Patents Examined by Zelalem Eshete
  • Patent number: 11118488
    Abstract: An actuating device for a camshaft timing apparatus, having a movable actuating member being supported displaceable along a translational axis, and a force generator for generating a force driving the actuating member along the translational axis, wherein the actuating member is supported rotatable about a rotational axis and wherein the actuating device comprises a torque generator for subjecting the actuating member to a torque about the rotational axis.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: September 14, 2021
    Assignee: Hella GmbH & Co. KGaA
    Inventor: Hagen Mueller
  • Patent number: 11118550
    Abstract: A roller tappet for a high-pressure fuel pump or for a valve drive of an internal combustion engine is provided. The tappet can be guided in a direction of a longitudinal axis thereof in a housing receptacle and can be driven displaceably by a cam shaft of the internal combustion engine. The tappet includes a tappet body which has a guide cylinder, and a cup-shaped sleeve supported axially and radially on the guide cylinder. The sleeve includes a bearing surface for the pump piston or a valve drive element, and the guide cylinder includes a rotatable roller mounted on support flanks, by means of which roller the roller tappet can be supported on the internal combustion engine camshaft. The sleeve has, at its end region facing away from the bearing surface, a ring-shaped shoulder for radial support and an end ring for axial support on the guide cylinder.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: September 14, 2021
    Inventors: Thomas Hu├čenether, Norbert Geyer
  • Patent number: 11111825
    Abstract: The present invention discloses a hydraulic valve mechanism with variable valve opening times and an internal combustion engine, which can effectively implement a single-opening working mode, a two-opening working mode or a multi-opening working mode of a valve in the same working cycle, and can implement a rapid and stable switchover among various working modes according to working condition requirements of the internal combustion engine. A main structure thereof includes a housing, a valve cam including a main protrusion and at least one auxiliary protrusion, a hydraulic rotary valve having a hydraulic switch valve function, a hydraulic drive component, a valve drive component, and the like. Oil passages of the hydraulic drive component, the hydraulic rotary valve, and the valve drive component are in communication.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: September 7, 2021
    Inventors: Zhaoyu Wang, Zongfa Xie, Kang Han
  • 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
    Inventors: Takuya Chikayama, Masayuki Yokoyama
  • Patent number: 11092043
    Abstract: A switchable cam lever that includes an inner lever and an outer lever is provided for a valve drive of an internal combustion engine. A transverse coupling serves for connecting the outer and inner lever to one another. A cam return spring is braced between the outer and inner lever. The return spring is installed upright, wherein the coupling runs directly above a support surface, and the return spring, as viewed in a lever longitudinal direction is guided in a receptacle in the inner lever. The receptacle is situated directly and entirely in front of the support surface and is formed as a bore, and the return spring bears at one end against a base or annular collar of the bore and acts at an opposite end against a crossbar which connects two arms of the outer lever at the top side.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: August 17, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Oliver Popp
  • Patent number: 11092042
    Abstract: A rocker arm assembly selectively opening first and second engine valves. The assembly includes a rocker arm and a valve bridge operably associated with the rocker arm and including a main body and a lever rotatably coupled to the main body. The main body is configured to engage the first engine valve, and the lever is configured to engage the second engine valve.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: August 17, 2021
    Assignee: Eaton Intelligent Power Limited
    Inventors: James E. McCarthy, Jr., Douglas J. Nielsen, Mark VanWingerden
  • Patent number: 11085340
    Abstract: The disclosure relates to a valve train of an internal combustion engine having variable-lift gas exchange valves, comprising: a carrier shaft, a cam piece arranged on the carrier shaft in a rotationally fixed and axially displaceable manner. The cam piece comprises a cam group of axially adjacent cams of different elevations, and an axial slotted link having axially opposite displacement grooves, each having a displacement region and an outlet region. Actuator pins, by engaging with the displacement grooves, displace the cam piece on the carrier shaft. Each displacement groove axially delimits, partially or completely, the outlet region by only one groove wall, and the one groove wall, at which the actuator pin, which is in engagement with the displacement region, positively accelerates the cam piece into a displacement direction. The width of the displacement grooves is smaller in the outlet region than a diameter of the actuator pins.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: August 10, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Arne Manteufel
  • Patent number: 11078814
