Camshaft Or Cam Characteristics Patents (Class 123/90.17)
  • Patent number: 11441500
    Abstract: An engine torque estimating apparatus having a processor and a memory accessed by the processor. The processor performs a torque estimating that calculates time series data of an estimated indicated torque, based on a crank angle having been extracted from an output of a crank angle sensor of an engine including a plurality of cylinders; an estimated indicated torque-related value extracting that extracts an estimated indicated torque-related value, for each of the cylinders, from the time series data of the estimated indicated torque, for each of the cylinders; and average indicated torque correct value acquiring that converts, for each of the cylinders, the estimated indicated torque-related value into an average indicated torque correct value having been calculated based on a cylinder internal state of the engine in correspondence to the estimated indicated torque-related value.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: September 13, 2022
    Assignee: TRANSTRON INC.
    Inventors: Masatoshi Ogawa, Hiromitsu Soneda
  • Patent number: 11434787
    Abstract: A valve timing adjustment device includes a driving-side rotatable body and a driven-side rotatable body. The driving-side rotatable body is configured to be rotated about a rotational axis synchronously with a drive shaft and includes a sprocket portion and a housing portion. The sprocket portion is configured to receive a drive force transmitted from the drive shaft. The housing portion is shaped in a tubular form and is formed separately from the sprocket portion. The driven-side rotatable body is configured to be rotated about the rotational axis synchronously with a driven shaft.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: September 6, 2022
    Assignee: DENSO CORPORATION
    Inventor: Takahito Kamiya
  • Patent number: 11421608
    Abstract: Methods and systems are provided for reducing hydrocarbon emissions from an engine. In one example, a method may include adjusting timing profiles of a first and a second exhaust valve to selectively allow pneumatic communication between a cylinder and exhaust ports of an exhaust manifold during an engine cold start.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: August 23, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: Xiaogang Zhang, Steven Wooldridge, Brad VanDerWege
  • 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: 11408336
    Abstract: An example embodiment of an all-stroke-variable internal combustion engine may include a piston slidably positioned within an engine cylinder for asymmetrical reciprocation and a primary crankshaft and a half-speed crankshaft to be operatively engaged for rotation of the half-speed crankshaft at half of a speed of the primary crankshaft, wherein the rotation of the half-speed crankshaft at half of the speed of the primary crankshaft to result in the asymmetrical reciprocation of the piston so as to produce a stroke length that is independently variable over four distinct strokes of a full cycle of the all-stroke-variable internal combustion engine.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: August 9, 2022
    Inventor: Robert P. Hogan
  • 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: 11396831
    Abstract: A phaser which has three camshaft start positions at start-up during cranking before the engine can fire. By having three possible start positions of the phaser, there is an increase in flexibility of the cam position at startup during cranking. The three start positions can also be achieved in open loop, reducing the complexity of the control system needed at cranking.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: July 26, 2022
    Assignee: BorgWarner, Inc.
    Inventor: Anand Barve
  • Patent number: 11384662
    Abstract: A valve assembly for controlling an apparatus for camshaft timing adjustment being driven by a hydraulic pump, having a valve body with a first control port, a second control port, a high pressure port and a low pressure port, the valve assembly having a first state for enabling a flow of a hydraulic fluid from the high pressure port to the first control port and from the second control port to the low pressure port, respectively, and a second state for enabling a flow of the hydraulic fluid from the high pressure port to the second control port and from the first control port to the low pressure port, respectively. The valve body has central actuating through-hole extending axially through the valve body defining an axial direction.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: July 12, 2022
    Assignee: Hella GmbH & Co. KGaA
    Inventor: Hagen Mueller
  • Patent number: 11352916
    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: January 22, 2021
    Date of Patent: June 7, 2022
    Assignee: HUSCO Automotive Holdings LLC
    Inventors: Michael Kujak, Austin Schmitt, Alexander Schlarmann
  • Patent number: 11352917
    Abstract: An apparatus for camshaft timing adjustment, having a drive disc and a hub rotationally supported relative to each other and defining a common rotational axis wherein the hub is arranged within the drive disc or vice versa, a vane being accommodated in an adjusting chamber defined by the drive disc and the hub and separating the adjusting chamber into a first sub-chamber and a second sub-chamber, wherein the vane is attached to the hub or the drive disc, a hydraulic pump having a high pressure pump chamber, a low pressure pump chamber and a pump for pumping a hydraulic fluid from the low pressure pump chamber to the high pressure pump chamber, each pump chamber being fluidly connected to the first sub-chamber and the second sub-chamber.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: June 7, 2022
    Assignee: Hella GmbH & Co. KGaA
    Inventors: Hagen Mueller, Theodor Hueser
  • Patent number: 11352913
    Abstract: Some embodiments of a present disclosure provide a variable valve lift device. The variable valve lift device includes a main shaft, a sleeve, an oil cylinder and a valve mechanism. The sleeve is provided on the main shaft in a sleeve manner, can be driven by the main shaft to rotate together with the main shaft, and can further linearly move relative to the main shaft along an axis direction of the main shaft. A cam assembly is disposed on the sleeve, and includes at least two cams with different projection heights. The oil cylinder includes a cylinder barrel and a piston disposed in the cylinder barrel, the cylinder barrel is fixed onto the main shaft, the piston is fixedly connected to the sleeve. Some embodiments of the present disclosure provide an automobile having the above variable valve lift device.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: June 7, 2022
    Assignee: GUANGZHOU AUTOMOBILE GROUP CO., LTD.
