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公开(公告)号：US4977867A
公开(公告)日：1990-12-18
申请号：US502768
申请日：1990-04-02
Applicant: Jack L. Rhoads
Inventor： Jack L. Rhoads
CPC classification number: F01L1/08 , F01L1/245 , F01L13/0031 , F01L2820/01
Abstract: A self-adjusting variable duration hydraulic lifter utilizes two plungers within the cylindrical lifter body which move together to shorten the overall top-to-bottom length of the internal plunger pair during the valve opening cycle of the engine at low RPM's to improve engine performance. A pre-established gap between the two plungers establishes the bleed down amount for the lifter at low RPM, and the gap is self-adjusting in that it will remain the same over the lifetime of the engine despite changes in the overall length of the valve train and heat compensation effected by the hydraulic mechanism effected by the lifter.
Abstract translation: 自动调节可变持续时间液压升降器利用圆柱形升降机主体内的两个柱塞，它们在发动机的低转速下的开阀循环期间一起移动，以缩短内部柱塞对的整体顶部至底部长度，以改善发动机性能。 两个柱塞之间的预先确定的间隙在低RPM下建立了升降机的泄放量，并且间隙是自调节的，因为在发动机的整个寿命期间变化将保持相同，尽管阀的总长度发生变化 由升降机实现的液压机构实现的列车和热补偿。
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公开(公告)号：US4913106A
公开(公告)日：1990-04-03
申请号：US398883
申请日：1989-08-28
Applicant: Jack L. Rhoads
Inventor： Jack L. Rhoads
CPC classification number: F01L13/0031 , F01L1/08 , F01L1/245
Abstract: Improvements are provided to the variable duration lifter, and the valve train of which the lifter is a part, which have the effect of reducing the tapping noise of the valves at low RPM, which is characteristic of effective variable duration lifters. This is achieved by utilizing an effective length of the valve train which produces a reduced volume of the oil reservoir defined between the outer cylinder of the lifter and the internal plunger, such that when the engine operates at low RPM, the internal plunger "bottoms out" before the valve seats. This is coupled with a modified cam having a closing ramp which seats the valve more smoothly and quietly than does the conventional ramp. To further insure the quiet seating of the valve at the appropriate point of cam rotation, the bleed passageway of the lifter plunger is enlarged in cross-section in the preferred embodiment, and to reduce trauma on the underside of the lifter, a groove or flat is ground down the entire length of the external cylinder of the lifter which, by virtue of being in communication with the oil gallery, provides lubrication for the cam-following bottom of the lifter body.
Abstract translation: 改进提供给可变持续时间提升器，并且提升器是其一部分的气门机构，其具有降低低RPM的阀门的攻丝噪声的作用，这是有效可变持续时间提升器的特征。 这是通过利用有效长度的气门机构实现的，其产生减小了在提升器的外部气缸和内部柱塞之间限定的储油容积，使得当发动机以低RPM运行时，内部柱塞“底部出来 “阀座前。 这与具有闭合斜坡的改进的凸轮相结合，其比常规斜坡更安静地安置阀。 为了进一步确保阀门在适当的凸轮旋转点处的安静的位置，在优选实施例中，升降器柱塞的排放通道的横截面增大，并且为了减少升降机的下侧的创伤，凹槽或平面 在升降机的外筒的整个长度上被磨平，其通过与油库连通，为升降机主体的凸轮接合底部提供润滑。
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公开(公告)号：US4864982A
公开(公告)日：1989-09-12
申请号：US575915
申请日：1984-02-01
Applicant: Walter Speil
Inventor： Walter Speil
CPC classification number: F01L1/245 , F01L1/2411 , F01L1/25 , F01L1/252
Abstract: A novel inner element for hydraulic valve play compensation element for irnal combustion engines comprised of a cylindrical element (1) closed at one end, (2) a piston element (3) guided therein for longitudinal displacement and a helical spring (8) in the cylindrical element (1) bearing against the inner surface of the closed end (2) and against the piston element (3) characterized in that the bore (4) of the cylindrical element (1) is provided adjacent to the closed end (2) with an increased diameter (9) and contiguous to the end of piston element (3) at the closed end (2) of the cylindrical element (1) is a structural element (8,10) provided with at least one projection (11) engaging the increased diameter (9) of the bore (4).