    Abstract: A valve drive device has a camshaft which includes a shaft element and a cam piece which can be driven by the shaft element and a first cam effecting a first stroke of a valve and a second cam effecting a second stroke of the valve, and is displaceable in the axial direction of the camshaft relative to the shaft element between a first position, in which the valve can be actuated by the first cam, and a second position in which the valve can be actuated by the second cam, and has an electrically controllable actuator via which the cam piece is displaceable relative to the shaft element in the axial direction as a result of an electrical control of the actuator. The actuator pushes the cam piece alternately back and forth between the positions in the case of successive electrical controls occurring with the same polarity.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: August 3, 2021
    Assignee: Daimler AG
    Inventors: Thomas Stolk, Alexander Von Gaisberg-Helfenberg
  • Patent number: 11078811
    Abstract: An apparatus for actuating one or more latching arrangements of one or more respective rocker arms of a valve train assembly of an internal combustion engine, each rocker arm comprising a first body, a second body for pivotal motion with respect to the first body, and the latching arrangement, the latching arrangement latching and unlatching the first body and the second body, the includes: a shaft rotatable by an actuation source, from a rest orientation, in a first direction, and rotatable by the actuation source, from the rest orientation, in a second direction opposite the first direction; one or more selector cams rotatable by the shaft, each selector cam actuating the latching arrangement of a respective rocker arm so as to latch and/or unlatch the first body and the second body; and a return apparatus for returning the shaft to the rest orientation.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: August 3, 2021
    Inventor: Nicola Andrisani
  • Patent number: 11078962
    Abstract: A bearing assembly support comprises a body, the body defining: a thrust surface; an aperture extending through the body; and at least one passageway along which a lubricant can flow away from the thrust surface during use. The thrust surface is suitable for contacting an end of a bearing assembly. The aperture is suitable for receipt of a shaft when supported by the bearing assembly. Each passageway may be defined by a recess on the thrust surface or a cut away section that extends through the body from the thrust surface to an opposite surface of the body. The body may be a housing for receipt of a bearing assembly or an end cap for a housing.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: August 3, 2021
    Assignee: Cummins Ltd.
    Inventors: Philip Wild, Richard Goodyear, Christopher Normington
  • Patent number: 11066963
    Abstract: An internal combustion engine includes, as a lost motion spring that urges a rocker arm toward a cam, a compression coil spring supported on a cylinder head. A shaft is located on an inner side of the compression coil spring and extends along a winding axis of the compression coil spring. The internal combustion engine significantly reduces or prevents a decrease in the fuel efficiency and an increase in the size of the variable valve mechanism, while surging is unlikely to occur while running at a high speed, and it is possible to reduce the size or the weight of the rocker arm.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: July 20, 2021
    Inventor: Yasuo Okamoto
  • Patent number: 11053820
    Abstract: The disclosure relates to a hydraulic camshaft adjuster for the variable adjustment of the control times of gas exchange valves of an internal combustion engine, having a stator and a rotor rotatable relative to the stator. Radially inwardly projecting webs are formed on the stator and radially outwardly projecting vanes are formed on the rotor. Between the stator and the rotor are formed several hydraulic working chambers, each of which is divided into a first working chamber and a second working chamber by a vane of the rotor. Two locking elements are inserted into the rotor for the temporary, reversibly detachable fixing of the rotor relative to the stator in a middle position. The first locking element and the second locking element can be locked in a common locking slotted guide. The disclosure also relates to a method for locking of the rotor in such a hydraulic camshaft adjuster.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: July 6, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Michael Keck
  • Patent number: 11041413
    Abstract: A hybrid dual phaser assembly is disclosed for mounting to an engine camshaft to allow the timing of two sets of cam lobes to be phased independently of one another relative to a crankshaft of the engine. The phaser assembly comprises an electrically operated phaser having intermeshing gears for transmitting torque to the camshaft and a phase control input driven by an electric motor to be mounted coaxially with the camshaft, and a hydraulically operated phaser having vanes movable within arcuate cavities. The cavities of the hydraulically operated phaser are defined in part by an annular member that radially surrounds, and axially overlaps, a gear of the electrically operated phaser, which gear is separate from the annular member and forms radially inner boundary walls of the cavities.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: June 22, 2021
    Assignee: Mechadyne International Ltd.
