公开(公告)号：US6021751A

公开(公告)日：2000-02-08

申请号：US252143

申请日：1999-02-18

Applicant: Mark James Spath

Inventor： Mark James Spath

IPC: F01L1/25

CPC classification number: F01L1/25

Abstract: A hydraulic valve lifter for use between a cam and a valve in an engine valve train includes a hydraulic lash adjuster element of varying length for acting in the valve train between the cam and valve, an expansion spring for extending the length of the lash adjuster to take up lash in the valve train between valve opening events, and a lash spring stronger than the expansion spring but weaker than a valve spring of an associated engine valve. The lash spring biases the adjuster element against the expansion spring and shortens the effective lash adjusting length of the valve lifter a small amount to maintain a sufficient amount of lash in the valve train between valve opening events to prevent holding open of the valve during cold engine operation. Various embodiments are disclosed.

Abstract translation: 用于发动机气门机构中的凸轮和阀之间的液压气门挺杆包括用于作用在凸轮和阀之间的气门机构中的不同长度的液压间隙调节元件，用于将间隙调节器的长度延伸到 在阀门开启事件之间采取气门机构中的间隙，并且鞭簧弹簧比膨胀弹簧更强，但比相关发动机气门的阀弹簧弱。 襟翼弹簧将调节器元件抵靠膨胀弹簧偏压，并将阀提升器的有效间隙调节长度略微缩小，以在阀门开启事件之间保持阀组中的足够量的间隙，以防止冷引擎期间阀门保持打开 操作。 公开了各种实施例。

公开(公告)号：US06321705B1

公开(公告)日：2001-11-27

申请号：US09557732

申请日：2000-04-26

Applicant: Hermes A. Fernandez ,  Jongmin Lee ,  Mark James Spath ,  Nick John Hendriksma

Inventor： Hermes A. Fernandez ,  Jongmin Lee ,  Mark James Spath ,  Nick John Hendriksma

IPC: F01L1300

CPC classification number: F01L1/185 ,  F01L13/0005 ,  F01L2105/00

Abstract: A deactivation roller finger follower for use with an internal combustion engine includes an elongate body. The body has a valve pallet end and a socket. The pallet end is configured for engaging a valve stem of the internal combustion engine. The socket is configured for engaging a hydraulic lash adjuster of the internal combustion engine. The body defines a roller aperture. A roller is disposed within the roller aperture. The roller is configured for engaging a cam lobe of the internal combustion engine. The roller defines a shaft orifice therethrough. An elongate shaft extends transversely through the shaft orifice. In a default operating position, the shaft is coupled to the body to thereby transfer rotary motion of the cam to pivotal movement of the body about the hydraulic lash adjuster. The shaft is selectively decoupled from the body such that the rotary motion of the cam is not transferred to pivotal movement of the body.

Abstract translation: 用于内燃机的停用辊指随动件包括细长体。 阀体具有阀门托架端和插座。 托盘端构造成用于接合内燃机的阀杆。 该插座构造成用于接合内燃机的液压间隙调节器。 本体定义一个滚筒孔。 辊子设置在辊孔内。 辊被构造成用于接合内燃机的凸轮凸角。 辊定义了通过其中的轴孔。 细长轴横向延伸穿过轴孔。 在默认操作位置，轴联接到主体，从而将凸轮的旋转运动传递到主体围绕液压间隙调节器的枢转运动。 轴被选择性地与主体分离，使得凸轮的旋转运动不被转移到主体的枢转运动。

公开(公告)号：US5709180A

公开(公告)日：1998-01-20

申请号：US795746

申请日：1997-02-06

Applicant: Mark James Spath

Inventor： Mark James Spath

IPC: F01L1/14 ,  F01L1/25 ,  F01L13/00

CPC classification number: F01L13/0036 ,  F01L1/143 ,  F01L1/25

Abstract: A two-step valve lifter for actuation of a valve member in an internal combustion engine includes an outer cam follower, having a cam-engaging upper surface with a cylindrical body depending therefrom, and an inner cam follower disposed within said cylindrical body. The inner follower includes a hollow cylinder having a first diameter "D", an upper, closed end and a lower, open end. The open end is configured to receive, for disposition between the two-step valve lifter and the valve member, a lash adjusting, hydraulic element assembly. An obround follower foot, having a length "L" normal to said camshaft axis and a width "W" parallel to said camshaft axis and less than said length "L", extends from the upper, closed end of the inner follower to terminate in a cam engaging surface which is extendable through an opening in the cam engaging surface of the outer cam follower. The width "W" of the follower foot is less than the first diameter "D" of the hollow cylinder of the inner follower. In operation, the first cam is operable in a first mode to contact the cam engaging surface of the obround follower foot and in a second mode of operation the second cam is operable in a second mode of operation to contact the cam engaging surface of the outer cam follower at a location radially inwardly of the first diameter of the hollow cylinder of the inner cam follower.

