Rocker Patents (Class 123/90.39)
  • Patent number: 10731517
    Abstract: A valvetrain includes a rocker arm assembly having a rocker arm and an electromagnetic latch assembly. A magnet of the latch assembly is housed within a chamber formed by the rocker arm. The chamber may be a retrofit hydraulic chamber. The magnet may be an electromagnet or a permanent magnet. A flux shifting bi-stable latch provides a sufficiently compact design. Isolation of the magnet within the rocker arm chamber may provide protection from metal particles carried by oil in an operating environment for the rocker arm assembly.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: August 4, 2020
    Assignee: Eaton Intelligent Power Limited
    Inventors: Petr Liskar, Dale Arden Stretch, James Edward McCarthy, Nicholas Peter Gillette, Andrei Dan Radulescu
  • Patent number: 10704429
    Abstract: A rocker arm includes an outer arm and an inner arm which selectively pivots relative to the outer arm. The rocker arm also includes a lock pin which is displaced along a lock pin axis between a coupled position and a decoupled position. The rocker arm also includes a linkage and a linkage guide which guides the linkage along a linkage axis. One surface of the linkage engages an actuator while another surface of the linkage engages the lock pin such that the linkage translates motion from the actuator to motion of the lock pin.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: July 7, 2020
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Robert M. Mariuz, Kevin R. Keegan, Peter R. Charles, Hermes A. Fernandez
  • Patent number: 10697331
    Abstract: A retention device for interconnecting a lash adjuster and a finger follower that supports a bearing of a valve actuating mechanism for an internal combustion engine, wherein the retention device includes a body having a lower member, an upper member spaced from the lower member, and an intermediate member interconnecting the lower and upper members. The lower member includes an aperture that is adapted to be received in a groove of the lash adjuster. The intermediate member is secured to the finger follower such that the retention device interconnects the lash adjuster and the finger follower. The upper member includes a bearing retention mechanism that limits movement of the bearing of the finger follower and retains the bearing relative to the finger follower prior to mounting the finger follower and lash adjuster as a part of the valve actuating mechanism of the internal combustion engine.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: June 30, 2020
    Assignee: GT Technologies
    Inventors: Mark Meyers, Luke Gossman, John Brune
  • Patent number: 10662826
    Abstract: A method of operating an internal combustion engine that includes a valvetrain having a rocker arm assembly including a rocker arm on which a latch pin is mounted. An actuator for the latch pin, including an electromagnet, is mounted separately from the rocker arm. Rocker arm position information is obtained by gathering and analyzing data relating to a current or voltage in an electrical circuit that is operative to power the electromagnet. The rocker arm position information is used to perform a diagnostic.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: May 26, 2020
    Assignee: Eaton Intelligent Power Limited
    Inventors: Douglas Anthony Hughes, Matthew Richard Busdiecker, Dale Arden Stretch
  • Patent number: 10641136
    Abstract: A valve train for an internal combustion engine may include a cam shaft and a cam follower. The valve train may also include a first cam arranged on the cam shaft for conjoined rotation, and a second cam for conjoined rotation, arranged on the cam shaft axially adjacent to the first cam. The cam follower may be axially adjustable between a first position, in which the cam follower is drive-connected to the first cam, and a second position, in which the cam follower is drive-connected to the second cam. The cam follower may also include a mechanical adjustment device interacting with the cam shaft for axially adjusting the cam follower between the first position and the second position.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: May 5, 2020
    Assignee: MAHLE INTERNATIONAL GMBH
    Inventor: Patrick Altherr
  • Patent number: 10641138
    Abstract: A valve drive for an internal combustion engine may include a cam shaft, a cam follower, and an adjusting device. The cam shaft may include at least one first cam and at least one second cam The cam follower may be drivingly connected to the at least one first cam when in a first position and drivingly connected to the at least one second cam when in a second position. The adjusting device may include a first engagement element configured to cooperate with a first sliding guide and a second engagement element configured to cooperate with a second sliding guide. The first engagement element and the second engagement element may be adjustable between a switching position and an inactive position. The adjusting device may further include a joint actuator configured to adjust at least one of the first engagement element and the second engagement element into the switching position.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: May 5, 2020