Abstract translation: 一种用于内燃机的液压阀游隙补偿元件的新型内元件，其包括在一端封闭的圆柱形元件（1），（2）在其中被引导用于纵向移动的活塞元件（3）和在其中的螺旋弹簧（8） 圆柱形元件（1），其抵靠封闭端（2）的内表面并抵靠活塞元件（3），其特征在于，圆柱形元件（1）的孔（4）邻近封闭端（2）设置， 在圆柱形元件（1）的封闭端（2）处具有增加的直径（9）并且邻近活塞元件（3）的端部的是具有至少一个突起（11）的结构元件（8,10） 接合孔（4）的增加的直径（9）。
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公开(公告)号：US4708102A
公开(公告)日：1987-11-24
申请号：US904723
申请日：1986-09-08
Applicant: Karl J. Schmid
Inventor： Karl J. Schmid
CPC classification number: F01L1/245 , F01L1/14 , F01M9/10 , F01L2105/02 , F01M9/104
Abstract: A hydraulic roller cam follower for an internal combustion engine having an integral cylindrical body including an annular oil receiving exterior groove for receiving oil from the engine oil supply and an enclosed recess opening in the lower end including spaced sidewalls, and a roller having a central bore mounted by a pin extending into the sidewalls of the recess wherein a lubricating oil passage extends through the body from the annular groove through the sidewall and into the recess having an outlet disposed to direct a supply of pressurized lubricating oil to the entrance of the roller bore.
Abstract translation: 一种用于内燃机的液压滚子凸轮从动件，其具有一体的圆柱体，该圆柱体包括用于接收来自发动机油供应源的油的环形油接收外部凹槽和包括间隔开的侧壁的下端中的封闭凹部开口，以及具有中心孔 通过延伸到凹部的侧壁中的销安装，其中润滑油通道从环形槽穿过主体延伸通过侧壁并进入凹部，该出口设置成将加压润滑油的供应引导到辊孔的入口 。
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公开(公告)号：US4524731A
公开(公告)日：1985-06-25
申请号：US523119
申请日：1983-08-15
Applicant: Jack L. Rhoads
Inventor： Jack L. Rhoads
CPC classification number: F01L13/0031 , F01L1/245 , F01L2103/00 , F01L2103/01 , Y10T29/49247
Abstract: A hydraulic valve lifter for use in high performance engines to reduce valve overlap at low operating speeds utilizes a restricted oil bleed passageway leading from the lifter pressure chamber to externally of the lifter to permit oil to bleed from the pressure chamber, preventing the lifter from pumping up to a fully solid condition at low operating speeds; the passageway, however, is sufficiently narrowed to pass an insignificant volume of oil therethrough at higher speeds. This passageway, previously defined as an external flat ground partway up the lifter plunger, is, according to the instant disclosure, ground fully up to the top of the plunger. This permits the plungers to be ground much more easily than before, inasmuch as they can be axially aligned on a magnetic chuck, or the equivalent, with the flat or groove which defines the bleed passageway cut in a single stroke, or several unhalting strokes, across an entire set of the lifter plungers.
