Camshaft Or Cam Characteristics Patents (Class 123/90.17)
  • Patent number: 11118486
    Abstract: A rotor is provided for a camshaft phaser. The rotor includes a plurality of vanes, a locking pin aperture, a vent passage connected to an end of the locking pin aperture, and an axial face configured to connect with a camshaft. The axial face defines a timing protrusion that is aligned with the vent passage or the locking pin aperture, and configured to be received by the camshaft.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: September 14, 2021
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Shannon Bell
  • Patent number: 11111826
    Abstract: A hydraulic valve for a cam phaser, the hydraulic valve comprising: a bushing including a piston that is movable in a bore along a longitudinal direction; a supply connection for feeding a hydraulic fluid; a first operating connection and a second operation connection; and a first tank drain connection and a second tank drain connection configured to drain the hydraulic fluid, wherein a first check valve is associated with the first operating connection and a second check valve is associated with the second operating connection, and the first operating connection and the second operating connection are connectable through at least one of the first check valve and the second check valve alternatively with each other or with the supply connection or with the first tank drain connection or with the second tank drain connection by moving the piston, wherein the hydraulic valve includes five switching positions,
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: September 7, 2021
    Assignee: ECO Holding 1 GmbH
    Inventors: Udo Bartel, Falk Mueller, Andre Seidenschwann, Patrick Ruppert
  • Patent number: 11105229
    Abstract: A hydraulic camshaft adjuster has a stator, a rotor arranged movably with respect to the stator, and a central valve via which oil supply of working chambers of the hydraulic camshaft adjuster is controlled. A deformable sealing sleeve is arranged between the central valve and the rotor. The sealing sleeve has an initial length in an axial direction, and after assembly, has a deformation such that the length of the sealing sleeve changes from the initial length to an assembled length. The sealing sleeve bears at least partially in the radial direction against the central valve and against the rotor.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: August 31, 2021
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Juergen Weber, Jochen Thielen
  • Patent number: 11098618
    Abstract: A press-fit member having a cylindrical shape is press-fit into a through hole formed in a vane. An advance-side lock pin and a retard-side lock pin are provided coaxially with each other inside the press-fit member. In the outer circumferential surface of the press-fit member, an advance-side lock pin-release oil passage for applying lock pin-release hydraulic pressure to an advance-side engagement groove and a retard-side lock pin-release oil passage for applying the lock pin-release hydraulic pressure, applied to the advance-side engagement groove, to a retard-side engagement groove are formed.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: August 24, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takuya Chikayama, Masayuki Yokoyama
  • Patent number: 11092046
    Abstract: A first rotator (6) includes an internal gear (14) and rotates in conjunction with a crankshaft (4). A second rotator (12) includes an output gear (121) and rotates in conjunction with a camshaft (3). A planetary rotator (13) includes a planetary gear (131) that meshes with the internal gear (14) and the output gear (121), and the planetary gear (131) meshes with the internal gear (14) and the output gear (121) to perform planetary motion, thereby changing the relative rotational position between the first rotator (6) and the second rotator (12). An input shaft (16) causes the planetary rotator (13) to perform planetary motion. A first bearing (18) is interposed between the input shaft (16) and the first rotator (6). A planetary bearing (17) is interposed between the input shaft (16) and the planetary rotator (13), and is included on the same plane orthogonal to the rotation axis (O) as the first bearing (18).