    Inventors: Timothy Mark Lancefield, David Arthur Bedborough, Ian Methley
  • Patent number: 11035313
    Abstract: Systems and methods for determining operation of a cylinder deactivating/reactivating device are disclosed. In one example, a warm engine is rotated without being supplied fuel to determine the presence or absence of valve actuator degradation. Degraded valve actuators may be determined when there is a lack of a temperature rise in the engine exhaust system.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: June 15, 2021
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed Dudar
  • Patent number: 11028740
    Abstract: A lubricating oil supply structure includes: a shaft; a bearing supporting the shaft and having an oil supply port, through which lubricating oil is supplied to between the shaft and the bearing, and an oil introduction port, through which the lubricating oil is introduced; a first oil passage, connected to the oil supply port, distributing the lubricating oil from an oil pump toward the oil supply port; a second oil passage, connected to the oil introduction port, supplying the lubricating oil introduced through the oil introduction port to a supply destination; a connection oil passage, formed by a gap between the bearing and the shaft, connecting between the first oil passage and the second oil passage, and a throttle portion, formed on a part of the connection oil passage, suppressing a flow of the lubricating oil from the oil supply port toward the oil introduction port.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: June 8, 2021
    Inventor: Takashi Koyama
  • Patent number: 11022007
    Abstract: A camshaft for an engine and a method of assembling such a camshaft, wherein the camshaft has a base shaft and an external toothing which extends at least in certain portions axially along the base shaft A hub has an internal toothing which correlates with the external toothing of the base shaft such that the hub is connected rotationally conjointly and axially non-displaceably to the base shaft. The external toothing has at least one form-fit subregion, which extends axially at least in certain portions along the base shaft, or one force-fit subregion in order for the hub to be arranged at least in a form-fitting or force-fitting manner, and wherein at least the form-fit subregion or the force-fit subregion is adjoined by at least one alignment region which extends at least in certain portions axially along the base shaft and which serves for the angular alignment of the hub.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: June 1, 2021
    Inventor: Volker Junge
  • Patent number: 11015492
    Abstract: A method of operating a rocker arm assembly in a cylinder deactivation mode according to one example of the present disclosure includes providing a two-step variable valve lift rocker arm assembly and a deactivating lash adjuster. Operation of the rocker arm assembly in cylinder deactivation mode is selected. The rocker arm assembly is operated in low-lift mode based on the selection of the cylinder deactivation mode. Subsequent to or concurrently with operating the rocker arm assembly in the low-lit mode, the deactivating lash adjuster is operated in the unlatched mode. A first amount of the total lost motion required for cylinder deactivation mode is accounted for by lost motion of the rocker arm assembly operating in the low-lift mode and a remainder amount of the total lost motion is accounted for by lost motion of the deactivating lash adjuster operating in the unlatched mode.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: May 25, 2021
    Assignee: Eaton Intelligent Power Limited
    Inventor: Dale Arden Stretch
  • Patent number: 11008968
    Abstract: Methods and systems are provided for diagnosing a cylinder valve deactivation mechanism in an engine system having cam-actuated valves. Movement of a latch pin of the deactivation mechanism is inferred from an induction current generated by a solenoid coupled to the latch pin, and the inferred movement is used to diagnose operation of cylinder valve deactivation mechanism. The inferred movement and a profile of the induction current is also used to estimate camshaft and crankshaft timing for improved cylinder fuel delivery in the absence of a camshaft sensor.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: May 18, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Ulrey, Russell Senior, Gregory McConville, Amey Karnik
  • 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
    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