Abstract: A tappet (1) for a high-pressure fuel pump having a housing (2), the drive input side (7), which serves as a cam run-on face. The housing (2) incorporates a roller (8), wherein the drive output side (3), which serves as a contact surface for a tappet follower part, of said housing (2) bears against an underside (4) of a bridge piece (6) which projects through an inner casing (5) of the housing (2), and a rotation prevention device (11) which projects beyond the outer casing (10) of the housing (2) extends in a window (9) of the housing (2). The rotation prevention device (11) is formed by a radial elongation of the bridge piece (6). A projection extends from the inner casing (5) of the tappet (1) only on a portion situated diametrically opposite the window (7), which projection is integrally connected and is produced by a punching and embossing process and rises in a wedge shape in a direction of the drive input side.

Abstract: The invention relates to a mechanical system, comprising a support element which includes two bores extending along a first axis (X1), a pin which is fitted in the two bores and includes two opposite ends, each adapted to be caulked in one of the two bores, and a roller element which is positioned between the two bores along the first axis (X1) and is movable in rotation relative to the pin around the first axis (X1). At least one bore has at least one radial recess which extends from the bore along a radial direction (D1) relative to the first axis (X1) and is adapted to receive a plastically deformed radial portion of the caulked end of the pin. The invention also relates to an injection pump comprising such a mechanical system and a method for manufacturing such a mechanical system.

Abstract: Provided is a variable valve operating apparatus for an internal combustion engine, which can favorably reduce electric power consumption in a vehicle system that may stop the internal combustion engine during power-up of the vehicle system. A changeover mechanism 90 is provided which is capable of switching between a connection state in which a first rocker arm 96 and a second rocker arm 98 are in connection with each other via a changeover pin 112, 118 and a disconnection state in which the connection is released. The changeover mechanism 90 performs energization of actuators 130 for each cylinder in a case in which fuel supply to the internal combustion engine 12 is stopped in response to an establishment of a predetermined stop condition.

Abstract: An electro-hydraulic variable valve lift apparatus may include a housing, a master portion which is slidably disposed to the housing and contacts a cam, a first oil supply portion which supplies hydraulic pressure, a slave piston which is slidably disposed within the housing and defines an oil chamber with the master portion, a latching portion which is supplied the hydraulic pressure from the first oil supply portion and selectively connects the slave piston and the master portion, a second oil supply portion which selectively supplies hydraulic pressure to the oil chamber so as to control relative distances between the master portion and the slave piston when the slave piston is disengaged with the master portion, and a stepped portion formed to the housing between the master portion and the slave piston to elastically support the master portion.

Abstract: The present invention may be used for vehicle engines having bores in which roller valve lifters reciprocate. A roller valve lifter may have a body with two opposed subtending spaced apart legs. A cam follower roller bearing having a press fit inner sleeve bushing may be rotatably mounted on the pin. Each of the legs may have an oil feed hole that traverses from an exterior surface to an interior surface adjacent to the inner sleeve bushing. The body in an upper portion may have a key device or an attached vertical guide bar to maintain proper orientation of the roller valve lifter to a cam lobe.

Abstract: A follower member (1) for a valve train of an internal combustion engine, the follower member (1) having a roller (3) mounted on a pin (2) for a running contact against a periodic stroke producer, the roller (3) being mounted with an inner peripheral surface (4) on an intermediate ring (5) extending directly on the pin (2) and forming, together with said the (2), an intermediate sliding bearing (6) situated between the intermediate ring (5) and the pin (2), and the intermediate ring (5) protruding beyond two front ends (7) of the roller (3). The intermediate ring (5) has a clearly higher surface hardness than the pin (2).

Abstract: A variable valve lift device equipped with a swing arm variably lifting an exhaust valve or an intake valve may include an outer body in which a mounting groove is formed in the middle portion thereof, an inner body mounted inside the mounting groove of the outer body and with a rear end thereof pivotally-connected to the outer body in the outer body, and a latching portion formed in the outer body and the inner body and fixing or releasing a front end portion of the inner body to the outer body.

