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    Cam lobe profile for driving a mechanical fuel pump
    1.
    发明申请
    Cam lobe profile for driving a mechanical fuel pump 审中-公开
    用于驱动机械燃油泵的凸轮齿廓

    公开(公告)号：US20090272365A1

    公开(公告)日：2009-11-05

    申请号：US12150687

    申请日：2008-04-30

    Applicant: Timothy W. Kunz

    Inventor： Timothy W. Kunz

    IPC: F02M37/06

    CPC classification number: F02M59/102 ,  F04B9/042

    Abstract: In a fuel-pumping system in an internal combustion engine, a mechanical fuel pump roller actuator is slidably disposed to ride on a dedicated tri-lobate camshaft lobe. In prior art camshaft lobes for this purpose, a portion of the lift profile over a certain angle of camshaft rotation imparts a constant velocity, and hence zero acceleration and zero jerk, to the roller actuator. It has been found that such areas of zero acceleration give rise to undesirably high contact stress between the lobe and the roller actuator. In a method in accordance with the present invention, a reference radius of curvature of a reference camshaft lobe lift profile is adjusted such that, between regions of minimum lift and maximum lift, there are no regions imparting zero acceleration to the actuator and maximum contact stress is reduced.

    Abstract translation: 在内燃机的燃料抽吸系统中，机械燃油泵辊致动器可滑动地设置成骑在专用的三叶凸轮轴凸角上。 在现有技术中，用于此目的的凸轮轴凸角在凸轮轴旋转的某一角度上的一部分提升轮廓赋予辊致动器恒定的速度，因此零加速度和零加速度。 已经发现，零加速度的区域在凸角和辊致动器之间引起不期望的高接触应力。 在根据本发明的方法中，调整参考凸轮轴凸耳提升曲线的参考曲率半径，使得在最小升程和最大升程的区域之间没有赋予致动器零加速度的区域和最大接触应力 降低了。

    Direct acting hydraulic valve lifter with integral plunger
    4.
    发明授权
    Direct acting hydraulic valve lifter with integral plunger 失效
    直动液压升降器，带有一体式柱塞

    公开(公告)号：US4756282A

    公开(公告)日：1988-07-12

    申请号：US90920

    申请日：1987-08-31

    Applicant: Timothy W. Kunz ,  Donald G. Cole ,  Richard S. Knape ,  Arthur N. Krein

    Inventor： Timothy W. Kunz ,  Donald G. Cole ,  Richard S. Knape ,  Arthur N. Krein

    IPC: F01L1/25 ,  F01L1/24

    CPC classification number: F01L1/25

    Abstract: A direct acting hydraulic valve lifter of the type that is reciprocably journaled as in the cylinder head of an internal combustion engine so as to be engaged by a cam on an engine driven camshaft to control opening and closing movement of an associate valve. The lifter includes a follower body having a circular outer tubular wall with an inner integral web closely adjacent to one end thereof that terminates at a stepped bored integral depending piston, the one end thereof being closed by a disk cam engaging foot which forms with the piston and a surface of the web a fluid reservoir. A baffle, fixed to the plunger and to inner surface of the tubular wall, defines an oil supply passage which is adapted to receive fluid via a side port in the tubular wall and to be in flow communication with the fluid reservoir via an aperture in the web. A cup-shaped, closed end cylinder member slidably encircles the plunger to form therewith a hydraulic lash adjuster having a pressure chamber therein. In one enbodiment, a mechanical retainer is operatively secured to the tubular wall whereby to retain the cylinder member in unit assembly on the plunger. In a preferred embodiment, lubricating oil in the pressure chamber and in a leak-down flow path between the cylinder member and plunger and a one-way ball valve controlling flow into the pressure chamber are operative to hold the cylinder member in unit assembly on the plunger.

    Abstract translation: 一种直动式液压气门挺杆，其类似于内燃机的气缸盖中的可往复运动的轴颈，以便由发动机驱动的凸轮轴上的凸轮接合，以控制关联阀的打开和关闭运动。 升降机包括一个随动体，该主体具有圆形的外部管状壁，其内部整体腹板紧邻其一端，其终止于阶梯式钻孔的一体式悬挂式活塞，其一端由与活塞形成的圆盘凸轮接合脚封闭 并且所述幅材的表面是流体储存器。 固定到柱塞和管状壁的内表面的挡板限定了供油通道，该供油通道适于经由管状壁中的侧端口接收流体，并且通过管状壁中的孔与流体储存器流体连通 网络 一个杯形封闭的端部筒部件可滑动地围绕柱塞与其形成液压间隙调节器，其中具有压力室。 在一个实施例中，机械保持器可操作地固定到管状壁上，从而将柱塞构件保持在柱塞上的单元组件中。 在优选实施例中，压力室中的润滑油和气缸构件和柱塞之间的泄漏流动路径以及控制流入压力室的单向球阀可操作以将气缸构件保持在单元组件上 柱塞。

    Two-step roller finger cam follower assembly having a follower travel limiter
    5.
    发明授权
    Two-step roller finger cam follower assembly having a follower travel limiter 有权
    具有跟随行程限制器的两步辊指凸轮从动组件

    公开(公告)号：US07798113B2

    公开(公告)日：2010-09-21

    申请号：US11820789

    申请日：2007-06-20

    Applicant: Thomas H. Fischer ,  Andrew J. Lipinski ,  Hermes A. Fernandez ,  Timothy W. Kunz ,  Richard B. Roe

    Inventor： Thomas H. Fischer ,  Andrew J. Lipinski ,  Hermes A. Fernandez ,  Timothy W. Kunz ,  Richard B. Roe

    IPC: F01L1/18

    CPC classification number: F01L1/185 ,  F01L13/0015 ,  F01L13/0036 ,  F01L2001/186 ,  Y10T74/2107

    Abstract: A two-step roller finger follower assembly for use in conjunction with a camshaft of an internal combustion engine, wherein the camshaft has at least one first lobe and at least one second lobe. The roller finger follower assembly comprises a follower body for engaging the first cam lobe and having a central aperture, a follower pivotably disposed on the follower body in the central aperture for engaging the second cam lobe, and a limiting stop disposed on the follower body for engaging a feature on the follower to limit travel of the follower body with respect to the follower. The limiting stop prevents overtravel of the follower body during valve-deactivation mode of the assembly, thus preventing excessive leak down of an associated hydraulic lash adjuster.

