Patents Examined by Zelalem Eshete
  • Patent number: 11428172
    Abstract: A valve opening and closing timing control device includes: a driving-side rotating body that rotates synchronously with a crankshaft of an internal combustion engine around a rotating shaft core; a driven-side rotating body that rotates integrally with a valve opening and closing camshaft of the internal combustion engine around the same shaft core as the rotating shaft core; a gear mechanism that sets a relative rotation phase between the driving-side rotating body and the driven-side rotating body by displacement of a meshing position; a motor that enables displacement of the meshing position of the gear mechanism by rotating a rotating shaft; and a control unit that controls the drive of the motor. The control unit intermittently performs control to energize the motor for one phase for a predetermined time after the internal combustion engine is stopped.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: August 30, 2022
    Assignee: AISIN CORPORATION
    Inventors: Yuki Kasuya, Shugo Ito, Takano Nakai, Kenichiro Suzuki, Yoshiyuki Kamoyama, Toru Hirota
  • Patent number: 11428126
    Abstract: A drain port of a hydraulic oil controller is connected to an oil discharge portion. Each of partitions partitions between a corresponding one of drain oil passages and a corresponding one of a retard supply oil passage and an advance supply oil passage. Each of the drain oil passages connects between the oil discharge portion and a corresponding one of a retard chamber and an advance chamber. A recycle oil passage connects between: a portion of each drain oil passage located between the corresponding partition and the drain port; and the retard supply oil passage or the advance supply oil passage. A drain flow restrictor is formed in the portion of each drain oil passage located between the corresponding partition and the drain port. A passage cross-sectional area of the drain flow restrictor is smaller than a smallest passage cross-sectional area of the recycle oil passage and is constant.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: August 30, 2022
    Assignee: DENSO CORPORATION
    Inventor: Tetsuro Mitsutani
  • Patent number: 11408309
    Abstract: A valve opening and closing timing control device includes: a drive-side rotary body rotating synchronously with a crankshaft; a driven-side rotary body arranged coaxially with the drive-side rotary body and rotating integrally with a valve opening and closing camshaft; a fluid pressure chamber defined between the drive-side and driven-side rotary bodies; advance and retard chambers defined by partitioning the fluid pressure chamber; an intermediate lock mechanism selectively switches between a lock state and a lock release state; advance and retard flow paths allowing a flow of the working fluid to be supplied to and discharged from the advance and retard chambers; a control valve including a spool; and a phase control unit moving a position of the spool by controlling a power supply amount to the control valve to supply and discharge the working fluid to and from the advance and retard chambers to displace a relative rotation phase.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: August 9, 2022
    Assignee: AISIN CORPORATION
    Inventors: Kazuo Ueda, Yuji Noguchi, Masaki Kobayashi
  • Patent number: 11401838
    Abstract: A system for controlling actuation of an engine valve comprises a pivot and a torsion spring having first and second legs operatively connected to the pivot. A lever arm is adjustably affixed to and extending away from the pivot, and is further rotatable about a pivot axis of the pivot between a retracted position and an extended position and vice versa relative to a motion conveying component. Furthermore, a housing is provided having a pivot bore formed therein with the pivot rotatably disposed in the pivot bore. The housing further comprises a first and second openings intersecting with the pivot bore such that the first and second legs extend out of the first opening and the lever arm extends out of the second opening. When a first force is applied by the motion conveying component to the lever arm, such first force maintains the lever arm in the extended position.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: August 2, 2022
    Assignee: Jacobs Vehicle Systems, Inc.