Abstract: A cam follower for a ram of a metal can necker machine and a method of making the same. An outer ring has an outer ring bearing surface and an exterior surface defining a groove extending along at least a portion thereof. An inner ring is coaxially in the outer ring and has an inner ring bearing surface. A plurality of rolling elements is disposed in an annular cavity between the outer ring bearing surface and the inner ring bearing surface. The plurality of rolling elements are in rolling engagement with the outer ring bearing surface and the inner ring bearing surface so that the outer ring is rotatable relative to the inner ring about an axis of rotation. A least a portion of the tire is disposed in the groove to inhibit axial movement of the tire relative to the outer ring.

Abstract: A cam indexer includes a driving assembly, a driving plate, a multi-task dial, a latching assembly and a positioning assembly. The driving plate defines an arc-groove at the periphery thereof and a cam surface at the bottom of the arc-groove, the driving plate further includes a receiving end and a resisting end positioned at opposite ends of the cam surface. The multi-task dial defines four positioning grooves along the periphery thereof; the latching assembly is fixed to the driving plate and elastically engages in first one positioning groove, the positioning assembly elastically engages in a second one positioning groove. The latching assembly and the positioning assembly are adapted to detach from the positioning grooves when the driving plate is driven by the driving assembly, such that the cam indexer functions as a partitioning mechanism.

Abstract: A cam device includes a first member including a plurality of cam followers arranged in a row direction and a second member including a rotatable cam with an engaging groove, on an outer circumferential surface thereof, to be engaged with the cam followers, the second member moving relatively with respect to the first member in the row direction by rotating the cam and making the plurality of the cam followers engage successively in the engaging groove, wherein the second member includes a gear that rotates the cam by engaging with the cam, and second teeth that mesh with first teeth of the gear are provided on the outer circumferential surface of the cam.

Abstract: A roller tappet (1) is proposed for a high-pressure fuel pump of an internal combustion engine, having a housing (2), in the case of the drive-side end (3) of which two surfaces (5) which lie diametrically opposite one another and are depressed by an outer shell (4) of the housing (2) are applied with in each case one receptacle (6), in which surfaces (5) a pin (8) is mounted which carries a cam roller (7), wherein an inner shell (9) of the housing (2), axially below the cam roller (7) as viewed in the direction remote from the drive, is penetrated by a bridge piece (10), the output-side end (11) of which has a rest (12) for a tappet following part, wherein the outer shell (4) of the housing (2) which is non-stepped as least as far as possible apart from the surfaces (5) is provided as a closed circumferential ring (14), as viewed in the drive direction immediately above upper sides (13) of the surfaces (5), which upper sides (13) run through the housing (2) in the manner of chords, which closed circumferenti

Abstract: A high-durability cam wheel assembly mounted in a shell of a refrigerant recovery machine is disclosed to include a frame member (1) having rails (12) mounted therein, a sliding block (2) mounted inside the frame member (1) and having a plurality of sliding grooves (21) extending around the periphery thereof and kept in contact with the rails (12) of the frame member (1), and a cam wheel set (3) consisting of a first cam wheel (31) and a second cam wheel (32) arranged at two opposite sides relative to the sliding block (2) and connected to each other in an axle bearing (23) inside the sliding block (2).

Abstract: A valve train for an internal combustion engine includes a camshaft, a valve-operating cam for operating an engine valve, and a link mechanism for swinging the valve-operating cam. The valve train also includes a holder member operable to turn around the camshaft, and a drive mechanism operable to turn the holder member for varying positions of the link mechanism. The drive mechanism includes a ball screw provided perpendicularly to the camshaft, a slider threadably engaged with the ball screw, an arm member swingably attached to the slider, and a connecting bolt having one end secured to an arm-connecting portion of the arm member, and the other end secured to the holder member. In such movable valve train for an internal combustion engine, the holder member and the drive mechanism are connected to each other with a small and lightweight configuration, requiring a minimal number of parts.