    Assignee: Mahle International GmbH
    Inventors: Patrick Altherr, Thorsten Ihne, Markus Walch
  • Patent number: 10590809
    Abstract: A valve train assembly having a valve train carrier including a body having a cartridge cavity formed in the body, a hydraulic lash adjuster adjustment (HLA) assembly, and a cartridge removably disposed in the cartridge cavity. The cartridge includes a main body defining an inner bore, wherein the HLA assembly is disposed in the inner bore, and the cartridge is sized and shaped for insertion into the cartridge cavity formed in an underside of the valve train carrier. The cartridge is configured to have a valve train lash set prior to insertion into the cartridge cavity. A rocker arm assembly includes a body configured to engage the hydraulic lash adjustment (HLA) assembly, an end having a socket formed therein, and an e-foot extending through the socket and coupled to the end, the e-foot configured to maintain substantially flat contact with a top surface of an engine valve.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: March 17, 2020
    Assignee: Eaton Corporation
    Inventors: Eric John Yankovic, Majo Cecur, Debra Lynn McFadden, Andrei Dan Radulescu, Anthony Leon Spoor, Douglas Wright
  • Patent number: 10472998
    Abstract: A rocker arm includes an outer arm with an outer follower and an inner arm which selectively pivots relative to the outer arm, the inner arm having an inner follower. A lost motion spring biases the inner arm to pivot relative to the outer arm. A lock pin which slides between a coupled position and a decoupled position. A pivot shaft includes a first portion a second portion centered about a first pivot shaft axis and a third portion located between the first portion and the second portion that is centered about a second pivot shaft axis which is parallel to, and laterally offset from, the first pivot shaft axis. The third portion supports the inner arm.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: November 12, 2019
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Dominic Borraccia, Ian R. Jermy
  • Patent number: 10371020
    Abstract: An internal combustion engine may include at least one cylinder, a first outlet valve and a second outlet valve for directing exhaust gas out from a combustion chamber of the at least one cylinder. The first outlet valve may include a first valve opening and a first valve body where the first valve opening is adjustable between a closed position and an open position. The second outlet valve may include a second valve opening and a second valve body where the second valve body is adjustable between a closed position and an open position. An adjusting lever may adjust one or both of the first valve body and the second valve body between the open position and the closed position.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: August 6, 2019
    Assignee: Mahle International GmbH
    Inventors: Patrick Altherr, Hermann Hoffmann
  • Patent number: 10337359
    Abstract: A retainer comprises an inner tubular portion fitted to a mounting body. The inner tubular portion comprises an inner circular edge having a radius R3. An annular retaining surface is connected to the tubular portion. The annular retaining surface comprises an area bounded by an outer edge and the inner circular edge. The outer edge being bounded by an arc AD comprising a first radius R1, a sector CB comprising a second radius R2, where R1>R2, a first chord DC connecting the arc AD to the sector CB, and a second chord BA connecting the arc AD to the sector CB. A rocker arm assembly comprises a rocker arm body configured to actuate a valve in a valve train. The retaining surface abuts a spring coil to retain the coil against the rocker arm body, but the retaining surface does not abut a first arm of the spring.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: July 2, 2019
    Assignee: Eaton Intelligent Power Limited
    Inventors: Steven E McCutcheon, Eric J. Yankovic
  • Patent number: 10329970
    Abstract: A modified rocker assembly having an offset end is designed for engine heads having an obstruction preventing use of a symmetric switching rocker arm. The modified rocker assembly has an obstructed side and a non-obstructed side and has an outer structure with a first end, and an inner rocker structure fitting within the outer structure, the inner structure also having a first end. The modified rocker assembly has an axle pivotally connecting the first ends of inner structure to the outer structure, such that the inner structure pivots within the outer structure around the axle. At least one torsion spring on one side of the axle rotationally biases the inner structure relative to the outer structure. The outer structure is offset on the obstructed side as it extends from the second end toward the first end, creating the first offset portion to provide additional clearance on the obstructed side.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: June 25, 2019
    Assignee: EATON CORPORATION
    Inventor: James E. McCarthy, Jr.