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: August 17, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Atsuyoshi Nakayama, Masayuki Yokoyama
  • Patent number: 11085337
    Abstract: A valve timing adjustment device includes: a first rotatable body that is rotated about a rotational axis synchronously with one of a drive shaft and a driven shaft of an engine; and a second rotatable body that is rotated about the rotational axis synchronously with the other one of the drive shaft and the driven shaft. The first rotatable body includes: a fastening portion, a slide portion and a bearing portion. The fastening portion is fastened to the one of the drive shaft and the driven shaft. The bearing portion includes an outer peripheral surface that is opposed to an inner peripheral surface of the second rotatable body, and the bearing portion rotatably supports the second rotatable body. The fastening portion projects on one axial side of the slide portion and the bearing portion in an axial direction toward the one of the drive shaft and the driven shaft.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: August 10, 2021
    Assignee: DENSO CORPORATION
    Inventors: Soichi Kinouchi, Kenji Tada, Makoto Otsubo
  • Patent number: 11078813
    Abstract: A valve timing adjustment device includes a sprocket, a vane rotor and a shim. The sprocket is configured to rotate. The vane rotor is received in the sprocket such that the vane rotor is rotatable relative to the sprocket. The vane rotor includes a supply oil passage that is configured to communicate with an external oil passage, and a rotational phase of the sprocket is changed when the vane rotor is rotated relative to the sprocket. The filter is configured to filter hydraulic oil, which is conducted in a connection oil passage that is configured to connect between the external oil passage and the supply oil passage. The shim is placed between the driven shaft and the filter.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: August 3, 2021
    Assignee: DENSO CORPORATION
    Inventor: Yuki Matsunaga
  • Patent number: 11073052
    Abstract: A valvetrain for an internal combustion engine has a camshaft rotatable about an axis of rotation, a sliding-block element connected in a rotationally fixed manner to the camshaft and displaceable in the axial direction of the camshaft relative thereto, which sliding-block element has an outer circumferential jacket surface with a shift gate via which a rotational movement of the sliding-block element can be converted into a displacement of the sliding-block element in the axial direction of the camshaft relative thereto, and a shift rod at least partially accommodated in the camshaft and displaceable by the sliding-block element in the axial direction of the camshaft relative thereto and via which shift rod an actuation of a gas exchange valve can be influenced.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: July 27, 2021
    Assignee: Daimler AG
    Inventor: Martin Mehring
  • Patent number: 11066966
    Abstract: A device for adjusting camshaft phase is proviced that includes a stator, a rotor and two guard caps that limit the rotor are fixedly provided at axial ends of the stator. The device further includes a belt pulley that is sleeved on the periphery of the stator and the guard caps and fixedly connected to the stator or the guard caps. An annular seal is disposed on the device and includes a first sealing portion and a second sealing portion located at axial ends. The seal body is fixedly provided between the stator, the guard caps and the belt pulley, and the annular seal encloses a sealed cavity. The stator, the rotor and the guard caps are fixedly provided in the sealed cavity.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: July 20, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Xin Li
  • Patent number: 11053990
    Abstract: Systems and method for a two-way clutch are provided. In some configurations, the two-way clutch includes a driven member having a first mating surface, a drive member having a second mating surface, and a locking mechanism arranged between the first mating surface and the second mating surface. The locking mechanism is operable to contact the first mating surface and the second mating surface, in response to an outside force applied to the drive member that loads the locking mechanism. The two-way clutch further includes an engaging member. The engaging member provides a predetermined interference on the locking mechanism to hold the locking mechanism off of at least one of the first mating surface and the second mating surface, when the locking mechanism is in an unloaded state.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: July 6, 2021
    Assignee: HUSCO Automotive Holdings LLC
    Inventors: Michael Kujak, Allen Tewes, Austin Schmitt
  • Patent number: 11047270
    Abstract: A valve train may include a camshaft, a cam sleeve adjustable in an axial direction between first and second positions and non-rotatably arranged on the camshaft, a first cam and at least one second cam, a pin and at least one cam follower mounted thereon, a guide contour arranged on the cam sleeve and having first and second guide tracks, and a control pin optionally engaging in the first or second guide track to adjust the cam sleeve between the first and second positions. The at least one cam follower in the first and second positions may interact respectively with the first and second cams. On the camshaft or an internal surface of the cam sleeve, first and second snap-in recesses and a third snap-in recess therebetween may be arranged. A snap-in device having a snap-in element preloaded into the snap-in recesses may be provided, the snap-in recess fixing the cam sleeve in the first or second position. The first and second guide tracks may intersect in an intersection region.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: June 29, 2021
    Inventors: Patrick Altherr, Thorsten Ihne, Rolf Kirschner, Mario Mohler, Markus Walch
  • Patent number: 11041412