    Inventors: Zhen Lu, Hainian Lian, Liang Chen, Qizhou Zhang
  • Patent number: 11313448
    Abstract: A harmonic drive including a housing component (4) and a drive element (18) which is held on the housing component, can be deformed by a wave generator (14), is in the form of a flanged bushing and has a toothing region (17) having a cylindrical basic shape and a disc section (19) which adjoins the toothing region (17). Adjoining the disc section (19) there is a bushing section (20) which is concentric to the toothing region (17), overlaps the latter in the axial direction and is held interlockingly between a cylindrical edge section (21), which is thick-walled in comparison with the bushing section (20), of the housing component (4) and an intrinsically rigid component (22) which is likewise solid in comparison with the flanged bushing (18).
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: April 26, 2022
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Jurgen Weber, Marco Hildebrand, Daniel Heise
  • Patent number: 11313256
    Abstract: An Oldham coupling includes an engagement arm. At least either a driving-side rotor or an input gear has an engagement portion engaged with the engagement arm and is connected to the Oldham coupling. The engagement arm has a pair of arm flat surface portions perpendicular to a rotational direction of the driving-side rotor. The engagement portion has a pair of engagement flat surface portions that the arm flat surface portions face in a sliding contact manner. Each arm flat surface portion is, within a range where the arm flat surface portion slides against a facing engagement flat surface portion, always in contact with an overlapping portion of the engagement flat surface portion with the arm flat surface portion when viewed from a direction perpendicular to a sliding direction of the Oldham coupling and in which the arm flat surface portion and the engagement flat surface portion overlap each other.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: April 26, 2022
    Assignee: AISIN CORPORATION
    Inventors: Hajime Sano, Hiroki Mukaide, Kenji Ikeda, Tomoharu Otake, Kenta Koide
  • Patent number: 11306628
    Abstract: A continuously variable valve duration apparatus includes a camshaft, a cam unit on which a cam is formed, a guide bracket including an upper guide boss, an internal wheel configured to transmit rotation of the camshaft to the cam unit, a wheel housing in which the internal wheel is rotatably inserted, wherein a guide thread is formed in a portion of the wheel housing, and of which a guide shaft is formed to be movably inserted into the upper guide boss, a worm wheel to which an internal thread engaging with the guide thread is formed in the worm wheel, and to which an external thread is formed thereon, a control shaft on which a control worm engaged with the external thread is formed, and an upper bushing mounted on a lower portion of the upper guide boss to support the guide shaft.
    Type: Grant
    Filed: December 5, 2020
    Date of Patent: April 19, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Hyeon Woo Kim, Kyoung Pyo Ha, Back Sik Kim, Jong Gu Kim
  • Patent number: 11300017
    Abstract: A hydraulic valve for a cam phaser, the hydraulic valve including a bushing including a piston that is movable in a bore along a longitudinal direction; a supply connection configured to feed 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; and a first check valve associated with the first operating connection and a second check valve associated with the second operating connection, wherein 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 one of the first tank drain connection and the second tank drain connection by moving the piston, wherein the hydraulic valve includes five switching positions.
    Type: Grant
    Filed: February 10, 2019
    Date of Patent: April 12, 2022
    Assignee: ECO Holding 1 GmbH
    Inventors: Udo Diederichs, Michael Brumm
  • Patent number: 11280228
    Abstract: A variable camshaft timing (VCT) assembly includes an independent VCT device that can couple with a first camshaft and change an angular position of the first camshaft relative to the angular position of a crankshaft. The independent VCT device has a stator and an output fixedly coupled with the first camshaft. The VCT assembly also includes a dependent VCT device that angularly adjusts a second camshaft in response to angular adjustment of the first camshaft. The dependent VCT device has a camshaft link coupled with the output of the independent VCT device; the camshaft link has a slot positioned radially outwardly from an axis of camshaft rotation.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: March 22, 2022
    Assignee: BORGWARNER, INC.