  • Patent number: 10316702
    Abstract: An assembly for a valvetrain having a valve, a lash adjuster, and a lobe. The assembly includes a shaft, a bearing supported by the shaft for engaging the lobe, and a rocker having a pad for the valve and a socket for the lash adjuster. Walls are disposed between the pad and socket, have inner and outer wall surfaces, and define a valley for the shaft. Upwardly-opening arc-shaped bearing surfaces are disposed longitudinally between the pad and socket spaced laterally from each other and support the shaft when the bearing engages the lobe. A retention element formed in each wall with a depressed portion spaced from the outer wall surface and a lip portion arranged under the depressed portion extends into the valley above the bearing surfaces such that the shaft is prevented from moving out of the valley in absence of engagement between the bearing and the lobe.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: June 11, 2019
    Assignee: GT Technologies
    Inventors: John Edmund Brune, Scott P. Smith
  • Patent number: 10316709
    Abstract: An internal combustion engine includes a cylinder head, a poppet valve having a seat within the cylinder head, a cam shaft on which is mounted an eccentrically shaped cam, and a rocker arm assembly comprising a rocker arm, a cam follower, and an electromagnetically actuated lash adjuster. The lash adjuster provides a continuously variable length fulcrum for the rocker arm. The actuator may be a piezoelectric stepper motor. The lash adjuster may be operative to vary a rate of internal exhaust gas recirculation and without requiring crank angle data.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: June 11, 2019
    Assignee: Eaton Intelligent Power Limited
    Inventors: Austin Robert Zurface, David Gerard Genise, Hongbin N. Wang, Sachin Wadikhaye
  • Patent number: 10309263
    Abstract: Providing a rocker arm which can ensure the durability while reducing the inertial mass. The rocker arm (10) includes a valve abutment part (15) pressing a valve (80). The valve abutment part (15) includes a receiving wall (14) abutting against an end surface of a stem end (81A) of the valve (80) in a pressing state and a pair of sidewalls (13) protruding from both side ends (14A) of the receiving wall (14) so as to be opposed to each other and disposed along and in proximity to a side peripheral surface of the stem end (81A) of the valve (80). At least protruding distal ends of the sidewalls (13) each have a smaller thickness than adjacent portions and serve as a thinner portion (23).
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: June 4, 2019
    Assignee: OTICS CORPORATION
    Inventors: Naoyuki Yamane, Yoshiaki Haga, Tatsuya Sasaki, Eiichi Nozaki, Makoto Takaragi
  • Patent number: 10302024
    Abstract: An oil control valve system according to one example of the present disclosure incorporates a common or interchangeable oil control valve at distinct locations of an engine to direct operation of switching mechanisms over sets of three cylinders. In another aspect of the present disclosure, four interchangeable oil control valves are used in a six-cylinder engine. Utilizing interchangeable oil control valves minimizes design costs, reduces assembly time, lessens repair or replacement burdens, and allows for enhanced engine performance.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: May 28, 2019
    Inventor: Austin Robert Zurface
  • Patent number: 10287930
    Abstract: This invention provides a novel lightweight rocker arm frame and a forming process of a curved crown part thereof, including two sidewalls and two bottom plates. The two sidewalls are connected through the bottom plates respectively located at two ends. A ball socket protruded upwards and an oil hole are arranged at a bottom plate at one end, and a bottom surface of a bottom plate at the other end is a bearing surface. A pin shaft hole is formed in the middle of each sidewall without the bottom plates. According to the rocker arm frame disclosed by the invention, the strength of the structure can be ensured while light weight is realized. The production efficiency of the rocker arm frame is effectively improved, and the structure of the valve rod supporting position is improved.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: May 14, 2019
    Assignee: Hangzhou XZB Tech Co., Ltd.
    Inventors: Na Xu, Haijun Ren
  • Patent number: 10280817
    Abstract: In a variable valve mechanism, during switching from a disconnected state to a connected state, the switch arm being displaced in a return direction comes in sliding contact with a pin end surface of the switch pin, and presses the pin end surface toward the disconnected position to push back the switch pin. At a sliding contact start time, the switch arm sliding contacts a portion of the pin end surface on a return direction side with respect to an idle-swing-side edge. At least during a period from a 10% position time to a sliding contact end time, a position of a pressed center relative to the pin end surface shifts toward the return direction side without stopping as the switch arm is displaced toward the return direction relative to a main arm, so that the sliding contact ends without stopping of the pressed center at a return-side edge.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: May 7, 2019
    Assignee: OTICS CORPORATION
    Inventors: Takayuki Maezako, Akira Sugiura
  • Patent number: 10267189
    Abstract: A variable valve actuation device includes a plurality of valve lifter. Each valve lifter slidable in a lifter support hole between an upper position and a lower position. A valve rest recess communicating with a valve rest chamber opens out at an outer circumferential surface of the valve lifter, and a valve rest supply port of a valve rest passage opens out at an inner circumferential surface of the lifter support hole in such a positional relationship that the valve rest passage and the valve rest chamber communicate with each other when the valve lifter is at the upper position, and continue to communicate with each other until the valve lifter has moved downward to a shut-off position located at a prescribed part of a down stroke from the upper position. The communication between the valve rest passage and the valve rest chamber shut off at the shut-off position.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: April 23, 2019
