Patents Examined by Zelalem Eshete
  • Patent number: 10436079
    Abstract: A variable valve drive for a lifting valve, such as a charge-exchange valve of an internal combustion engine, that is periodically movable between closed and open positions indirectly by way of a cam via a rocker lever. The variable valve drive includes a switchable rocker lever arrangement for the actuation of the lifting valve, having a transmission rocker lever and a valve rocker lever which are mounted pivotably on different rocker lever axles parallel to the camshaft axis. The valve rocker lever, is in operative contact with the lifting valve at a first end, and has a roller, at a second end. The transmission rocker lever, is in engagement with a cam of the camshaft and, is operatively connected to the roller of the valve rocker lever.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: October 8, 2019
    Assignee: MAN TRUCK & BUS AG
    Inventor: Hai-Son Pham
  • Patent number: 10422254
    Abstract: A variable valve timing control device includes a drive-side rotational body, a driven-side rotational body, a connecting bolt being coaxially disposed with a rotary axis and connecting the driven-side rotational body to a camshaft, a valve unit including a spool being disposed at an inner space of the connecting bolt and supplying and discharging a fluid to and from an advanced-angle chamber and a retarded-angle chamber, the valve unit discharging the fluid from an opening of a head portion of the connection bolt when the spool controls the fluid, and a reservoir being coaxially disposed with the rotary axis that is positioned laterally, the reservoir accumulating the fluid discharged from the opening of the head portion from which the fluid is configured to be sucked.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: September 24, 2019
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takeo Asahi, Yuji Noguchi, Tomohiro Kajita
  • Patent number: 10415439
    Abstract: A system includes a rocker arm assembly for operative engagement with a first and second cam. The assembly includes a first arm for operatively engaging the first cam for a first desired lift profile, a second arm for operatively engaging the second cam for a second desired lift profile, where the second arm includes a latch to engage the second arm with the first arm. The latch is responsive to supplied oil pressure and release oil pressure to switch between lift profiles. The system includes the latch coupled to the supplied or released oil pressure to engage the arms before the first and second arms are engaged with the base circle portion of each of the respective first and second cams.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: September 17, 2019
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Andrei Dan Radulescu, Austin Robert Zurface, James R. Sheren, Anthony L. Spoor, Luigi Lia, Philip Michael Kline
  • Patent number: 10408096
    Abstract: An engine variable camshaft timing phaser (10) includes a sprocket (12), three ring gears (26, 28, 30), multiple planet gears (24), and a sun gear (22). The sprocket (12) receives rotational drive input from an engine crankshaft. One or more of the three ring gear(s) (26, 28, 30) receives rotational drive input from the sprocket (12) and rotates with the sprocket (12), and the remaining ring gear(s) (26, 28, 30) transmit rotational drive output to an engine camshaft (62). All three of the ring gears (26, 28, 30) engage with the planet gears (24). And the sun gear (22) also engages with the planet gears (24). In operation, relative rotational speeds between the sprocket (12) and the sun gear (22) causes the engine camshaft (62) to advance or retard engine valve opening and closing.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: September 10, 2019
    Assignee: BorgWarner Inc.
    Inventors: Christopher J. Pluta, Michael W. Marsh
  • Patent number: 10385740
    Abstract: An electrically-actuatable camshaft adjuster includes an adjustment gear which has a drive wheel with an external toothing. The adjustment gear also has an additional ring-shaped component which is solidly screwed to the drive wheel. In particular, the drive wheel has internal threading into which outer threading of the ring-shaped component is screwed.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: August 20, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Resat Aras, Juergen Weber
  • Patent number: 10371018
    Abstract: A method, control system, and variable valve timing system are provided for controlling an actuator that can be switched into an on state and an off state with pulse width modulation. The systems and method include controls configured to determine an actual system parameter on a first time schedule and a desired system parameter on a second time schedule. On a third time schedule, a position error difference between the actual system parameter and the desired system parameter is determined. The third time schedule is configured to begin and to determine the position error difference each time that the actual system parameter is determined and each time that the desired system parameter is determined. A desired duty cycle is determined, and a duty cycle command is sent to a pulse width modulation output unit.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: August 6, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Klaus Pochner, Uwe Steinmann, Kea Hyuk Chang, Scott T Feldmann, Jon C Wasberg
  • Patent number: 10371024
    Abstract: A valve assembly selectively varies the timing of the valves in an internal combustion engine cycle by way of a first and second camshaft. Each valve has a shuttle portion and a valve portion. Upper and lower cam followers on the shuttle portion engage with first and second cams on each of the first and second camshafts to move the valve between an open and closed position with reference to a valve seat on an engine block.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: August 6, 2019
    Assignee: 2575168 ONTARIO INC.