    Abstract: A valve timing controller includes: a driving-side rotating body rotating in synchronization with a crankshaft of an internal combustion engine; a driven-side rotating body disposed coaxially with a rotation axis of the driving-side rotating body and rotating integrally with a valve opening and closing camshaft; advancing and retarding chambers formed between the driving-side and driven-side rotating bodies; a control valve unit controlling supply and discharge of a fluid to and from the advancing and retarding chambers; and a check valve unit disposed upstream of the control valve unit in a supply flow passage. A pressure space is provided between the control valve and check valve units, the control valve unit has a flow passage structure, and the check valve unit includes a supply flow passage and a return check valve.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: June 22, 2021
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takeo Asahi, Yuji Noguchi, Kazuo Ueda
  • Patent number: 11008902
    Abstract: A valve timing adjustment device having a phase adjustment unit including an input rotator, a driving rotator that rotates in conjunction with a crankshaft, a driven rotator that rotates in conjunction with a camshaft that changes a relative rotation phase between the driving rotator and the driven rotator. A controller is configured to perform a startup phase control when operation of the internal combustion engine is started, the startup phase control including setting the relative rotation phase to a predetermined initial phase, and perform a startup preparation control during a period after the internal combustion engine is stopped and before the startup phase control is performed, the startup preparation control including changing the relative rotation phase.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: May 18, 2021
    Assignee: DENSO CORPORATION
    Inventors: Hiroki Takahashi, Kenji Tada
  • Patent number: 11008904
    Abstract: The present disclosure relates to a cover element for a camshaft phaser and a camshaft phaser. The cover element includes a journal and a cover plate, the journal is used to form sealing engagement with an oil seal, and the journal and the cover plate are connected by welding. A positioning portion is formed on the surface of the cover plate for positioning the journal. The cover element is formed by welding the cover plate and the journal, which are processed separately, so as to conveniently perform different processing of the cover plate and the journal. A positioning portion for positioning the journal is formed on the surface of the cover plate so as to easily position the journal during the welding process, which enables the journal and the cover plate to be easily welded together without requiring complicated fastening. This improves processing efficiency and reduces production costs.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: May 18, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Xin Li
  • Patent number: 11002159
    Abstract: A camshaft phaser is provided that includes a stator, a rotor having a plurality of vanes that form fluid chambers with the stator, and a timing wheel attached to the rotor via a spline joint arranged between the rotor and timing wheel. The spline joint is configured to prevent axial and radial movement of the timing wheel relative to the rotor.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: May 11, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Timothy Simon
  • Patent number: 10995638
    Abstract: A method for diagnosing the valve timing of an internal combustion engine, a characteristic curve of an actual intake manifold pressure signal being ascertained as a function of a crankshaft signal, the characteristic curve of the actual intake manifold pressure signal being compared to a characteristic curve of a setpoint intake manifold pressure signal and a shift of the valve timing being diagnosed in the event of a specifiable deviation of the actual intake manifold pressure signal from the setpoint intake manifold pressure signal.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: May 4, 2021
    Assignee: Robert Bosch GmbH
    Inventor: Domenico Traballano
  • Patent number: 10989079
    Abstract: An ECU (101) causes lock pin-release hydraulic pressure to be applied to an advance-side lock pin-release oil passage (5a) to disengage an advance-side lock pin (6) from an advance-side engagement groove (9), thereby making a rotor (1) rotatable in an advance direction, and forming a clearance communicating with a retard-side lock pin-release oil passage (5c), between the advance-side engagement groove (9) and the advance-side lock pin (6). Next, the ECU (101) causes hydraulic pressure to be applied to advancing hydraulic chambers (16) to rotate the rotor (1), and causes the lock pin-release hydraulic pressure to be applied through the clearance and through the retard-side lock pin-release oil passage (5c) to a retard-side engagement groove (10) to disengage a retard-side lock pin (7).
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: April 27, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takuya Chikayama, Masayuki Yokoyama
  • Patent number: 10975699
    Abstract: A hydraulic device for an internal combustion engine or a gearing system, the hydraulic device including a housing featuring a chamber wall structure which delineates a pressure chamber for a pressurised hydraulic fluid; an actuating member which can be adjusted in the housing relative to the chamber wall structure in an actuating direction and in an actuating counter direction opposite to the actuating direction in order to adjust the delivery volume or phase position; and a sealing element including a sealing structure and a spring structure which is supported or moulded on one of the chamber wall structure and the actuating member, preferably the actuating member, and presses the sealing structure into sealing contact with the other of the chamber wall structure and the actuating member with a spring force in order to seal off the pressure chamber. The sealing structure and the spring structure are moulded in one piece.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: April 13, 2021
    Assignee: Schwäbische Hüttenwerke Automotive GmbH
    Inventors: Uwe Meinig, Dominik Baur
  • Patent number: 10975737