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kaori Takehana, Yukio Konishi, Chikara Tanaka
  • Patent number: 10260382
    Abstract: A valve bridge assembly includes a valve bridge; a first cavity formed towards a first end portion of the valve bridge; and a hydraulic lash adjuster (HLA) disposed within the first cavity for engaging a first valve stem. The HLA includes a first contact surface for engaging the first valve stem. The first contact surface is curved.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: April 16, 2019
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventor: Majo Cecur
  • Patent number: 10240490
    Abstract: A rocker arm comprising a supply path that communicates with a first lash bore and a first spool bore. A spool is in the spool bore. A hydraulic lash device is in the first lash bore, wherein an outer body is configured to collapse during a first valve lift profile when receiving a low pressure fluid, and wherein the outer body and the inner body are configured to cooperate rigidly when receiving a high pressure fluid during a second valve lift profile. The spool is movable to a first spool position to align the spool notch with a first spool path and a second spool path, and the spool is movable to a second spool position to align the spool notch with the second spool path and an accumulator path. The supply path in to the rocker arm is the only source of fluid to the spool.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: March 26, 2019
    Assignee: Eaton Intelligent Power Limited
    Inventor: Douglas J Nielsen
  • Patent number: 10196943
    Abstract: A valve train assembly includes a rocker arm, comprising: a first roller, configured to engage a first rotatable cam surface; and a further roller, configured to engage a further rotatable cam surface, wherein at least part of the rocker arm can be pivoted by at least the first rotatable cam surface to move a valve to cause a first valve event, and wherein at least part of the rocker arm can be pivoted by the further rotatable cam surface to move the valve to cause a second valve event.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: February 5, 2019
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventor: Majo Cecur
  • Patent number: 10190446
    Abstract: A valve train assembly includes a valve bridge assembly. The valve bridge assembly includes: a valve bridge; a first cavity formed towards a first end portion of the valve bridge; and a hydraulic lash adjuster (HLA) disposed within the first cavity, the HLA for engaging a first valve stem. The valve train assembly further includes: a pivotally mounted first rocker arm for engaging the valve bridge and to pivot in response to a rotating first cam to cause a first valve lift event in an engine cycle. The first rocker arm includes: a rocker arm cavity formed within an end portion thereof; and a control capsule disposed within the rocker arm cavity, wherein the control capsule is configurable in an ON configuration and an OFF configuration.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: January 29, 2019
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventor: Majo Cecur
  • Patent number: 10145271
    Abstract: A monolithic rocker arm component includes a first lateral wall defining a first aperture and a first mass reducing feature, an opposing second wall defining a second aperture and a second mass reducing feature, a pushrod receiving member that bridges the first lateral wall and the second lateral wall at a first end of the rocker arm, and a tongue element that bridges the first lateral wall and the second lateral wall at a second end of the rocker arm. The pushrod receiving member routes oil from the first towards the second end. The monolithic rocker arm may have one or more internal regions having lattice structures. Methods for additive manufacturing the monolithic rocker component are also provided.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: December 4, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Tyson W. Brown, Anil K. Sachdev, Michael B. Fleck, Ronald B. Beals, Kevin M. Luchansky
  • Patent number: 10139264
    Abstract: An elastically deformable load bearing structure includes a measuring arrangement for measuring a magnitude of a load acting on the load bearing structure in a loadable section. A mechanical transmission element extends from the loadable section to a measuring section of the load bearing structure and cooperates operatively with a sensor. The sensor is arranged in the measurement section. The mechanical transmission element is constructed as a pivotable rocker supported by a rocker bearing positioned inside a length of the transmission element.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: November 27, 2018
    Assignee: DIGI SENS AG
    Inventor: Martin Lustenberger
  • Patent number: 10132207
    Abstract: The variable valve actuating device (20) comprises a valve lifter (24) interposed between a swing end of a rocker arm 22 and a stem end of an engine valve (17), and a switch pin (53) slidably received in the valve lifter (24) so as to selectively abut the end surface of the valve stem as the valve lifter is actuated by a cam (21a). The swing end of the rocker arm abuts an upper end of a projection (55) projecting from the upper end of the valve lifter via an engagement feature (26b, 55a) that prevents a rotational movement of the valve lifter relative to the swing end around the axial line of the valve stem.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: November 20, 2018
    Assignees: HONDA MOTOR CO., LTD., TANAKA SEIMITSU KOGYO CO., LTD.
    Inventors: Kaori Takehana, Masaru Izawa
  • Patent number: 10132205
    Abstract: An adjusting device for adjusting valve clearance of a charge-cycle valve of an internal combustion machine is provided. The adjusting device includes a pivoted rocker lever, at one end of which an actuation element is positioned configured to transfer a force to the charge-cycle valve. A transmission element is attached to the actuation element at an opposite end to the charge-cycle valve of which a sleeve area is positioned, which is used to support the transmission element regarding the actuation element. A method for adjusting valve clearance of a charge-cycle valve of an internal combustion machine using an adjusting device is also provided.