    Abstract translation: 一种与内燃机的凸轮轴一起使用的两级辊指随动件组件，其中凸轮轴具有至少一个第一凸角和至少一个第二凸角。 辊指随动器组件包括用于接合第一凸轮凸角并具有中心孔的从动体，可枢转地设置在中心孔中的从动体上用于接合第二凸轮凸角的随动件，以及设置在从动体上的限制止动件 接合从动件上的特征以限制从动体相对于从动件的行进。 限制止挡件防止在组件的阀失活模式期间随动体的超程，从而防止相关联的液压间隙调节器的过度泄漏。

    Two-step roller finger cam follower assembly having a follower travel limiter
    9.
    发明申请
    Two-step roller finger cam follower assembly having a follower travel limiter 有权
    具有跟随行程限制器的两步辊指凸轮从动组件

    公开(公告)号：US20080314340A1

    公开(公告)日：2008-12-25

    申请号：US11820789

    申请日：2007-06-20

    Applicant: Thomas H. Fischer ,  Andrew J. Lipinski ,  Hermes A. Fernandez ,  Timothy W. Kunz ,  Richard B. Roe

    Inventor： Thomas H. Fischer ,  Andrew J. Lipinski ,  Hermes A. Fernandez ,  Timothy W. Kunz ,  Richard B. Roe

    IPC: F01L1/02

    CPC classification number: F01L1/185 ,  F01L13/0015 ,  F01L13/0036 ,  F01L2001/186 ,  Y10T74/2107

    Abstract: A two-step roller finger follower assembly for use in conjunction with a camshaft of an internal combustion engine, wherein the camshaft has at least one first lobe and at least one second lobe. The roller finger follower assembly comprises a follower body for engaging the first cam lobe and having a central aperture, a follower pivotably disposed on the follower body in the central aperture for engaging the second cam lobe, and a limiting stop disposed on the follower body for engaging a feature on the follower to limit travel of the follower body with respect to the follower. The limiting stop prevents overtravel of the follower body during valve-deactivation mode of the assembly, thus preventing excessive leak down of an associated hydraulic lash adjuster.

    Abstract translation: 一种与内燃机的凸轮轴一起使用的两级辊指随动件组件，其中凸轮轴具有至少一个第一凸角和至少一个第二凸角。 辊指随动器组件包括用于接合第一凸轮凸角并具有中心孔的从动体，可枢转地设置在中心孔中的从动体上用于接合第二凸轮凸角的随动件，以及设置在从动体上的限制止动件 接合从动件上的特征以限制从动体相对于从动件的行进。 限制止挡件防止在组件的阀失活模式期间随动体的超程，从而防止相关联的液压间隙调节器的过度泄漏。

    Roller actuator for a mechanical fuel pump
    10.
    发明申请
    Roller actuator for a mechanical fuel pump 审中-公开
    用于机械燃油泵的滚子致动器

    公开(公告)号：US20080230036A1

    公开(公告)日：2008-09-25

    申请号：US12077857

    申请日：2008-03-21

    Applicant: William D. Bauman ,  Ralph L. Clayson ,  David Draeger ,  Timothy W. Kunz ,  Daniel F. Smith

    Inventor： William D. Bauman ,  Ralph L. Clayson ,  David Draeger ,  Timothy W. Kunz ,  Daniel F. Smith

    IPC: F02M37/06

    CPC classification number: F02M37/06 ,  F02M59/102 ,  F02M59/44 ,  F02M63/0001 ,  F04B1/0413 ,  F04B1/0426

    Abstract: A fuel pump actuator comprising a body portion and a contact end fitted to the body portion for actuating a mechanical fuel pump in response to a camshaft lobe. A roller mounted to the body portion is configured to ride on the lobe. The contact end of the actuator engages a plunger of the fuel pump. The body portion of the actuator is preferably a body portion of a conventional hydraulic valve lifter and preferably includes a lash adjuster and is reciprocally disposed in a bore on the engine block. Lubrication of the reciprocating actuator is also similar to the lubrication provided to conventional valve lifters and lash adjusters. The contact end of the actuator is configured to reduce the mass of the actuator. Several styles of the contact end and ways of attaching the contact end to the body portion are provided.

    Abstract translation: 一种燃料泵致动器，包括主体部分和接合端，所述接触端装配到所述主体部分，用于响应于凸轮轴凸起来致动机械燃料泵。 安装到主体部分的滚轮被配置成骑在叶片上。 致动器的接触端接合燃料泵的柱塞。 致动器的主体部分优选地是常规液压气门挺杆的主体部分，并且优选地包括间隙调节器并且往复地设置在发动机缸体上的孔中。 往复式致动器的润滑也类似于提供给常规气门挺杆和间隙调节器的润滑。 致动器的接触端构造成减小致动器的质量。 提供了接触端的几种形式和将接触端附接到主体部分的方式。

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