    Inventor: Chad McCloy
  • Patent number: 11268412
    Abstract: A cam phaser mechanism includes an inner ring (rotor), and outer ring (stator), and a face plate. The inner ring that is wider than outer ring. The face plate is contoured such that it is thinner in a region in contact with the inner ring and thicker in a region in contact with the outer ring, thus compensating for the different widths of the inner ring and outer ring. The stator is fastened to the face plate by a plurality of bolts which are threaded into the face plate. The greater width of the face plate in this region provides sufficient thread engagement without increasing the overall width of the cam phaser mechanism.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: March 8, 2022
    Assignee: Schaeffler Techologies AG & Co. KG
    Inventor: Shannon Bell
  • Patent number: 11268603
    Abstract: A harmonic drive (1), including a wave generator (8), a flexible, externally toothed gear component (14), in particular in the form of a flex ring, which can be deformed by said wave generator, and at least one internally toothed gear component (4, 5) that meshes with the flexible, externally toothed gear component (14). The flexible, externally toothed gear component (14) has a non-circular basic shape in relation to its mechanically non-loaded state.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: March 8, 2022
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Jochen Thielen
  • Patent number: 11242775
    Abstract: A valve timing adjustment device includes a drive-side rotating body that rotates in conjunction with a crankshaft, a driven-side rotating body that rotates integrally with a camshaft, a speed reduction mechanism that transmits rotation while allowing relative rotation between the drive-side rotating body and the driven-side rotating body. The driven-side rotating body includes a fastening portion fastened to the end portion of the camshaft by a center bolt, a bearing portion that is located radially outward of the fastening portion and that axially supports the drive-side rotating body, and a fitting outer surface that is fitted to a regulating member on a side where an outer diameter of an axial contact surface with the other member on one side and the other side in the axial direction of the driven-side rotating body is large.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: February 8, 2022
    Assignee: DENSO CORPORATION
    Inventors: Takanobu Aochi, Hitoshi Maegawa, Tomohiro Hayashi, Hiroki Takahashi, Kenji Tada
  • Patent number: 11230950
    Abstract: An electrically-actuated variable camshaft timing (VCT) phaser is employed for use with an internal combustion engine (ICE). The electrically-actuated VCT phaser includes a gear set assembly and a fixture. The gear set assembly has an input gear and an output gear, among other possible components. The input gear receives rotational drive input from an engine crankshaft, and the output gear transmits rotational drive output to an engine camshaft. The fixture is secured in the gear set assembly. Amid installation of the electrically-actuated VCT phaser on the ICE, the fixture constrains rotational movement of the gear set assembly. After installation, the fixture can be removed from the gear set assembly.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: January 25, 2022
    Assignee: BORGWARNER, INC.
    Inventors: Chad McCloy, Mark Wigsten
  • Patent number: 11193398
    Abstract: A friction member is clamped between a driven shaft of an internal combustion engine and a vane rotor and includes an oil passage hole. The oil passage hole communicates between a first oil passage of the driven shaft a second oil passage of the vane rotor. Each of positioning arrangements includes a primary engaging portion of the vane rotor and a secondary engaging portion of the friction member. The positioning arrangements are configured to limit relative rotation between the vane rotor and the friction member in a communicating state where the first oil passage and the second oil passage are communicated with each other through the oil passage hole.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: December 7, 2021
    Assignee: DENSO CORPORATION
    Inventors: Yasuhiro Hamaoka, Tomoyuki Fukuyama
  • Patent number: 11193399
    Abstract: A variable camshaft timing (VCT) assembly for controlling angular positions of concentric camshafts. The VCT assembly includes an independent VCT device and a dependent VCT device. The independent VCT device is hydraulically- or electrically-actuated. The independent VCT device is coupled with a first concentric camshaft and has a first component that rotates during phasing movements. The first component has a first set of slots therein. The dependent VCT device is coupled with a second concentric camshaft. The dependent VCT device has a second component that lacks rotation during phasing movements, and has multiple phase lugs. The second component has a second set of slots therein. The phase lugs are received in the first set of slots and are received in the second set of slots.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: December 7, 2021
    Assignee: BORGWARNER, INC.