    Type: Grant
    Filed: December 6, 2014
    Date of Patent: November 20, 2018
    Assignee: Daimler AG
    Inventor: Matthias Lahr
  • Patent number: 10119606
    Abstract: A clip for a switchable roller finger follower that includes a retainer for a hydraulic lash adjuster, and an anti-rotation feature that prevents rotation of a coupling pin is provided. The clip includes a first leg arranged adjacent to a dome-shaped recess on a bottom surface of an outer lever of the switchable roller finger follower that includes a retainer for the hydraulic lash adjuster, and a second leg of the clip includes an anti-rotation bar that extends laterally across a part of the coupling pin and prevents rotation of the coupling pin. A switchable finger follower with the clip is also provided.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: November 6, 2018
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Faheem Ahmed, Colin Foster, Michael Kugler, Philipp Streit
  • Patent number: 10094249
    Abstract: A switchable rocker arm is provided having first and second arms. The first arm has a first outer end and a first inner end and the second arm has a second outer end a second inner end, with the first and second outer ends contacting a respective one of a cam or a valve. One of the first and second inner ends includes an opening with a ring gear and the other includes at least one support for a planet gear that engages the ring gear. A sun gear is located on a rocker shaft and engages the planet gear. A locking mechanism is switchable from a locked position, in which the sun gear is rotationally fixed to the rocker shaft to transfer a cam lift to the valve via the gear ratio provided in the sun, planet, and ring gear arrangement, and a release position, in which the sun gear is rotatable on the rocker shaft so no cam lift is transferred.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: October 9, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Sumukha Nagaraj
  • Patent number: 10077687
    Abstract: An assembly for coupling a valve stem to an actuating member of an actuator in a desmodromic valve actuation mechanism comprises a spherical bearing having two portions each of which defines a respective bearing surface which is complementary to the bearing surface defined by the other portion, at least one of the surfaces being part spherical, one of the portions being arranged to be coupled to the actuating member and the other portion being arranged to be coupled to the valve stem; and a resilient arrangement which exerts a biasing force on one of the bearing portions and provides resilience in the coupling provided by the assembly between the valve stem and actuating member.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: September 18, 2018
    Assignee: Camcon Auto Limited
    Inventors: Roger Derrick Stone, Owen James Warren Evans
  • Patent number: 10072534
    Abstract: A lash adjuster includes a body which is cylindrical in shape and a plunger. The plunger is reciprocably inserted into the body and has an interior in which a low-pressure chamber is defined. The plunger has a bottom wall defining a high-pressure chamber in conjunction with the body between them and a peripheral wall formed with a plunger oil hole through which an operating oil is fed into the low-pressure chamber. The bottom wall is formed with a valve hole through which the operating oil stored in the low-pressure chamber is allowed to flow into the high-pressure chamber. The plunger has a pocket provided on the peripheral wall so as to be deformed toward the low-pressure chamber and inclined in an upward direction, defining the plunger oil hole.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: September 11, 2018
    Assignee: OTICS CORPORATION
    Inventor: Hiroyuki Suzuki
  • Patent number: 10054014
    Abstract: A rocker arm includes an outer arm; an inner arm which selectively pivots relative to the outer arm; and a latching arrangement which switches the rocker arm between a coupled state and a decoupled state. The latching arrangement includes a connecting bore which is terminated by a connecting bore floor; an oil supply bore which opens into the connecting bore through the connecting bore floor; a lock pin bore which opens into the connecting bore through the connecting bore floor; a lock pin within the lock pin bore where the lock pin prevents the inner arm from pivoting in the coupled state and where the lock pin permits the inner arm to pivot in the coupled state; and a retainer within the connecting bore which defines a chamber within the connecting bore which provides fluid communication between the oil supply bore and the lock pin bore.