    Abstract: A cam plate is coupled to a driven-side shaft and is rotatable relative to a housing. A gear is placed on a side of the cam plate, which is opposite to the driven-side shaft. The housing has a contact surface that is configured to contact a wall surface of the cam plate, which is located on one side in an axial direction of the housing. Among two external toothed portions, one external toothed portion is located on an opposite side of the contact surface, which is opposite to the gear in the axial direction. The cam plate has a bearing portion that is located on a side of the contact surface, which is opposite to the gear, and the bearing portion has an outer peripheral surface configured to receive a radial load applied from an inner peripheral surface of the housing in a radially inward direction.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: April 13, 2021
    Assignee: DENSO CORPORATION
    Inventor: Genki Suzuki
  • Patent number: 10961941
    Abstract: A physics-based charge temperature model to calculate a charge air temperature for an automobile vehicle includes multiple variables. The multiple variables include: a first variable defining an engine speed of an engine defining revolutions per minute of a crankshaft of the engine; a second variable defining a cam position; a third variable defining an engine coolant temperature; a fourth variable defining an air intake temperature; a fifth variable defining an engine air flow; and a sixth variable defining a firing fraction of the engine. A controller provides multiple lookup tables. The controller controls operation of the engine using the multiple variables and data in the multiple lookup tables to calculate a charge air temperature for individual intake strokes of at least one cylinder of the engine.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: March 30, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Wesley R. Haney, Layne K. Wiggins, Shawn W. Murphy
  • Patent number: 10954868
    Abstract: A method for operating an internal combustion engine having a camshaft phase adjuster, including: providing a nonlinear final control element model, which indicates via a functional relationship an angular velocity of a relative adjustment of the camshaft phase adjuster as a function of an actuator correcting variable for the control of the camshaft phase adjuster; carrying out a control based on a deviation between a predefined camshaft angle adjustment setpoint value, and a camshaft angle adjustment actual value, to obtain as a control output a setpoint positioning rate of the camshaft phase adjuster; calculating the actuator correcting variable as a function of the setpoint positioning rate using an inverted final control element model; applying a predefined correction variable to the actuator correcting variable; controlling the camshaft phase adjuster using the actuator correcting variable to which the correction variable has been applied, to operate the internal combustion engine.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: March 23, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Benedikt Alt, Konrad Moser, Patrick Grau
  • Patent number: 10927721
    Abstract: A camshaft phaser includes a reservoir cover on a rear side, facing the cams, and a timing wheel on a front side. Fluid is routed from the oil control valve to the reservoir via radial channels defined between a rear cover and a thrust interface. Fluid may also be routed from a radial bearing to the reservoir via these channels. A spool in the oil control valve assembly has an internal passageway to route fluid from a front cavity to the radial channels.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: February 23, 2021
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Andrew Mlinaric
  • Patent number: 10914203
    Abstract: An internal combustion engine includes a cylinder head, a support structure, a cam pulley, and a seal member. The support structure is provided above the cylinder head and supports the camshaft. The cam pulley is provided at an end of the camshaft. A timing belt is wound around the cam pulley. A seal member is provided to cover a gap provided between the cylinder head and the support structure at a facing surface facing the cam pulley. The seal member provides sealing between the cylinder head and the support structure in an axial direction of the camshaft.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: February 9, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takanobu Arai
  • Patent number: 10914204
    Abstract: A sleeve includes: a supply port communicated with a hydraulic oil supply source; a primary control port communicated with a retard chamber, a secondary control port communicated with an advance chamber; and a drain port communicated with an outside of a valve timing adjustment device. A spool includes: a pressure accumulation space formed at an inside of the spool; a supply passage configured to connect between the pressure accumulation space and the supply port; a primary control passage configured to connect between the pressure accumulation space and the primary control port; a secondary control passage configured to connect between the pressure accumulation space and the secondary control port; and a recycle passage configured to connect between the primary control port or the secondary control port and the pressure accumulation space. The recycle passage and the drain port are connected with each other at the inside of the sleeve.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: February 9, 2021
    Assignee: DENSO CORPORATION
    Inventor: Tetsuro Mitsutani
  • Patent number: 10900387
    Abstract: A mechanical cam phasing system includes a stator, a cradle rotor, a first locking mechanism having a first locking feature and a second locking feature, a cage, and a second locking mechanism rotationally coupled to the cradle rotor and selectively moveable between a locking state and a phasing state. In the locking state, a clearance is provided between the cradle rotor and the cage to allow the cradle rotor to rotate relative to the cage and lock the first locking feature or the second locking feature. In the phasing state, the clearance between the cradle rotor and the cage is reduced to ensure rotational coupling between the cradle rotor and the cage in at least one direction, which displaces the first locking feature or the second locking feature relative to the cradle rotor and enables the cradle rotor to rotate relative to the stator.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: January 26, 2021
    Assignee: HUSCO Automotive Holdings LLC
    Inventors: Michael Kujak, Austin Schmitt, Alexander Schlarmann