    Inventors: Robert Keefover, Brian Thomas Kenyon
  • Patent number: 11187115
    Abstract: The disclosure relates to a camshaft adjusting device with a dry belt, a central valve arranged within a camshaft adjuster, and an actuator acting on the central valve. An oil-tight wet space is formed by the camshaft adjuster and the actuator or a component supporting the actuator, and oil present in the wet space can be evacuated by means of an oil path. A portion of this oil path extends axially through the output element of the camshaft adjuster. This oil path can pass the end-side contact face between the output element and camshaft, opening out into an axial bore of the camshaft which is distanced radially from the axis of rotation of the camshaft adjusting device. The axial bore runs beneath an oil feed connection formed on the outer surface of the camshaft for feeding oil to the central valve.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: November 30, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Ali Bayrakdar
  • Patent number: 11174761
    Abstract: A variable camshaft timing (VCT) phaser assembly and control valve are employed for use in an internal combustion engine. The VCT phaser assembly has a housing and a rotor. The control valve is installed at a location that is remote of the housing and rotor, and apart from a center bolt site of the housing and rotor. The control valve has a valve housing and a spool located in the valve housing. The valve housing has different ports for fluid communication with a source, an advance line, and a retard line. One or more recirculation paths can be established at various times between the valve housing and the spool, depending upon the position of the spool in the valve housing.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: November 16, 2021
    Assignee: BORGWARNER, INC.
    Inventors: Augusto Fanzani, Davide Caldirola
  • Patent number: 11168589
    Abstract: An internal combustion engine includes exhaust-side and intake-side variable valve timing mechanisms, an oil passage defined in the cylinder head, an exhaust-side connection passage that branches from the oil passage to conduct oil to the exhaust-side variable valve timing mechanism, and an intake-side connection passage that branches from the oil passage to conduct oil to the intake-side variable valve timing mechanism. The connection passage that conducts oil to one of the exhaust-side variable valve timing mechanism and the intake-side variable valve timing mechanism that has a greater amount of oil leakage when oil having the same pressure is supplied to the variable valve timing mechanisms to operate the variable valve timing mechanisms is located at a downstream side in the oil passage of the connection passage that conducts oil to the variable valve timing mechanism that has a smaller amount of oil leakage.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: November 9, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yoshiki Endo
  • Patent number: 11143062
    Abstract: A valve opening-closing timing control apparatus includes a phase adjustment mechanism. The phase adjustment mechanism includes an input gear and an elastic member that applies biasing force to the input gear in such a way that the input gear meshes with an output gear. An eccentric member includes one first concave portion along a circumferential direction thereof, being formed on an outer circumferential surface. The elastic member includes a supported portion supported by the first concave portion, and a curved portion and a biasing piece portion that generate biasing force. The elastic member is supported by the first concave portion at two different boundaries in the circumferential direction.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: October 12, 2021
    Assignee: AISIN CORPORATION
    Inventors: Hajime Sano, Tomoharu Otake, Hideomi Iyanaga
  • Patent number: 11131220
    Abstract: A camshaft adjuster (1) is provided, including a drive element (2) and a driven element (3), which can be rotated in relation to the drive element within an angular range and can be connected to a camshaft, wherein pressurizable working chambers (4) for rotating the drive element (2) with respect to the driven element (3) are formed between the drive element (2) and the driven element (3), wherein the camshaft adjuster (1) has a volume accumulator (5) for collecting hydraulic medium, wherein the volume accumulator (5) supplies the hydraulic medium to a vacuum-pressurized working chamber (4) via a check valve (6) in that the vacuum in the working chamber (4) opens the check valve (6), characterized in that the check valve (6) is arranged in an axial position between the working chamber (4) and the volume accumulator (5), and the volume accumulator (5) is formed by a cover element (7) connected to the drive element (2) for conjoint rotation.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: September 28, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Olaf Boese, Jochen Thielen
  • Patent number: 11131221
    Abstract: A central valve for a camshaft phaser includes a hollow cylindrical housing, a hydraulic unit, a control piston, a retaining ring, and a washer. The hollow cylindrical housing includes a first radial opening and a groove. The hydraulic unit is disposed in the hollow cylindrical housing and includes a second radial opening and a channel. The control piston is axially moveable in the hydraulic unit to adjust a flow of a hydraulic medium through the first radial opening, the second radial opening, and the channel. The retaining ring is disposed in the groove to retain the hydraulic unit and the control piston in the hollow cylindrical housing. The washer is disposed in the hollow cylindrical housing axially between the hydraulic unit and the retaining ring.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: September 28, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Steven Burke
  • Patent number: 11131232
    Abstract: A cooling system of an internal combustion engine includes a control valve that regulates the flow of a coolant in a circulation circuit, and an electronic control unit. The electronic control unit is configured to have the following functions: controlling the driving of a motor of the control valve; calculating a motor torque based on an effective voltage applied to the motor; calculating a valve body torque that is part of the motor torque, based on an angular acceleration rate of the motor; and calculating a driving stress based on a difference between the motor torque and the valve body torque.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: September 28, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yoshihiro Furuya
  • 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