    Inventors: G. Michael Gron, Jr., Jacob Moore, Justin D. Baltrucki, Eric J. Hodgkinson, Timothy P. Neal, Bruce A. Swanbon, Robb Janak, Matei Alexandru
  • Patent number: 11401842
    Abstract: A camshaft phase adjuster, which includes first and second oil holes and a locking pin hole formed in the rotor inner core, the first oil hole connecting an engine fluid passage and the first chamber, the second oil hole connecting the first and second chambers, and the first and second oil holes both passing through the locking pin hole. The locking pin is switchable between first and second positions. A one-way valve is provided at the second oil hole; when the locking pin is in the first position, the first oil hole is unblocked, the one-way valve is switched off and the second oil hole is blocked; and in the second position, the first oil hole is blocked, the one-way valve is switched on, and the second oil hole is unblocked. This allows an intermediate locking function.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: August 2, 2022
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Xin Li
  • Patent number: 11396832
    Abstract: A valve timing adjusting device includes an intake variable valve mechanism and an exhaust variable valve mechanism. The exhaust variable valve mechanism includes an exhaust electric driving portion and an exhaust phase shifting portion including an input shaft. The exhaust phase shifting portion is disposed in a rotation transmission path between an exhaust camshaft and a crankshaft and configured to shift a rotation phase of the exhaust camshaft. The input shaft rotates in a rotational direction opposite to a rotational direction of the crankshaft when advancing the rotation phase. A phase of the exhaust phase shifting portion is configured to be shifted to a most advanced angle phase when the exhaust electric driving portion is de-energized or fails and when the exhaust phase shifting portion receives a torque in a forward rotational direction.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: July 26, 2022
    Assignee: DENSO CORPORATION
    Inventors: Kazuaki Nemoto, Akio Imai
  • Patent number: 11391187
    Abstract: In a first state: a spool valve of a control valve is disposed such that a second spool oil passage is closer to a second side in a longitudinal direction than a first spool oil passage; and as the spool valve has traveled toward the second side against a biasing force of a biasing member, a first port communicates with a second port via the first spool oil passage, a first sleeve oil passage, and the second spool oil passage. In a second state: the spool valve is disposed such that the first spool oil passage is closer to the second side than the second spool oil passage; and as the spool valve has traveled toward a first side in the longitudinal direction, the first port communicates with the second port via the first spool oil passage, the first sleeve oil passage, and the second spool oil passage.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: July 19, 2022
    Assignee: HITACHI ASTEMO, LTD.
    Inventor: Yasuhide Takada
  • Patent number: 11377981
    Abstract: A self-resetting single-valve hydraulic drive device and method based on primary and secondary pistons for a push rod engine is provided. A primary driving piston and a secondary driving piston are respectively provided on a rocker arm body and a valve bridge body. The secondary driving piston is connected to an exhaust valve. A driving oil passage connects the primary driving piston, the secondary driving piston and a drive control valve. When the drive control valve opens the driving oil passage, the primary driving piston and the secondary driving piston realize a hydraulic linkage. During a drive lift, the rocker arm body and the valve bridge body do not move, and the secondary driving piston opens the exhaust valve. In the beginning of a positive-power lift, a primary piston body oil passage and a secondary piston oil passage are closed, and the secondary driving piston is automatically reset.
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: July 5, 2022
    Assignee: JIANGSU JOINTEK PRECISION MACHINERY CO., LTD
    Inventor: Lap Lam Chui
  • Patent number: 11377984
    Abstract: The present invention relates to a coupling device for a valve-actuating device for actuating at least one valve of a reciprocating machine having variable valve lift, in particular for a valve-actuating device of a reciprocating internal combustion engine, to a valve-actuating device and to a reciprocating machine, the coupling device comprising a first coupling element, a second coupling element and a blocking means. The first coupling element and the second coupling element can be displaced relative to one another at least within defined boundaries along a first axis, it being possible for the blocking means to block the relative displacement of the two coupling elements with respect to one another along the first axis at least in a first direction.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: July 5, 2022
    Assignee: AVL List GmbH
    Inventors: Martin Klampfer, Andreas Zurk, Thomas Salmutter, J├╝rgen Gelter
  • Patent number: 11371396
    Abstract: The present invention relates to a switchable actuation device (100) for a gas exchange valve. The switchable actuation device (100) comprises a two-piece rocker arm (10). Said rocker arm comprises a first rocker arm portion (1a), which is mounted pivotably about a rocker arm shaft (2) and to which a bearing sleeve (1a1) is fastened concentrically with the rocker arm shaft (2), and a second rocker arm portion (1b) mounted pivotably on the bearing sleeve (1a1). Furthermore, both the first and the second rocker arm portions (1a, 1b) each comprise a cut-out (3a, 3b), wherein a locking element (4a) of a coupling device (4) of the switchable actuation device (100) can optionally be brought into and out of engagement with the two cut-outs (3a, 3b). An actuation of the poppet valve, preferably a change between a closed position and an open position of the poppet valve, is interrupted if the locking element (4a) is not in engagement with the two cut-outs (3a, 3b).