Abstract translation: 用于高性能发动机的液压气门升降器在低运行速度下减少阀重叠利用从提升压力室引导到升降机外部的限制排油通道，以允许油从压力室排出，防止升降机泵送 在低运行速度下达到完全固态; 然而，通道被充分地变窄以便以较高的速度通过不明显的体积的油。 根据本公开，先前被定义为升降器柱塞的一部分的外部平坦地面的该通道完全被研磨到柱塞的顶部。 这允许柱塞比以前容易地被磨削，因为它们可以在磁性卡盘或等同物上轴向对准，其中限定了一次冲程的排气通道的平面或凹槽，或者几个脱气冲程， 跨越整套升降器活塞。
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Patent Agency Ranking
公开(公告)号：US4457270A
公开(公告)日：1984-07-03
申请号：US483705
申请日：1983-04-11
Applicant: Hisashi Kodama , Katsujiro Sato , Tetsuomi Tamura , Tooru Hamamoto , Kazuharu Yamada
Inventor： Hisashi Kodama , Katsujiro Sato , Tetsuomi Tamura , Tooru Hamamoto , Kazuharu Yamada
CPC classification number: F01L1/245 , F01L2109/00
Abstract: An oil-containing hydraulic lifter for lash adjustment comprising relatively movable cylinder and plunger members defining a pressure chamber between their closed ends and a reservoir chamber within the plunger. Means are provided for rapid, one-way flow of the oil from the reservoir to the pressure chamber during outward movement of the plunger and for slow, one-way flow from the pressure to the reservoir chamber during inward movement of the plunger. A flexible, bag-shaped diaphragm extending into the reservoir chamber has its open, upper end sealed liquid tightly to the inner wall of the reservoir for sealing in the oil while expanding and collapsing with reciprocation of the plunger. The reservoir chamber has an increased diameter at that part where the diaphragm undergoes most of its expansion and collapse, thereby spacing the inner wall of the reservoir chamber from the diaphragm by a distance great enough to allow full expansion of the diaphragm in the expanding and collapsing operation thereof. The effect is to greatly increase the volumetric change exhibited by the oil within the reservoir chamber during the reciprocation of the plunger, thereby enhancing lash adjusting performance.
Abstract translation: 一种用于间隙调节的含油液压提升器，包括相对可移动的气缸和柱塞构件，其在其封闭端部之间限定压力室和柱塞内的储存室。 提供装置用于在柱塞的向外运动期间将油从储存器快速地单向流动到压力室，并且用于在柱塞的向内运动期间从压力到储存室的缓慢单向流动。 延伸到储存室中的柔性袋形隔膜具有开口的上端密封液体，紧密地连接到储存器的内壁，用于密封油中，同时随着柱塞的往复运动而膨胀和折叠。 储存室在该部分处具有增加的直径，其中隔膜经历其大部分膨胀和塌陷，从而将储存室的内壁与隔膜间隔足够大的距离，以允许隔膜在膨胀和塌缩中完全膨胀 操作。 其效果是在柱塞往复运动的过程中，大大增加储槽内的油体积变化，从而增强间隙调整性能。
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公开(公告)号：US4347812A
公开(公告)日：1982-09-07
申请号：US034186
申请日：1979-04-27
Applicant: Tooru Kosuda , Michihiro Ohashi , Yasuhiro Takeuchi , Tadahide Toda , Noboru Matsubara , Masaaki Takizawa
Inventor： Tooru Kosuda , Michihiro Ohashi , Yasuhiro Takeuchi , Tadahide Toda , Noboru Matsubara , Masaaki Takizawa
CPC classification number: F01L1/245
Abstract: A hydraulic valve lift device for transmitting the motion of a cam to a push rod of an intake or exhaust valve of an engine, including a housing, a lifter slidably engaged by the housing and provided therein with an oil pressure chamber adapted to receive an oil, and a plunger provided with a flange portion and slidable in relation to the lifter. The flange portion of the plunger and cylindrical bore of the housing cooperate with each other to define therebetween a braking chamber into which oil is introduced. The device has a slit through which the oil in the braking chamber is relieved to the outside. The arrangement is such that the rate of oil relieved through the braking chamber is reduced as the plunger is lowered. The device further includes a relief valve for maintaining the pressure in the braking chamber below a predetermined pressure level.