Abstract: A V-type internal combustion engine having a variable valve train for keeping the height of the internal combustion engine low. Disclosed is a V-type internal combustion engine with a variable valve train that uses an actuator to vary the phase/lift amount of camshafts. The actuator is mounted on head covers for each of a plurality of cylinder blocks arranged in a V-shape. The actuator is attached to a lateral surface positioned opposite the offset direction of the head covers. In an embodiment, the actuator is attached to a lateral surface of the head covers and positioned close to the inside of the V banks.

Abstract: A cam plate for use with a pump includes at least one camming surface configured to enable an impeller to rotate in a first direction and substantially prevent the impeller from rotating in a second direction opposite the first direction. A ring recess is defined in the cam plate. The ring recess is configured to receive at least a portion of a cam ring that is configured to rotate within the ring recess. A follower recess is at least partially defined by the at least one camming surface and extends from the ring recess. The follower recess is configured to receive at least one cam follower therein.

Abstract: A drum lifter for lifting and moving empty and full chimed and unchimed drums. The lifter includes a cross member with grippers at each end. The grippers include a cam block with a cam rotatably mounted in the cam block.

Abstract: A lifter retainer including a central body portion connected to both a left bank of lifter retaining arms and a right bank of lifter retaining arms. The lifter retainer may be adapted to engage a key portion of one or more lifters to prevent the lifters from rotating during engine operation.

Abstract: A switchable finger lever (1) for a valve train of an internal combustion engine is provided. The finger lever includes an inner lever (2) with a U-shaped cross-section having, on one end (3), outer arms (4) which are made separately from each other and are pivotable relative to the inner lever (2). The outer arms extend, while flanking outer walls (6) of the inner lever (2), in a direction of the other end (5), and have on upper sides (7), running surfaces (7a) for high-lift cams. A support (10) having integrally connected lateral guide tabs (11) for at least one gas exchange valve extend on an underside (8) of a crossbar (9) of the inner lever (2) in a vicinity of the one end (3). An insert (12) having a contact surface (13) for a head of a support element is installed on the another end (5) between side walls (14) of the inner lever (2), and has a coupling slide (15) for an optional connection of the outer arms (4) to the inner lever (2).

Abstract: In an internal combustion engine valve drive train switching device, at least one safety device is provided for preventing an unscheduled switching of a valve train switching unit.

Abstract: A cam shaft is fitted with one or more sleeve bearings to negate friction between the rotating cam shaft and a surface onto which the cam shaft is rotated. A metal sheet is bent upward or downward by rotating cam shafts from a first position to either a second position or a third position. Rotating a cam shaft from the first position to either the second or the third position forces an offset portion of the cam shaft against a side of a U-bend in the metal sheet. The rotation generates a normal force against the U-bend that is translated to a bending of the metal sheet. The rotation also generates a tangential force. The sleeve bearings negate friction that may be generated by the tangential force.

Abstract: An apparatus for adjusting deviation of an engine and a continuously variable valve lift device including the same are provided. The apparatus for adjusting deviation of an engine includes an adjustment member connecting a rocker arm to plural output cams, respectively, to adjust lengths between the rocker arm and the output cams, respectively, so that the lengths become equal to or different from each other. The continuously variable valve lift device includes an eccentric cam shaft with eccentric cams installed on its outer periphery, a rocker arm rotatably installed on the eccentric cams to interlock with plural output cams, and apparatus for adjusting deviation provided on the rocker arm to adjust lengths between the rocker arm and the output cams so that the lengths become equal to or different from each other.

Abstract: In a valve drive arrangement for an internal combustion engine including a camshaft carrying axially movable cam elements provided with cams for operating gas exchange valves of the internal combustion engine and an actuation device having at least one shift element which is provided to shift cam element by means of a shifting gate between opposite axial positions, the valve drive arrangement has a change-over device for changing the axial shift direction of the shift element from one to the opposite axial position.