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: June 28, 2022
    Assignee: MAN TRUCK & BUS SE
    Inventors: Johannes Hollweck, Thorsten Bachmann
  • Patent number: 11365654
    Abstract: A bushing member includes: a large diameter portion which is inserted on a radially inner side of a coiled segment of an assist spring and includes a straight portion which extends in an axial direction; and a small diameter portion which is located on a radially inner side of a housing and has an outer diameter that is smaller than an outer diameter of the large diameter portion. The coiled segment includes a contact portion that contacts the straight portion at a radially inner surface of the contact portion. In an axial direction, a location of an end of the straight portion, which is located on one axial side where a driven shaft is placed, coincides with a location of an end of the contact portion located on the one axial side, or is on the one axial side of the location of the end of the contact portion.
    Type: Grant
    Filed: August 17, 2021
    Date of Patent: June 21, 2022
    Assignee: DENSO CORPORATION
    Inventor: Yuki Matsunaga
  • Patent number: 11346257
    Abstract: An actuation arrangement for actuating a plurality of latching arrangements of a respective plurality of dual body rocker arms of a valve train assembly of an internal combustion engine includes: a first shaft comprising one or more first selector cam for controlling the latching arrangements of a first group of one or more of the dual body rocker arms; and a second shaft comprising one or more second selector cams for controlling the latching arrangements of a second group of one or more of the dual body rocker arms. At least a portion of the first shaft is received in the second shaft, and the first shaft and the second shaft are controllable to rotate independently of one another, thereby to allow control of the latching arrangements of the dual body rocker arms on a per group basis.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: May 31, 2022
    Assignee: Eaton Intelligent Power Limited
    Inventor: Nicola Andrisani
  • Patent number: 11339688
    Abstract: A valve assembly that can be employed in a variable camshaft timing (VCT) phaser assembly. The valve assembly includes a metal sleeve and a check valve. The check valve, in an implementation, has an integral construction with the metal sleeve. The integral construction has multiple designs, one of which includes an overmolded construction of the check valve with the metal sleeve. The valve assembly can also include a valve housing which, in the implementation of the VCT phaser assembly, is a center bolt.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: May 24, 2022
    Assignee: BORGWARNER, INC.