  • Patent number: 10895179
    Abstract: A camshaft phaser assembly, including: an axis of rotation; a first hydraulic camshaft phaser including a first stator arranged to receive rotational torque, a first rotor including a plurality of first through-bores, and a first plurality of phaser chambers circumferentially bounded by the first stator and the first rotor; a second hydraulic camshaft phaser including a second stator non-rotatably connected to the first stator, a second rotor, and a second plurality of phaser chambers circumferentially bounded by the second stator and the second rotor; a first trigger wheel including a plurality of second through-bores connected to the plurality of first through-bores, non-rotatably connected to the first rotor, and arranged to identify a rotational position of the first rotor; and a second trigger wheel non-rotatably connected to the second rotor and arranged to identify a rotational position of the second rotor.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: January 19, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Michael Kandolf
  • Patent number: 10883396
    Abstract: A hydraulic camshaft phaser including: a stator including a surface facing radially outwardly, and defining a recess; a rotor arranged to be non-rotatably connected to a camshaft and rotatable with respect to the stator; a spiral spring disposed in the recess and including a first end non-rotatably connected to the rotor and a second end non-rotatably connected to the stator; and a resilient cover plate directly connected to the surface facing radially outwardly, enclosing the spiral spring in the recess, and circumferentially preloaded. A hydraulic camshaft phaser including: a stator: arranged to receive rotational torque and defining a recess and a groove; a rotor rotatable with respect to the stator; a spiral spring disposed in the recess; and a resilient cover plate including a portion disposed in the groove, enclosing the spiral spring in the recess, and compressively engaging the stator in a radially inward direction.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: January 5, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Renato de Oliveira Ghiraldi, Alexandre Camilo
  • Patent number: 10876560
    Abstract: A camshaft phaser includes a stator, a rotor rotatable with respect to the stator, and a connector configured for being nonrotatably fixed to the rotor. The connector is configured for being nonrotatably connected to an outer circumferential surface of a camshaft. A method of constructing a camshaft phaser for an internal combustion engine includes providing a stator and a rotor rotatable with respect to the stator; and providing a connector configured for nonrotatably fixing to the rotor, the connector being configured for being nonrotatably connected to an outer circumferential surface of a camshaft.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: December 29, 2020
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Alexandre Camilo, Renato de Oliveira Ghiraldi
  • Patent number: 10865663
    Abstract: A camshaft adjusting system (1) is provided for a first camshaft (2) and a second camshaft (3) which are arranged concentrically with respect to one another, the second camshaft (3) being arranged within the first camshaft (2). A vane-cell type hydraulic camshaft adjuster (4) is configured for adjusting the first camshaft (2) and an electric camshaft adjuster (5) is configured for adjusting the second camshaft (3). A front cover (7) which is fastened to a stator (6) of the hydraulic camshaft adjuster (4) and which closes off the camshaft adjuster (4) at a side facing away from the camshaft has an internal toothing (8) for supporting a flex pot (9) which is attached to the second camshaft (3) and which is designed for receiving torque from the electric camshaft adjuster (5). A camshaft adjusting unit having the camshaft adjusting system (1) and two camshafts (2, 3) is also provided.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: December 15, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Jurgen Weber, Marco Hildebrand, Daniel Heise
  • Patent number: 10865665
    Abstract: Cam phasing systems and methods are provided. In particular, a cam phasing system is provided that includes a reduced number of components when compared to current mechanical cam phasing systems. The cam phasing system includes a helix locking design that is configured to frictionally lock an helix rod during cam torque pulses.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: December 15, 2020
    Assignee: HUSCO Automotive Holdings LLC
    Inventors: Austin Schmitt, Allen Tewes, Michael Kujak, Brian Heidemann
  • Patent number: 10858968
    Abstract: A hydraulic camshaft adjuster adjusts the control time of gas exchange of an internal combustion engine. A reservoir for storing pressure medium is formed on a cover of the hydraulic camshaft adjuster. An overflow opening of the cover is dimensioned such that a volume of pressure medium remains in the reservoir when the hydraulic camshaft adjuster is stationary. This ensures that pressure medium is supplied to the return valve of a central locking mechanism when the engine is running.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: December 8, 2020
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Gerhard Scheidig, Jochen Thielen, Enno Schmitt
  • Patent number: 10858966
    Abstract: A valve timing change device includes: a housing rotor (10); a vane rotor; a fastening bolt (40) for fastening the vane rotor to a cam shaft; and an advance angle oil passage that constitutes a ring-shaped groove communicating with an advance angle chamber and a delay angle oil passage that constitutes a ring-shaped groove communicating with a delay angle chamber, via oil passages which are open at intervals on an outer circumferential surface of the fastening bolt. The vane rotor includes: a rotor body (20) having a small-diameter inner circumferential portion (23) and a large-diameter inner circumferential portion (24); and a rotor sleeve (30) that is fitted into the large-diameter inner circumferential portion, is in tight contact with the outer circumferential surface (41a) of the fastening bolt, and demarcates the advance angle oil passage (23a) in cooperation with the small-diameter inner circumferential portion.