Abstract translation: 用于致动内燃机中的阀构件的两级阀提升器包括：外凸轮从动件，具有凸轮接合的上表面和从其排出的圆柱体，以及设置在所述圆柱体内的内凸轮随动件。 内部跟随器包括具有第一直径“D”，上部封闭端和下部开口端的中空圆柱体。 开口端被配置为接收用于两级阀提升器和阀构件之间的配置的间隙调节液压元件组件。 具有垂直于所述凸轮轴轴线的长度“L”并且平行于所述凸轮轴轴线且小于所述长度“L”的宽度“W”的双向随动脚从所述内部跟随器的上部闭合端延伸以终止于 凸轮接合表面，其可以通过外凸轮从动件的凸轮接合表面中的开口延伸。 随动脚的宽度“W”小于内跟随器的中空圆柱的第一直径“D”。 在操作中，第一凸轮可在第一模式下操作以接触所述双向随动脚的所述凸轮接合表面，并且在第二操作模式中，所述第二凸轮可在第二操作模式下操作以接触所述外侧的所述凸轮接合表面 凸轮从动件位于内凸轮从动件的中空圆柱体的第一直径的径向内侧的位置。

公开(公告)号：US06513470B1

公开(公告)日：2003-02-04

申请号：US09693452

申请日：2000-10-20

Applicant: Nick John Hendriksma ,  Mark James Spath

Inventor： Nick John Hendriksma ,  Mark James Spath

IPC: F01L134

CPC classification number: F01L1/14 ,  F01L1/146 ,  F01L1/24 ,  F01L13/0005 ,  F01L13/0031 ,  F01L2105/00 ,  Y10T74/2107

Abstract: A deactivation hydraulic valve lifter includes an elongate lifter body having a substantially cylindrical inner wall. The inner wall defines at least one annular pin chamber therein. The lifter body has a first end configured for engaging a cam of an engine. An elongate pin housing includes a substantially cylindrical pin housing wall and pin housing bottom. The pin housing wall includes an inner surface and an outer surface. The pin housing bottom defines a radially directed pin bore therethrough. The pin housing is concentrically disposed within the inner wall of the lifter body such that the outer surface of the pin housing wall is adjacent to at least a portion of the inner wall of the lifter body. A plunger having a substantially cylindrical plunger wall with an outer surface is concentrically disposed within the pin housing such that the outer surface of the plunger wall is adjacent to at least a portion of the inner surface of the pin housing wall. A deactivation pin assembly is disposed within the pin bore and includes two pin members. The pin members are biased radially outward relative to each other. A portion of each pin member is disposed within the annular pin chamber to thereby couple the lifter body to the pin housing. The pin members are configured for moving toward each other when the pin chamber is pressurized, thereby retracting the pin members from within the annular pin chamber and decoupling the lifter body from the pin housing.

Abstract translation: 一种停用液压气门挺杆包括具有基本圆柱形内壁的细长升降机体。 内壁在其中限定至少一个环形销室。 提升机体具有构造成用于接合发动机的凸轮的第一端。 细长销壳体包括基本上圆柱形的销壳体壁和销壳体底部。 销壳体壁包括内表面和外表面。 销壳体底部限定穿过其中的径向定位的销孔。 销壳体同心地设置在升降机主体的内壁内，使得销壳体壁的外表面与升降机主体的内壁的至少一部分相邻。 具有具有外表面的基本上圆柱形的柱塞壁的柱塞同心地设置在销壳体内，使得柱塞壁的外表面与销壳体壁的内表面的至少一部分相邻。 钝销销组件设置在销孔内并且包括两个销构件。 销构件相对于彼此径向向外偏置。 每个销构件的一部分设置在环形销腔内，从而将升降器主体联接到销壳体。 销构件被构造成当销腔被加压时朝向彼此移动，从而从销环室内缩回销构件并且将升降器本体与销壳体分离。