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: August 21, 2018
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Joseph M. West, Ian R. Jermy
  • Patent number: 10001034
    Abstract: A rocker arm assembly for a valvetrain having a valve, a lash adjuster, and a camshaft lobe. The rocker arm assembly includes a shaft, a bearing rotatably supported by the shaft for engaging the lobe, and a rocker arm. The rocker arm has a pad for engaging the valve, and a socket for engaging the lash adjuster. A pair of walls are disposed between the pad and socket and define a valley for accommodating the shaft. A pair of upwardly-opening arc-shaped bearing surfaces are disposed longitudinally between the pad and the socket and are spaced laterally from each other. The bearing surfaces rotatably support the shaft when the bearing engages the lobe. A pair of retention elements extend from the walls into the valley above the bearing surfaces such that the shaft is prevented from moving out of the valley in absence of engagement between the bearing and the lobe.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: June 19, 2018
    Assignee: GT Technologies
    Inventors: John Edmund Brune, Scott P. Smith
  • Patent number: 9976493
    Abstract: A switchable rocker arm for valve deactivation is provided for a valve train of an internal combustion engine. The switchable rocker arm includes a valve side lever assembly, a cam side lever assembly, and a hydraulically actuated coupling assembly. The valve side lever assembly includes a first housing with a first rocker shaft bore. The cam side lever assembly includes a second housing with a first arm with a second rocker shaft bore and a second arm with a third rocker shaft bore. The first and second arms extend along opposed longitudinal sides of the cam side lever assembly such that the first, second and third rocker shaft bores are axially aligned. The coupling assembly is arranged at an end furthest away from a pivot axis for minimal loading and provides locking and unlocking of the switchable rocker arm to achieve full valve lift and no valve lift modes, respectively.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: May 22, 2018
    Assignee: Schaoffler Technologies AG & Co. KG
    Inventor: Jeffrey Shewell
  • Patent number: 9869211
    Abstract: A method of assembling a switching rocker arm assembly having an inner arm, an outer arm and a latch. The method includes indenting an outer arm surface on the outer arm, the outer arm surface defining an arcuate aperture. An inner arm surface can be indented on the inner arm at an inner arm latch shelf. A latch can be positioned relative to the inner and outer arms.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: January 16, 2018
    Assignee: EATON CORPORATION
    Inventors: James R. Sheren, Anthony L. Spoor, Luigi Lia, Philip Michael Kline
  • Patent number: 9828890
    Abstract: A valve opening and closing apparatus is disclosed having one or a plurality of rocker arms in contact with the cam, such that each of the rocker arms causes a valve to be opened and closed using the rotation of a cam. An eccentricity-creating unit is disposed on the rocker arm, and changes an eccentric position using rotation of a rotary shaft extending through the plurality of rocker arms. A driving unit is connected to the rotary shaft of the eccentricity-creating unit to rotate the rotary shaft.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: November 28, 2017
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Jae Hee Jeon, Min Hui Yu, You Sang Son, Seock Joong Yoon
  • Patent number: 9816409
    Abstract: A variable valve lift apparatus to vary lift of a valve disposed at an engine may include an outer body selectively making a lever motion according to rotation of a cam, being adapted such that the valve is connected with one end thereof and a pivot axis of the lever motion is disposed at another end thereof, and forming an inside space, an inner body disposed in the inside space of the outer body and adapted such that one end thereof is rotatably connected with the one end of the outer body, a connecting shaft disposed so as to penetrate the one end of the outer body and the one end of the inner body and connect the outer body with the inner body, and a lost motion spring provided so as to return the inner body which is relatively rotated with the outer body around the connecting shaft.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: November 14, 2017
    Assignee: Hyundai Motor Company
    Inventors: Myungsik Choi, Gee Wook Shin, Won Gyu Kim, Gyu Han Hwang, Young Hong Kwak, Yoonsik Woo
  • Patent number: 9803517
    Abstract: A valve-actuating lever for reciprocating-piston internal combustion engines is proposed, wherein this lever is supported on a cylinder head of the internal combustion engine or a part of this cylinder head, is in active connection with a cam of a camshaft, has an essentially inverted U-shaped cross section, is made from steel sheet metal by a punching, bending, and/or deep-drawing measure, and has, in addition to a support plate (5) for a shaft of a gas-exchange valve or for an intermediate piece, lateral guide cheeks (3, 4). A height of the lateral guide cheeks (3, 4) can be changed with regard to the support plate (5) by an embossing procedure.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: October 31, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Martin Lambert, Ralph Teichgraber
  • Patent number: 9790823
    Abstract: A switching rocker arm assembly can include an outer arm having a first outer side arm and a second outer side arm, each of the first and second outer side arms having a high lift lobe contacting surface, and an inner arm disposed between the first and second outer side arms and pivotably secured to the outer arm, the inner arm having a low lift lobe contacting surface and defining a latch bore. A latch assembly can be arranged at least partially within the latch bore of the inner arm. The latch assembly can include a latch pin having an orientation pin receiving recess, a sleeve engaging the latch pin and having an orientation pin opening, and an orientation pin extending through the orientation pin opening into the orientation pin receiving recess. The orientation pin can have a substantially cylindrical first wall and a substantially cylindrical second wall.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: October 17, 2017