    Type: Grant
    Filed: December 26, 2016
    Date of Patent: December 8, 2020
    Assignee: MIKUNI CORPORATION
    Inventors: Takahiro Ogura, Chikara Oikawa
  • Patent number: 10858964
    Abstract: A single-row planetary bearing includes a single row of spherical rolling elements between an outer ring and an inner ring. A planetary gear is supported by a thrust bearing portion and is radially supported by the outer ring. The planetary gear performs a planetary motion while engaging with a driving rotor and a driven rotor at an eccentric side to adjust a rotational phase between the driving rotor and the driven rotor. The thrust bearing portion supports the planetary gear that is tilting with respect to the revolution centerline. The planetary gear has a recessed portion opened toward the thrust bearing portion. When the rotational phase is adjusted to a specific phase, the recessed portion is positioned at an anti-eccentric side opposite to the eccentric side with respect to a rotation centerline of the planetary gear.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: December 8, 2020
    Assignee: DENSO CORPORATION
    Inventors: Makoto Otsubo, Hiroki Takahashi
  • Patent number: 10844756
    Abstract: The disclosure relates to a hydraulic camshaft adjuster having a stator, which is synchronously rotatable with a crankshaft of the internal combustion engine, a rotor rotatably arranged relative to the stator and synchronously rotatable with a camshaft, two groups of working chambers that can each be loaded with a pressure medium in a pressure medium circuit, and a central locking device for locking the rotor in a defined position relative to the stator. The stator is delimited on a first front end by a multi-part locking cover. The multi-part locking cover has a first locking cover and a second locking cover. A first stage of a mechanical ratchet is formed on the first locking cover, and at least one further stage of the mechanical ratchet is formed on the second locking cover.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: November 24, 2020
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Jochen Thielen, Michael Keck, Enno Schmitt
  • Patent number: 10837324
    Abstract: A four-stroke internal combustion engine is disclosed. A camshaft and a crankshaft if the engine are synchronised to rotate at a same rotational speed. A first linkage arrangement is configured to change the motion of an exhaust valve head. A second linkage arrangement is configured to change the motion of the intake valve head. A control unit is configured for controlling the first linkage arrangement to selectively prevent or reduce the motion of the exhaust valve head and for controlling the second linkage arrangement to selectively prevent or reduce the motion of the intake valve head.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: November 17, 2020
    Assignee: Scania CV AB
    Inventors: Andreas Dahl, Eric Olofsson
  • Patent number: 10837323
    Abstract: A four-stroke internal combustion engine is disclosed. A camshaft and a crankshaft if the engine are synchronized to rotate at a same rotational speed. A first linkage arrangement is configured to change the motion of an exhaust valve head. A second linkage arrangement is configured to change the motion of the intake valve head. A control unit is configured for controlling the first linkage arrangement to selectively prevent the motion of the exhaust valve head and for controlling the second linkage arrangement to selectively prevent the motion of the intake valve head.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: November 17, 2020
    Assignee: Scania CV AB
    Inventors: Andreas Dahl, Eric Olofsson
  • Patent number: 10815842
    Abstract: A camshaft phaser arrangement configured for a concentric camshaft assembly having inner and outer camshafts is provided. The camshaft phaser arrangement includes a first camshaft phaser that is configured to be non-rotatably connected to both the inner and outer camshafts, and a second camshaft phaser that is configured to be non-rotatably connected to one of the inner or outer camshafts.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: October 27, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Steven Burke, Dan Zehan
  • Patent number: 10801375
    Abstract: A phase adjustment mechanism for setting a relative rotational phase of a driven-side rotational body to a drive-side rotational body of a valve opening-closing timing control device includes a output gear around a rotational axis, an input gear being rotated around an eccentric axis, and an eccentric member. The eccentric member includes an outer peripheral surface with a first arc portion, a second arc portion, a plate spring fitted between the first arc portion and the second arc portion, and a spaced portion. Each of the first arc portion and the second arc portion is disposed from a position less than 90 degrees to a position more than 90 degrees as a central angle with respect to the eccentric axis from a biasing direction of the plate spring in the peripheral direction.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: October 13, 2020
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Tomoharu Otake, Hiroki Mukaide
  • Patent number: 10787938
    Abstract: The number of advance chambers is larger than the number of retard chambers in an intake variable valve timing (VVT), whereas the number of retard chambers is larger than the number of advance chambers in an exhaust VVT. Accordingly, with limitation of an oil pressure that can be used by the VVTs, a pumping loss in a transition period in which a valve overlap amount is changed by advancing or retarding a valve timing can be reduced.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: September 29, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Toshiaki Nishimoto, Keiji Araki