公开(公告)号：US6039018A

公开(公告)日：2000-03-21

申请号：US252144

申请日：1999-02-18

Applicant: Mark James Spath

Inventor： Mark James Spath

IPC: F01L1/24 ,  F01L1/25

CPC classification number: F01L1/25 ,  F01L1/2405

Abstract: A hydraulic lash adjuster having, in preferred embodiments, a body carrying a reciprocable plunger defining with a closed end of the body, a high pressure oil chamber from which oil may escape through a primary clearance between the plunger and body. Make up oil is fed from a low pressure chamber defined within the plunger. Thermal pump up of the lash adjuster is prevented by a control ring within the plunger which varies the leakdown path with oil temperature so that normal flow is attained at normal engine operating temperature and the clearance is increased to maintain adequate flow at cold engine starting and operating temperatures. In a first embodiment, the control ring forces the side wall of the plunger outward to reduce the primary clearance between the plunger and body. In a second embodiment, the control ring is loose in the plunger and controls a secondary clearance between the control ring and side wall of the plunger which allows higher flow at low temperatures and is reduced or eliminated at normal operating temperatures so that the primary clearance is controlling.

Abstract translation: 在优选实施例中，液压间隙调节器具有承载定位于主体的封闭端的往复式柱塞的主体，高压油室，油可通过该高压油室从柱塞和主体之间的主要间隙排出。 补充油从柱塞内定义的低压室进料。 间隙调节器的热泵通过柱塞内的控制环防止，该控制环改变了油温度的泄漏路径，使得在正常发动机工作温度下达到正常流量，并且增加间隙以在冷发动机启动和运行时保持足够的流量 温度。 在第一实施例中，控制环迫使柱塞的侧壁向外以减小柱塞和主体之间的主要间隙。 在第二实施例中，控制环在柱塞中松动并且控制柱塞的控制环和侧壁之间的二次间隙，其允许在低温下更高的流量并且在正常操作温度下被减少或消除，使得初次间隙为 控制。

公开(公告)号：US06325030B1

公开(公告)日：2001-12-04

申请号：US09664668

申请日：2000-09-19

Applicant: Mark James Spath ,  Hermes A. Fernandez ,  Nick John Hendriksma

Inventor： Mark James Spath ,  Hermes A. Fernandez ,  Nick John Hendriksma

IPC: F01L1300

CPC classification number: F01L1/185 ,  F01L1/18 ,  F01L13/0036 ,  F01L2001/186 ,  F01L2105/00

Abstract: A roller finger follower includes an elongate body having a first side and a second side. A first end and a second end interconnect and space apart the first and second sides. The first and second sides define a first and second pin orifice, respectively. A roller is disposed between the first and second sides intermediate the first and second ends of the body. The roller defines a shaft orifice therethrough. An elongate shaft extends transversely through the shaft orifice and has a first shaft end and a second shaft end. The first shaft end is disposed proximate the first side and the second shaft end is disposed proximate the second side. The first shaft end defines a pin chamber therein, the second shaft end defines a shaft bore therein. The shaft bore is concentric with and intersects the pin chamber. A locking pin assembly is disposed within each of the shaft bore, the pin chamber, and at least one of the pin orifices. The locking pin assembly has a default position wherein the shaft is coupled to the body, and a decoupled position wherein the shaft is decoupled from the body. The locking pin assembly is switchable between the default position and the decoupled position.

Abstract translation: 辊指从动件包括具有第一侧和第二侧的细长主体。 第一端和第二端互连并且分开第一和第二侧的空间。 第一和第二侧分别限定第一和第二销孔。 辊子位于身体的第一和第二端之间的第一和第二侧之间。 辊定义了通过其中的轴孔。 细长轴横向延伸穿过轴孔，并具有第一轴端和第二轴端。 第一轴端设置在第一侧附近，并且第二轴端靠近第二侧设置。 第一轴端在其中限定销腔，第二轴端在其中限定轴孔。 轴孔与销腔同心并与销腔相交。 锁定销组件设置在每个轴孔，销腔室和销孔中的至少一个中。 锁定销组件具有其中轴联接到主体的默认位置，以及脱离位置，其中轴与主体分离。 锁定销组件可在默认位置和解耦位置之间切换。

公开(公告)号：US5934232A

公开(公告)日：1999-08-10

申请号：US97117

申请日：1998-06-12

Applicant: Cynthia Ann Greene ,  Mark James Spath ,  Michael James Fox

Inventor： Cynthia Ann Greene ,  Mark James Spath ,  Michael James Fox

IPC: F01L1/14 ,  F01L1/245 ,  F01L13/00

CPC classification number: F01L1/14 ,  F01L1/146 ,  F01L1/245 ,  F01L13/0036 ,  F01L2105/00 ,  F01L2107/00

Abstract: 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.

Abstract translation: 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。