    Assignee: Eaton Corporation
    Inventor: Austin Zurface
  • Patent number: 9726052
    Abstract: A method of precision manufacture of an outer arm of a rocker arm assembly is performed by determining structures of a rough outer arm that would require precision processing and locations to support the structures as they are processed. Starting with at least one structure requiring precision processing, locations on the outer arm close to the structure to hold the outer arm during processing are determined that would cause minimal distortion of the outer arm during processing. The outer arm is then provided with clamping lobes at these locations. The clamping lobes of the outer arm are clamping into a fixture for manufacturing. The slider pad may now be precision ground while the outer arm is clamped in the fixture with minimal risk of distortion of the outer arm.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: August 8, 2017
    Assignee: EATON CORPORATION
    Inventors: Austin Robert Zurface, Daniel Bennett Trudell, Andrei Dan Radulescu
  • Patent number: 9708942
    Abstract: A switching rocker arm having an outer arm having a first end, a second end, a first and second outer side arm having slider pads that ride on a second cam is disclosed. The switching rocker arm also has an inner arm disposed between the first and second outer side arms. The inner arm has a first end, a second end and a bearing disposed between the first and second end adapted to ride along a first cam. The inner arm is pivotably secured adjacent its first end to the outer arm adjacent its first end. At least one arm has an over-travel limiter structure limits pivoting motion of the first arm relative to the second arm. The switching rocker arm also exhibits decreased lash as the bearing wears, and increased lash as the latch and slider pads wear.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: July 18, 2017
    Assignee: EATON CORPORATION
    Inventors: Austin Robert Zurface, Daniel Bennett Trudell, Andrei Dan Radulescu
  • Patent number: 9664076
    Abstract: A switchable finger follower, including an inner lever and an outer lever. The outer lever is mounted for pivoting movement to the inner lever. A coupling device is located on one of the inner or outer levers and has a coupling pin arranged to move between a locking position, in which the inner and outer levers are connected together for movement in an activation direction, and an unlocked position, in which the inner lever is pivotable relative to the outer lever. A coupling projection is located on the other of the inner or outer lever. The coupling pin engages beneath a coupling surface of the projection in the locking position, and a stop surface of the projection contacts a second stop surface on the one of the inner lever or the outer lever. The second stop surface is located on a removable shim that is replaceable for lash adjustment.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: May 30, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Matthew Evans, Debora Manther
  • Patent number: 9611767
    Abstract: In an internal combustion engine comprising two or more engine valves that receive valve actuation motions from a valve actuation motion source via a valve train, which valve train comprises a hydraulic lash adjuster, an apparatus for valve actuation comprises a valve bridge and a lost motion assembly disposed therein. The lost motion assembly comprises a first piston disposed in a first piston bore formed in the valve bridge. The first piston is configured to operatively connect with a component of the valve train. A biasing element is configured to bias the first piston out of the first piston bore with a first force that is greater than a second force applied to the first piston by the hydraulic lash adjuster. A travel limiter is configured to limit travel of the first piston out of the first piston bore to be no greater than a maximum lost motion distance.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: April 4, 2017
    Assignee: Jacobs Vehicle Systems, Inc.
    Inventor: Justin Baltrucki
  • Patent number: 9587531
    Abstract: A variable valve lift apparatus may include: an outer body selectively making a lever motion according to rotation of a cam, a first inner body disposed in the any one inside space of the outer body and adapted, a second inner body disposed in the other one inside space of the outer body, a connecting shaft disposed to penetrate the one end of the outer body, the one end of the first inner body, and the one end of the second inner body and connect the outer body with the first and second inner bodies, a first lost motion spring to return the first inner body relatively rotated with the outer body around the connecting shaft, and a second lost motion spring to return the second inner body relatively rotated with the outer body around the connecting shaft.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: March 7, 2017
    Assignee: Hyundai Motor Company
    Inventors: Myungsik Choi, Won Gyu Kim, Young Hong Kwak
  • Patent number: 9574463
    Abstract: A switchable finger follower having at least two lift modes includes a primary lever and a secondary lever mounted for pivoting movement to the primary lever, the secondary lever includes a cam contact surface, and a lost motion contact projection. A coupling device on the primary lever includes a coupling pin that moves between a locking position, in which the secondary lever is locked to the primary lever in a lift position, and an unlocked position, in which the secondary lever is pivotable relative to the primary lever. A first lost motion idler arm is pivotally connected to the primary lever and has a distal end that contacts the lost motion contact projection. A first lost motion spring is located between the primary lever and the first lost motion idler arm that maintains a preload on the secondary lever via the first lost motion idler arm in the unlocked position.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: February 21, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Debora Manther, Allen Hale