  • Patent number: 10787973
    Abstract: A internal combustion engine comprises an engine block defining a cylinder bore, and a piston slideably supported within the cylinder bore. The piston slides reciprocally within the cylinder bore throughout an engine cycle through a piston compression stroke having a compression stroke length and a piston expansion stroke having an expansion stroke length. A crankshaft is rotatably supported by the engine block and rotatable about a crank axis, and a drive gear is co-axially mounted on the crankshaft. A control shaft is rotatably supported by the engine block and rotatable about a control axis that is parallel to and distal from the crank axis. A driven gear is coaxially mounted on the control shaft. A link rod is rotatably connected to the crankshaft and rotatable relative to the crankshaft about an axis that is parallel to and distal from the crank axis.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: September 29, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Ryan M. Heinbuch, Rodney E. Baker, Justin E. Ketterer
  • Patent number: 10781728
    Abstract: A kit including a cam phaser, including a central valve that is configured to distribute a pressure fluid, and an actuator that controls the central valve, a rotor that is rotatably supported in a stator, wherein the cam phaser is driven or drivable by a dry running traction drive, wherein a pressure fluid distribution chamber that is fillable with the pressure fluid through the central valve is provided between the cam phaser and the actuator, wherein the pressure fluid distribution chamber is connected with an armature chamber of the actuator and sealed towards an ambient, wherein the actuator includes at least one armature that is movable by a coil, a pole core and a pole tube that form a pole tube assembly, and wherein the pressure fluid distribution chamber is sealed by a bonded or friction locking and form locking connection of the actuator with the central valve.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: September 22, 2020
    Assignee: ECO Holding 1 GmbH
    Inventors: Stephan Wanner, Bernhard Schatz, Andre Selke
  • Patent number: 10781727
    Abstract: A cam phaser for a camshaft, the cam phaser including a stator that is operatively connected with a crankshaft through a drive wheel; a rotor that is connectable torque proof with a camshaft and rotatable relative to the stator, wherein the drive wheel is connected torque proof or integrally configured in one piece with a stator base element or with a stator cover that is connected to and sealed relative to the stator base element, wherein a vane of the rotor is arrangeable between two bars of the stator and an intermediary space that is configured between the two bars is divided by the vane into a first pressure cavity and a second pressure cavity.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: September 22, 2020
    Assignee: ECO Holding 1 GmbH
    Inventors: Sebastian Belicke, Andreas Berwinkl, Norbert Loesch
  • Patent number: 10781758
    Abstract: A control device is for an internal combustion engine including a throttle valve and a variable valve mechanism, and configured to be operated at a prescribed target air-fuel ratio and capable of restarting from an intermittent stop. The control device includes an electronic control unit configured to start the internal combustion engine after starting an intake air amount reduction control, when a fuel injection amount equal to or larger than a prescribed amount is required and an intermittent stop time is equal to or longer than a prescribed time in a case of the restart from the intermittent stop. The intermittent stop time is a stop time from an immediately preceding intermittent stop to a current restart of the internal combustion engine. The intake air amount reduction control is a control of reducing the intake air amount by operating the variable valve mechanism with the throttle valve kept fully closed.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: September 22, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshihito Kanno, Gohki Kinoshita, Hiroki Morita, Yutaro Kawatsu
  • Patent number: 10773308
    Abstract: A rotor for a variable valve timing engine is disclosed in which the opposing planar surface(s) of the rotor have one or more recesses formed therein in order to balance, equilibrate, or equalize the planar surface areas on the opposing surfaces. Among other things, this can improve the accuracy and efficiency with which the rotor is ground during a related method of manufacturing the rotor.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: September 15, 2020
    Assignee: GKN Sinter Metals, LLC
    Inventors: Douglas R. O'Hara, James T. Hill
  • Patent number: 10767518
    Abstract: A hydraulically operated camshaft phasing mechanism has two lock pins. One of the lock pins engages at an intermediate position and an end lock pin engages near one of the stops at the end of the phaser range of authority. At least one of the locking pins, preferably the end lock pin, when the vane is at an end stop position, is engaged by oil pressure and spring loaded to release when the oil pressure side of the end lock pin is vented.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: September 8, 2020
    Assignee: BorgWarner Inc.
