives to thus provide selective variation of valve opening and valve closing times independently of one another, with open-valve duration being variable to occur at any point in an overall operating cycle of the system.
摘要翻译： 公开了一种可变气门致动装置和方法，所述装置包括可旋转凸轮，所述可旋转凸轮具有可选择地配置的凸轮面，所述凸轮面可与所述凸轮的外啮合表面处的蜗杆传动装置接合，所述蜗杆传动装置用于旋转和轴向运动， 对凸轮面施加旋转运动，轴向移动改变相对气门正时。 该装置优选地包括多个这样的可旋转凸轮，其可与多个蜗杆驱动器中的不同蜗杆驱动器接合，从而相互独立地提供阀打开和闭阀时间的选择性变化，其中开阀持续时间可变地发生在 系统的整体运行周期。
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公开(公告)号：US4829949A
公开(公告)日：1989-05-16
申请号：US153717
申请日：1988-02-08
申请人： Ernst Holmer
发明人： Ernst Holmer
CPC分类号： F01L1/10 , F01L1/12 , F01L1/18 , F01L13/0063
摘要： The invention relates to a valve mechanism for controlling a disc valve (1) of an internal combustion engine and comprises a control shaft (2) which is driven by the engine crankshaft, and a push rod (3) which is driven by the control shaft (2) and which for the purpose of transmitting reciprocating movement is connected to one arm (14) of a two-arm rocker (4) which is pivotable about a rocker shaft (15) and the other arm (16) of which rocker transmits these movements to the valve (1). The valve mechanism according to the invention is characterized in that the control shaft (2) is intended to act upon the push rod (3) in both directions of movement thereof; in that the first arm (14) of the rocker (4) extends essentially at right angles to the push rod (3) and the second arm (16) of the rocker extends essentially parallel with the longitudinal geometric axis of the valve (1); and in that a lifting arm (5) is provided for transferring rocker movement to the valve (1). The other arm (16) of the rocker (4) is provided with activating means (18) for coaction with the lifting arm (5), one end of which is pivotally mounted on a lifting arm shaft (19) and the other end of which is provided with means for activating the valve (1). The lifting arm surface (20) which co-acts with the second arm (16) of the rocker (4) is profiled in a manner to achieve the desired pattern of movement of the second end of the lifting arm (5) in response to movement of the rocker (4).
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