Abstract: A compliant cam system includes a one-piece cam including: a cam body rotatable with respect to a cam rotational axis and a having a cam body center spaced from the cam rotational axis and an outer surface; and a deflecting arm freely extending from the cam body having a free end elastically deflected toward the cam body in an arm deflected condition. A follower has at least one follower surface in direct contact with the cam outer surface at the deflecting arm. An arm non-deflected condition is defined when the outer surface is in direct contact with the cam follower surface prior to deflection of the deflecting arm. The cam when thereafter rotated with respect to the cam rotational axis acts to move the cam body center toward the follower thereby deflecting the deflecting arm to the deflected condition creating a biasing force acting toward the follower.

Abstract: A compliant cam system includes a cam having a cam body rotatable with respect to a cam rotational axis. The cam body has a cam body center spaced from the cam rotational axis. At least a portion of the cam is an elastically compressible material. A follower having at least one follower surface is in contact with the compressible material portion of the cam. A cam non-deflected condition is defined when an elastically compressible material portion outer surface is in contact with the cam follower surface prior to deflection of the elastically compressible material portion. The cam when thereafter rotated with respect to the cam rotational axis moves the cam body center toward the follower. The elastically compressible material portion deflects, defining a deflected condition, creating a biasing force acting toward the follower, and releasably frictionally engaging the elastically compressible material portion with the follower.

Abstract: A mechanism for compensating systematic uni-directional torque bias imposed on a bi-directional drive actuator shaft, comprising a pallet disposed on an arm for rotation with the actuator shaft. A bucket tappet is engaged by the pallet and contains a helical compression spring. As the actuator shaft rotates and compresses the spring, the load on the pallet increases linearly but the length of the lever arm changes non-linearly at a rate different from the force applied to the pallet. This results in a non-linear torque about the actuator shaft. The torque can be the same at the compression spring preload state as it is at the full load state or it can be biased to be unsymmetrical based on the layout and size of the components and the stroke of the actuator shaft.

Abstract: An internal combustion engine includes a camshaft, a valve, a cam follower and a rocker arm. The cam follower is coupled between the camshaft and the valve. The rocker arm is coupled between the cam follower and the valve. At least one of the cam follower and the rocker arm is configured so as to move through an adjustable distance prior to transmitting motion for moving the valve.

Abstract: The invention proposes a switchable finger lever (1) comprising an inner lever (2) comprising on one end (4), a support (5) for a gas exchange valve and on another end (6), a contact surface (7) for a head of a support element, said inner lever (2) comprising on the one end (4), pivotable outer arms (8) made separately from each other, which outer arms (8) comprise on their upper sides (10), contacting surfaces (11) for high lift cams, a coupling device (12) comprising a coupling slide (13) for simultaneously connecting the outer arms (8) to the inner lever (2) being seated in a section of the another end (6) in the inner lever (2), which coupling slide (13) is seated in an oblong hole (14) extending transversely through the inner lever (2) as also in longitudinal direction of the finger lever (2), the coupling slide (13) comprises two end portions (15) which protrude beyond the outer walls (9),and for effecting coupling, the coupling slide (13) can be displaced with the two end portions (15) partially under

Abstract: The present invention relates to an internal-combustion engine comprising at least one cylinder (10, 12, 14, 16) including intake means with an intake valve (22), exhaust means with an exhaust valve (32) and control means (40, 42) for controlling opening/closing of the valves, said control means comprising drive means (44) and means (56) intended for motion and load transmission between said control means and the valve to be controlled. According to the invention, motion and load transmission means (56) comprise a rocker arm (58) with at least two rockers (72, 74) disengageable from a pad (62) controlling the motion of said valve.

Abstract: In a four-cycle engine, the stiffness of a rocker shaft support portion is increased while avoiding an increase in the size of a cylinder head. The rocker shaft support portion that supports a rocker shaft is integrally formed on the cylinder head so as to be disposed between an engine valve and a camshaft as viewed from an axial direction of the camshaft and the rocker shaft. First reinforcement ribs are integrally disposed in a protruding condition on a plane orthogonal to an axis of a rocker shaft on a side face of rocker shaft support portions opposite a side of a camshaft.