    Inventors: Franklin R. Smith, Daniel Brown
  • Patent number: 10760454
    Abstract: An oil control valve for a cam phaser of an internal combustion engine where the spool is positioned by an external actuator. The valve includes a spool assembly including a spool that is axially movable in a central opening, and there is at least one groove in the spool. The groove substantially increases fluid flow through the hydraulic valve when opened. By controlling the size and position of the groove, the amount of the fluid flow may be controlled. Further fluid flow control may be had by controlling the size of holes in the spool. The increase of fluid flow attributable to the groove may be at least 50%, 100% or even 200% compared with the at least one groove being absent.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: September 1, 2020
    Assignee: ECO Holding 1 GmbH
    Inventor: Daniel Stanhope
  • Patent number: 10753238
    Abstract: The invention relates to a first rotor part for a camshaft adjuster, wherein the first rotor part is configured in the form of a disc, and wherein the first rotor part has an encircling shoulder in a circumferential direction, said shoulder extending in a first axial direction beyond the first end side, wherein the first rotor part has at least one inner first opening which is arranged on the first inner casing on that side of the shoulder that is remote from the first end side and which is connected to the first end side via a first fluid duct which extends outwards in the radial direction from the shoulder through the first rotor part; wherein the first rotor part is produced in one part by powder metallurgy with all the inner first openings and first fluid ducts and the shoulder. The invention also relates to a pressing tool for producing a first rotor part.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: August 25, 2020
    Assignee: GKN Sinter Metals Engineering GmbH
    Inventors: Rainer Schmitt, Hasim Tekines, Sascha Frey, Ümit Aydin
  • Patent number: 10738663
    Abstract: The present disclosure provides a locking structure of a valve timing adjustment apparatus for an internal combustion engine, using torque from a camshaft and the pressure of working fluid. The locking structure includes an anti-rotation mechanism for inhibiting or preventing a position change between a rotor and a housing by preventing relative rotation of the rotor to the housing. The anti-rotation mechanism further includes: a plurality of locking grooves which are formed on the ratchet plate with different depths and connected to each other; and a locking pin member. In particular, the locking pin member has: a hollow outer pin elastically disposed in a fitting hole formed in vanes, an inner pin elastically disposed inside the outer pin, and a lifter ring coupled to the upper portion of the outer pin to slide on the inner side of the fitting hole.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: August 11, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, DELPHI POWERTRAIN SYSTEMS KOREA LTD., PINE ENGINEERING LTD.
    Inventors: Koun Young Jang, Sung Dae Kim, Sang Ho Lee, Jae Young Kang, Sung Hoon Baek, Soo Deok Ahn
  • Patent number: 10738724
    Abstract: Systems and methods for operating an engine with deactivating valves are presented. In one example, deactivated valves may be reactivated to increase a rate of camshaft phase indexing relative to engine crankshaft position. However, if a desired rate of camshaft indexing is low, the engine cylinders may remain deactivated based on the low rate of desired camshaft indexing.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: August 11, 2020
    Assignee: Ford Global Technologies, LLC
    Inventor: Chris Paul Glugla
  • Patent number: 10731520
    Abstract: A variable cam timing phaser arrangement is disclosed, comprising: a rotor having at least one vane; a stator co-axially surrounding the rotor, having at least one recess for receiving the at least one vane, wherein the at least one vane divides the at least one recess into a first and second chambers; and a control assembly for regulating hydraulic fluid flow from the first chamber to the second chamber or vice-versa. The control assembly comprises a first check valve, a second check valve and a selective deactivation device. The check valves are arranged in series in a fluid passage between the first chamber and the second chamber. The selective deactivation device is deployable and is configured to selectively deactivate either the first check valve or the second check valve upon deployment. By timing the deployment of the deactivation device, the direction of flow between the first and second chambers can be controlled.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: August 4, 2020
    Assignee: Scania CV AB
    Inventors: Daniel Olovsson, Mikael Eriksson