  • Patent number: 9567881
    Abstract: A valvetrain for translating force and oil between a valve and intermediate member of an engine, including a rocker, a shaft, and a recess. The rocker has an inner surface, a pad for engaging the valve, a socket for engaging the intermediate member, a socket port defined in the surface, and a socket channel extending from the socket port to the socket. The shaft has a bearing surface for supporting the rocker, a channel spaced from the bearing surface, a feed port in the bearing surface, and a feed channel extending from the feed port to the channel. The rocker rotates between: closed, with the socket port and feed port aligned; and open, with the socket port spaced from the feed port. A recess is disposed in the bearing surface adjacent to the feed port and extends to a base aligned with the socket port when the rocker is open.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: February 14, 2017
    Assignee: GT TECHNOLOGIES
    Inventor: John Edmund Brune
  • Patent number: 9540969
    Abstract: The present invention provides a variable valve mechanism, which includes a rocker arm including an input member and an output member; a switching device that switches a drive state of the valve by displacing the switching pin between a coupling position at which the switching pin extends between the first pinhole in the input member and the second pin hole in the output member and a non-coupling position at which the switching pin does not extend; and a lost motion spring. A displacement clearance is formed between an inner peripheral surface of the first or second pin hole and an outer peripheral surface of the switching pin to permit the relative displacement in a range of the displacement clearance at a coupled time so that a tappet clearance is not formed with the input member urged toward the cam by the lost motion spring.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: January 10, 2017
    Assignee: OTICS CORPORATION
    Inventors: Koki Yamaguchi, Masatoshi Sugiura, Naoki Hiramatsu
  • Patent number: 9512746
    Abstract: An apparatus and system for actuating at least one engine valve includes a rocker arm having a collapsing mechanism and an extending mechanism. The rocker arm may be configured as an exhaust rocker arm or an intake rocker arm. The collapsing mechanism is disposed at a motion receiving end of the rocker arm and is configured to receive motion from a primary valve actuation motion source. The extending mechanism is disposed in the rocker arm and configured to convey auxiliary valve actuation motions to the at least one engine valve. In a first embodiment, the extending mechanism is disposed at a valve actuation end of the rocker arm, whereas in a second embodiment, the extending mechanism is disposed at the motion receiving end of the rocker arm. Supply of fluid to a first and a second fluid passage controls operation of the extending and collapsing mechanisms, respectively.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: December 6, 2016
    Assignee: Jacobs Vehicle Systems, Inc.
    Inventors: Justin Baltrucki, Gabriel Roberts, G. Michael Gron, Jr.
  • Patent number: 9500269
    Abstract: A cam follower for a rocker arm includes a cylindrical outer ring (11) having an outer circumference surface abutting on a cam, a support shaft (6) to support the outer ring (11), a plurality of rollers (12) arranged in an annular region between the support shaft (6) and the outer ring (11), and a side plate (16) composed of a ring-shaped disk penetrated by the support shaft (6), opposed to an end face (15) of the roller (12), and having an outer diameter Ds smaller than an inner diameter Dr of the outer ring (11). The side plate (16) is arranged at each end of the roller (12), and a relationship Lr<Lk+2t is satisfied in which Lk represents a shaft length of the roller (12), Lr represents a shaft length of the outer ring (11), and t represents a thickness of the side plate (16).
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: November 22, 2016
    Assignee: NTN CORPORATION
    Inventors: Akihiko Katayama, Katsufumi Abe, Hisataka Hasegawa, Masaru Kuroda
  • Patent number: 9488075
    Abstract: A rocker arm for engaging a cam in a valve actuation arrangement includes a latch pin assembly having includes a latch pin, retainer, and biasing mechanism. The latch pin has a pin body with a head and a tail at the second end; the body defining an open volume; the tail having an open mouth in communication with the open volume of the body; and the open volume having a non-circular cross-section. The retainer has a male engagement portion and an outer portion. The male engagement portion is within the open volume of the body through the open mouth. The male engagement portion has a non-circular cross section. The outer portion is non-removably secured to an outer arm of the rocker arm. The biasing mechanism is oriented in the open volume of the body and between and against the latch pin and the retainer.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: November 8, 2016
    Assignee: Eaton Corporation
    Inventor: Andrei Dan Radulescu
  • Patent number: 9488076
    Abstract: A method of remanufacturing a rocker arm having a body defining a socket portion is disclosed. The method includes machining the socket portion to remove a worn surface and form a seat configured to receive an insert member therein. The method further includes disposing the insert member within the seat and coupling the insert member to the seat.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: November 8, 2016
    Assignee: Caterpillar Inc.
    Inventors: Taylor Young, Jonathan R. Eggemeyer, Donald G. Clark, Curtis J. Graham