Abstract: A switchable finger lever for a valve train of an internal combustion engine, said finger lever comprising an inner lever comprising on an underside on one end, a support for a gas exchange valve and on another end, a contact surface for a head of a support element, said inner lever further comprising on the one end, axle stubs protruding on two sides of the inner lever, a first outer arm extending for pivoting relative to the inner lever on one of the axle stubs and a second outer arm extending for pivoting relative to the inner lever on another one of the axle stubs, said outer arms extending in direction of the another end while flanking outer walls of the inner lever and being made as separate parts from each other, a cam contacting surface being arranged on an upper side of each outer arm while, in the region of the another end, a coupling device for an optional connection of the outer arms to the inner lever is seated in the inner lever, and a restoring spring means for each outer arm acts at one end ag

Abstract: A switchable component (1) of a valve train of an internal combustion engine is provided, with a housing (2) in whose borehole (3) an inner element (4) is held so that it can move telescopically. At least one coupling piston (7) guided by an anti-rotation locking device (6) is located in a radial borehole (5) of the inner element (4) in a decoupled case, with a section (10) that is flattened in some areas being provided on the coupling piston on one axial side (9) starting from its outer end (8). The borehole (3) of the housing (2) has a window (11) with a complementary engagement surface (12) against which, in a coupled case, the coupling piston (7) can be displaced with its flattened section (10) when passing through the cam base circle. An edge (13) between the outer end (8) and the flattened section (10) of the coupling piston (7) is provided with a bevel (14) that is a surface section of an ellipsoid whose longitudinal axis runs parallel to the flattened section (10).

Abstract: A valve gear for an internal combustion engine having a sub-rocker arm return spring that is shortened in a longitudinal length of a cylinder. The valve gear for the internal combustion engine is provided with a camshaft, an intake cam turning integrally with the camshaft, a valve cam for opening and closing an engine valve, a link mechanism for transmitting a valve driving force to the valve cam, a holder for supporting a sub-rocker arm support and a driving mechanism for varying a fulcrum position of the link mechanism. A valve operating characteristic can be varied with an oscillating position of the sub-rocker arm support. A sub-rocker arm is provided with a roller, an eccentrically disposed step and a link section. The step is provided with a spring socket, and a return spring is arranged intervening between the spring socket and the holder.

Abstract: A valve motion for an internal combustion engine which suppresses the height of the internal combustion engine low. In a valve motion for an internal combustion engine, a driving mechanism includes a ball screw disposed over an intake side camshaft and an exhaust side camshaft and having threaded portions provided thereon which are threaded in different directions from each other on the intake side and the exhaust side. Sliders are individually provided on the intake side and exhaust side and movable on the ball screw with connecting link members provided between the sliders and a holder member.

Abstract: A cam and cam follower apparatus translates linear cam bar movement to perpendicular valve stem actuation in an injection molding system. The cam bars reciprocate up and down on linear bearing rails such that an actuation plate, fitted with a plurality of valve stems, is cycled normal to the direction of the cam bar movement via cam followers traveling within cam slots in the cam bars. The cam slots in the cam bars are profiled such that the cam followers affect the speed and force at which the valve stems travel while at the same time reducing frictional effects and their associated power requirement. The cam followers of the valve stem actuation plate travel in cam slots in the cam bars from a valve stem forward position, to a valve stem retracted position and ultimately, the entire actuation plate may be removed from the cam bars for maintenance via open ended slots in the cam bars.

Abstract: A deactivating rocker arm for use with a cam having at least one no-lift safety lobe is provided. Safety lobe contacting surfaces on the rocker arm are configured for contact with safety lobes during abnormal operation of the rocker arm. When the rocker arm is deactivated, the safety lobe contacting surfaces may come into contact with safety lobes when excessive pump-up of a lash adjuster brings the rocker arm undesirably close to the rotating cam. This contact limits the range of motion of the rocker arm during certain instances of abnormal operation, promoting more effective transition between deactivated and activated states and preventing damaging contact between the rocker arm and the cam lobe.