    Inventors: Andrew V. Degner, Brian T. Kenyon, Chad M. McCloy
  • Patent number: 11326482
    Abstract: Methods and systems are provided for a valve system for actuating two cylinder valves in an engine. In one example, the valve system may include a single pump and a solenoid valve capable of non-concurrently actuating the two cylinder valves coupled to separate cylinders.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: May 10, 2022
    Assignee: Ford Global Technologies, LLC
    Inventor: Michael Shelby
  • Patent number: 11319843
    Abstract: A control screw for a camshaft phase shifter of an internal combustion engine extends along a longitudinal axis. The control screw includes a screw body. The control screw also includes a tubular spool assembly having a control valve assembly with at least three rigid rings and at least two valves. Each valve includes at least one vane connected to two flexible arms. The valve is connected to two consecutive rigid rings.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: May 3, 2022
    Assignee: Delphi Automotive Systems Luxembourg SA
    Inventors: Eric Bourniche, Marc Cipriano, Lucas Giambrone
  • Patent number: 11313254
    Abstract: The present invention provides for Variable Valve Actuation comprising a cam, a valve suitable to displace between a closed position and an open condition caused by said cam, and further comprising a main rocker arm suitable to swing over a fulcrum, mechanically interacting with said valve, by means of a guide profile, and wherein said cam interacts with said main rocker arm causing said valve displacement as a consequence of said main rocker arm swinging. The target is to prevent a valve brake due to the guide profile and enable higher system stiffness. Accumulator less designs are feasible with this system.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: April 26, 2022
    Assignee: FPT MOTORENFORSCHUNG AG
    Inventor: Harald Fessler
  • Patent number: 11313255
    Abstract: A marine outboard motor having an internal combustion engine is provided. The internal combustion engine includes an engine block having at least one cylinder and a valve train comprising a cam, a valve assembly including a valve spring, a roller finger follower, and a pivot post. The pivot post extends from a fixed body of the engine block and defines a contact surface about which the roller finger follower pivots when deflected by the cam during use. The pivot post is moveable relative to the fixed body in a first longitudinal direction (A) against the action of the valve spring. A removable shim is disposed between the fixed body and a portion (182) of the pivot post to space the pivot post from the fixed body in the first longitudinal direction (A) and thereby reduce an amount of lash between the cam and the roller finger follower. The removable shim is dimensioned to fit at least partly around a shaft portion of the pivot post.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: April 26, 2022
    Assignee: COX POWERTRAIN LIMITED
    Inventor: Adam Laycock
  • Patent number: 11313259
    Abstract: In an internal combustion engine, a linkage is provided between an auxiliary motion source and a main motion load path, such that motions received by the linkage from the auxiliary motion source result in provision of a first force to at least one engine valve and a second force to the main motion load path in a direction toward a main motion source. Where an automatic lash adjuster is associated with the main motion load path, the second force may be selected to aid in the control of lash adjustments made by the automatic lash adjuster. In various embodiments, the linkage may be embodied in an mechanical linkage, whereas in other embodiments, an hydraulic linkage may be employed. The linkage may be incorporated into, or otherwise cooperate, a valve bridge or a rocker arm.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: April 26, 2022
    Assignee: Jacobs Vehicle Systems, Inc.
    Inventors: Peter Jo, Justin Baltrucki, David Ferreira, Neenad Wamane
  • Patent number: 11313258
    Abstract: A continuous variable valve duration apparatus includes a cam unit, a cam formed on the cam unit, a camshaft inserted into the cam, a guide bracket, a guide shaft mounted on the guide bracket and disposed perpendicular to the camshaft, wherein a guide screw thread is formed on the guide shaft, a wheel housing disposed within the guide bracket, an inner wheel rotatably inserted into the wheel housing and movable perpendicular to the camshaft, a worm wheel disposed within the wheel housing, wherein an inner screw thread configured to engage with the guide screw thread is formed inside the worm wheel and an outer screw thread is formed on the worm wheel, a control shaft, a control worm formed on the control shaft, and a wheel elastic portion mounted to the wheel housing.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: April 26, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: You Sang Son, In Sang Ryu, Kyoung-Pyo Ha, Dongheon Park, Back Sik Kim, Seung Jae Lee
  • Patent number: 11306626
    Abstract: A camshaft phaser, including: a stator arranged to receive rotational torque, including a plurality of radially inwardly extending protrusions, and supported for rotation around an axis of rotation; a rotor including a plurality of radially outwardly extending protrusions circumferentially interleaved with the plurality of radially inwardly extending protrusions, and arranged to non-rotatably connect to a camshaft; a plurality of phaser chambers, each phaser chamber circumferentially bounded by a radially inwardly extending protrusion included in the plurality of radially inwardly extending protrusions and a radially outwardly extending protrusion included in the plurality of radially outwardly extending protrusions; an annular washer; and a target wheel including a first portion axially located between the annular washer and the rotor and in contact with the annular washer, arranged to detect a rotational position of the rotor for use in rotating the rotor with respect to the stator.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: April 19, 2022
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Alexandre Camilo