Abstract translation: 一种用于将凸轮的运动传递到发动机的进气门或排气门的推杆的液压气门提升装置，所述推动杆包括壳体，由所述壳体可滑动地接合并在其中设置有适于容纳油的油压室的升降器 以及设置有凸缘部分并且可相对于升降机滑动的柱塞。 柱塞的凸缘部分和壳体的圆柱孔相互配合，以在其间限定引入油的制动室。 该装置具有狭缝，制动室中的油通过狭缝释放到外部。 这样一来，随着柱塞的降低，通过制动室释放的油的速度降低。 该装置还包括用于将制动室中的压力保持在预定压力水平以下的安全阀。
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公开(公告)号：US4248045A
公开(公告)日：1981-02-03
申请号：US26965
申请日：1979-04-04
Applicant: David L. Turner
Inventor： David L. Turner
CPC classification number: F01L9/02 , F01L1/245 , F01L13/0005
Abstract: Drive is transmitted from a cam to a push rod via a body of liquid trapped between two pistons. A control element is normally urged against a seat by pressure in the body of liquid but can be lifted off its seat by the application of pressure to liquid in a control chamber. When the control element moves clear of its seat, liquid trapped between the pistons acts on a seat-engaging face of the control element and displaces the control element instead of driving the push rod.
Abstract translation: 驱动器通过被捕获在两个活塞之间的液体体从凸轮传递到推杆。 控制元件通常通过液体中的压力被推靠在座椅上，但是可以通过对控制室中的液体施加压力而将其提升离开其座椅。 当控制元件从其座位移开时，捕获在活塞之间的液体作用在控制元件的座接合面上，并使控制元件移位而不是驱动推杆。
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公开(公告)号：US4164917A
公开(公告)日：1979-08-21
申请号：US825178
申请日：1977-08-16
Applicant: Richard E. Glasson
Inventor： Richard E. Glasson
Abstract: A hydraulic tappet or lash adjuster of simplified design is disclosed for use in the valve train of an internal combustion engine equipped with dual ramp cams. In one embodiment, the disclosed tappet is designed to respond to the presence or absence of control pressure supplied through a single supply port to cause variation in the timed relationship of valve opening and piston movement whereby the internal combustion engine may be operated in a power mode or a braking mode. In another embodiment, a pressure relief outlet is provided in the tappet for cooperation with a pressure relief port to insure collapse of the tappet thereby to prevent the valve from being opened beyond a pre-determined fully open position.
Abstract translation: 公开了一种简化设计的液压挺杆或间隙调节器，用于装配有双斜坡凸轮的内燃机的气门机构。 在一个实施例中，所公开的挺杆被设计为响应通过单个供应端口提供的控制压力的存在或不存在，以引起阀开启和活塞运动的定时关系的变化，由此内燃机可以以功率模式 或制动模式。 在另一个实施例中，在挺杆中设置有一个泄压出口，用于与减压端口配合，以确保挺杆的塌缩，从而防止阀门超出预定的完全打开位置。
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公开(公告)号：US4133332A
公开(公告)日：1979-01-09
申请号：US841682
申请日：1977-10-13
Applicant: Carl F. Benson , Harold W. Humphrey, Jr.
Inventor： Carl F. Benson , Harold W. Humphrey, Jr.
CPC classification number: F01L13/0031 , F01L1/245 , F01L13/0005 , F01L9/023
Abstract: A tappet or valve lifter is used in an internal combustion engine. The operation of the tappet is hydraulically controlled to selectively stop or start the operation of the engine combustion chamber poppet valve. Tappets may be included in both the intake system and the exhaust system of each cylinder.
Abstract translation: 在内燃机中使用挺杆或气门挺杆。 挺杆的操作是液压控制的，以选择性地停止或开始发动机燃烧室提升阀的操作。 每个气缸的进气系统和排气系统都可以包括挺杆。
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