Abstract: In an internal combustion engine, a variable valve-actuating mechanism includes a trigger pin operable to permit axial movement of a rocker arm concurrently with a axial movement of a rocker arm shaft. A retention member has an insertion aperture formed therein, in which the trigger pin is inserted, and which slidably supports the trigger pin in the inserting direction. The trigger pin includes upper and lower expanded portions disposed on both sides thereof in the inserting direction. The upper and lower expanded portions of the trigger pin are operable to disable sliding motion of the trigger pin, relative to the retention member, beyond a predetermined range. The upper and lower expanded portions allow the trigger pin to be integrally assembled in the insertion aperture of the retention member, so as to be selectively retained therein.

Abstract: In an internal combustion engine using poppet type valves, a center pivot rocker arm is moved through a specific path wherein the roller in contact with a cam is moved to alter the phasing of the valves or injectors in the engine. Depending on the interface between the valve or injector and the rocker arm, the rocker ratio of the rocker arm may be altered, giving a change in lift as well. By positioning a control arm at desired points on either side of a centered position, and rotating the control arm about its own pivot point via an arm actuator, phase change is achieved. The arm actuator controls the location of the control arm and thus the timing of the valve or injector relative to the rotation of the cam. Advanced, centered, and retarded phase change is possible depending upon the movement of the control arm.

Abstract: An object of the present invention is to provide a compact and low cost cam follower by using a strong stud which does not have severed fiber flow due to cutting process and has a continuous fiber flow throughout all portions. A cam follower is constituted by an outer ring which has an outer track surface in its inner circumference; a stud which has an inner track surface opposed to the outer track surface, a flange portion abutting on one side of the inner track surface, a side plate fitting portion and a mounting shaft portion abutting on another side of the inner track surface in this order, and a fiber flow formed continuously from the flange portion to the inner track surface along their outer circumferences; rolling elements which are arranged between the outer track surface and inner track surface; and an inner side plate which is pressed into the side plate fitting portion to work with the flange portion for limiting axial movement of the outer ring and the rolling elements.

Abstract: An Antirotation device for an element being moveable back and forth along an axis, particularly a periodically actuable tappet for a valve train or a pump, comprises following features: The device is substantially mushroom-shaped consisting of one trunk section and one head section, the trunk section is circular-cylindrical-like and designed to be arranged in a circular hole or cavity of said element, particularly of a hollow circular-cylindrical part of said element, and the head section is between a longitudinal cut-off of a circular-like cylinder and a cut-off of a spherical and designed to slide in a guide of a bore surrounding said element.

Abstract: An end pivot valve train is provided in a cylinder head to open and close a cylinder valve. The end pivot valve train includes a cam follower forcing the cylinder valve, and a cam holder assembled onto an upper portion of the cylinder head and includes a receiving groove to receive the cam follower therein, wherein the cam holder has a protrusion configured and dimensioned to interfere with an upper surface of the cam follower when the cam follower rotates such that a longitudinal edge thereof moves up.

Abstract: A deactivating hydraulic lash adjuster comprising a pin housing slidably disposed in a body and having at least one lock pin disposed in a transverse bore for extending into a receiver feature in the body to lock the two together during periods of engine operation in valve non-deactivation mode. The present improvement consists in providing a first orienting feature for the lash adjuster body that engages a second orienting feature on an engine head to provide a preferred and fixed orientation of the body within a bore in the engine head. In a currently preferred orientation, the axis of the at least one lock pin is parallel to the axis of the engine camshaft. The orientation of the lock pin(s) to the body is made invariant by insertion of a pin through a radial bore in the body into a longitudinal groove in the pin housing.

Abstract: A valve operating device that opens and closes a valve of an internal combustion engine by driving a valve stem in an axial direction includes a rocker cam that rocks in accordance with a rotation of a drive shaft and has a driving cam portion and a lift restricting cam portion; a cam follower that lifts the valve by contacting the driving cam portion slidingly; and a restricting member that prevents the cam follower from separating from the driving cam portion in cooperation with the lift restricting cam portion. A gap is formed between the restricting member and the rocker cam in a state where the cam follower is in contact with the driving cam portion and disappears such that the restricting member and the rocker cam come into contact with each other only when the cam follower separates from the driving cam portion.

Abstract: The invention relates to a high pressure pump for a fuel injection device of an internal combustion engine, comprising at least one pump element having a pump piston delimiting a pump working chamber, wherein between the pump piston and a rotationally driven drive shaft of the high pressure pump, a tappet assembly having a tappet body and a roller shoe pressed into a receptacle of the tappet body is provided, wherein the tappet body comprises a centering guide for pressing in the roller shoe. The invention further relates to a tappet assembly for a high pressure pump for a fuel injection device of an internal combustion engine comprising a tappet body and a roller shoe pressed into a receptacle of the tappet body, wherein the tappet body comprises a centering guide for pressing in the roller shoe.

Abstract: A transmission parking lock and an actuating element (1) for the parking lock. The actuating element includes a pull rod (2) and a roller carrier (3) on which are arranged a first roller (13) for rolling on a first rolling surface on the pawl of the parking lock and a second roller (14) for rolling on a second rolling surface on a guide element, such that the roller carrier (3) can be moved along a predetermined path in the longitudinal direction of the pull rod (2). The roller carrier (3) can move longitudinally on the pull rod (2).

Abstract: A continuously variable valve lift device may include a vibration link having one end eccentrically and rotatably coupled to a rotation shaft, a rocker arm having a middle portion pivotally coupled to the other end of the vibration link, an advance lever having one end coupled to the one end of the rocker arm to select advance or delay, a swivel cam link having one end pivotally coupled to the other end of the rocker arm, and a swivel cam, one end of which is pivotally coupled to the other end of the swivel cam link and the other end of which is pivotally coupled to a stationary shaft to open and close a valve.

Abstract: An anti-cogging apparatus improves rotation of a rotatable shaft about an axis. The shaft has a cyclical cogging torque acting thereon in a first direction. The anti-cogging apparatus includes a first anti-cogging member and a second anti-cogging member that rotate relative to each other in concert with rotation of the shaft, and the anti-cogging members interact to provide an anti-cogging torque to the shaft in a second direction to at least partially offset the cogging torque.

Abstract: A mechanism for actuating a poppet valve (28) of an internal combustion engine, comprises two coaxially mounted cams (12,14), cam followers (18,20) in contact with the respective cams (12,14) mounted on a common summation lever (16) which is movable in proportion to the instantaneous sum of the lifts of the two cams (12,14), and a rocker (24) pivotably connected to the summation lever (16) and serving to open the engine valve (28). The rocker is pivotable about a pivot (126) having a fixed preset position and a control spring (134) is provided between the summation lever (16) and a fixed point on the engine to urge the rocker (24) into contact with the tip of the valve (28) and the pivot (126) while the valve is closed.

Abstract: A cam follower for a high-pressure fuel pump of an internal combustion engine, which has a cam roller that is accommodated in a pocket of the cam follower. The cam roller has a bore and the bore is mounted by on a pin which is seated at the ends in receptacles of opposite walls of the pocket. The cam roller runs with its end sides directly in front of the walls. Each end side of the cam roller takes the form of an outer surface of a spherical zone, and each wall is smooth and straight, at least in the region of its run-on piece at the respective end side of the cam roller.

Abstract: The present invention provides a valve lifter, including a buffer layer, a Me diamond-like carbon layer having a thickness of 0.3˜0.6 ?m, and a diamond-like carbon layer having a thickness of 1˜1.5 ?m and a SP3 bonding fraction of 60˜70%, which are sequentially formed on a base body which is subjected to carbonitriding treatment. The valve lifter can exhibit superior low-friction characteristics and wear resistance.

Abstract: A cam follower for a valve drive of an internal combustion engine. The cam follower has a housing and a cam roller. The cam roller is arranged between the side walls of the housing and is mounted on a journal which bridges the side walls. The cam roller, which has an outer ring, a rolling body set and an inner ring, is a combined plain and rolling bearing. The outer ring and the inner ring are in sliding contact with one another, and the rolling body set is arranged between the inner ring and the journal.