    Inventor: John David Jeffery
  • Patent number: 10352253
    Abstract: A method of transitioning between two intake valve lift states while providing constant engine torque output comprehends the steps of receiving a lift change request from an engine control device, determining the current phase angles of the camshafts, and determining whether the intake and exhaust camshafts are at transition positions. The transition positions are experimentally or empirically determined combinations of operating conditions that result in constant engine torque output before and after the intake valve lift transition. If they are, an appropriate, i.e., low to high or high to low cam lift state transition of the intake valves occurs. If they are not, the cam phasers move the intake and exhaust camshafts to transition positions. When the cam phasers have moved the intake and exhaust camshafts to the transition positions, i.e., positions of constant engine torque output, the intake valve lift transitions from high to low or low to high.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: July 16, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Christopher E. Whitney, David N. Hayden
  • Patent number: 10352201
    Abstract: A valve mechanism for an engine includes a camshaft, a rocker arm, a synchronization cam that rotates in synchronism with a valve driving cam, and a switch assembly that switches the driving state of an intake valve or an exhaust valve when a cam follower is pressed by the synchronization cam. The synchronization cam presses the cam follower at a time when the intake valve or the exhaust valve is closed. The switch assembly includes a switch unit that switches the driving state when a switch moves, a driver that drives the switch via a transmission, and a positioner including a spring-biased presser that engages with a concave portion of the transmission. The concave portion includes a first concave portion with which the presser engages in a first driving state, and a second concave portion with which the presser engages in a second driving state.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: July 16, 2019
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Yasuo Okamoto
  • Patent number: 10344630
    Abstract: A variable valve control system may include a variable valve mechanism having latching pins for performing variable valve lift by a pressure difference of oil, an oil control circuit block having a low-pressure oil line and a high-pressure oil line to control ON/OFF of the latching pins, and a rotation shaft valve having oil passages for switching the low-pressure oil line and the high-pressure oil line.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: July 9, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Myung-Sik Choi, Young-Hong Kwak
  • Patent number: 10344635
    Abstract: Provided is a hydraulic pressure control valve capable of exhibiting a filter detent function without degrading the assemblability of filters to a valve body. A hydraulic pressure control valve according to the present invention includes a valve body having a plurality of opening portions formed in a cylindrical peripheral wall, annular grooves, and a restraining portion provided in each of the annular grooves, a spool valve, and filters wound to cover the opening portions, respectively, and each having a mesh portion for filtering hydraulic fluid and a mask portion covering the restraining portion.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: July 9, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Shoki Sakaguchi
  • Patent number: 10344631
    Abstract: Systems and methods for varying a rotational relationship between a cam shaft and a crank shaft on an internal combustion engine (i.e., cam phasing) are provided. In particular, systems and methods are provided that facilitates a rotary position of a first component to be accurately controlled with a mechanism causing a second component, which can be coupled to the cam shaft or crank shaft, to follow the rotary position of the first component.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: July 9, 2019
    Assignee: HUSCO Automotive Holdings LLC
    Inventors: Austin Schmitt, Brian Heidemann, Dean Wardle, Allen Tewes, Michael Kujak
  • Patent number: 10337358
    Abstract: A valve timing control apparatus for an internal combustion engine includes: a drive rotation member; a housing; a vane rotor; and a front plate, the drive rotation member including a positioning mechanism including a guide portion which is formed on an inner circumference surface of the cylindrical wall, and which has an inclined shape whose an inside diameter is decreased from the one axial end side to the other axial end side, a mounting protrusion portion which is formed on the other end side of the guide portion, and on which an outer circumference surface of the housing is mounted to be positioned.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: July 2, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Kotaro Watanabe
  • Patent number: 10337361
    Abstract: Methods and systems are described for an engine with a cam torque actuated variable cam timing phaser. Phaser positioning control is improved by reducing inaccuracies resulting from inadvertent spool valve and/or phaser movement when the spool valve is commanded between regions. In addition, improved spool valve mapping is used to render phaser commands more consistent and robust.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: July 2, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: John Eric Rollinger, Paul A. Pietrzyk, Edward Badillo
  • Patent number: 10337360
    Abstract: A method for setting lash on a switching rocker arm assembly includes providing a rocker arm having (i) an outer arm having a first outer side arm and a second outer side arm, the outer arm defining an opening, (ii) an inner arm disposed between the first and second outer side arms, (iii) a roller follower that selectively engages a cam, the roller follower mounted about a bearing axle that extends through the opening. A zero lash shim is inserted into a gap defined between the bearing axle and the outer arm at the opening. The rocker arm is installed into the valvetrain with the master tip cap. Lash is measured between the cam and the roller follower. The rocker arm and the master tip cap is removed. A select fit valve tip cap is installed based on the master tip cap and the measured lash.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: July 2, 2019
    Assignee: Eaton Corporation
    Inventor: Austin Zurface
  • Patent number: 10337364
    Abstract: A variable valve timing device applied to an engine system may include a rotor supplied with oil and rotated in clockwise and counterclockwise directions, one-way clutches coupled to the rotor to limit an amount of rotation of the rotor, a sprocket having a rotor hole surrounding an external diameter portion of the rotor, a rotation shaft fitted into a shaft hole of the rotor for the supply of oil to oil grooves, and a shaft fixing member coupled to the rotation shaft to fix the rotor and the rotation shaft, wherein the one-way clutches restrict clockwise/counterclockwise rotation of the rotor by torque of a camshaft, achieving an improvement in fuel efficiency/emission material (EM) of an engine.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: July 2, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Won-Gyu Kim
  • Patent number: 10337365
    Abstract: A control shaft of a cam shaft adjustment unit has axially spaced adjustment cams, which are designed in a first axial section of the control shaft for a continuous operation of a cylinder and in a second axial section for a cylinder shut-off. The adjustment cams for the continuous operation of a cylinder have, over the entire circumference of the cam circle, a radial extension which is greater than a zero stroke extension and the adjustment cams for the cylinder shut-off have, around their circumference, a shut-off section of the cam circle with a radial extension which is less than or equal to the zero stroke extension. The control shaft has a stop that reduces the rotation in both circumferential directions and functions as the calibration point for an engine electronics system.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: July 2, 2019
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Sebastian Sperrhacke, Ferdinand Weidinger, Alexander Hiereth, Timo Klees
  • Patent number: 10337440
    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: February 14, 2018
    Date of Patent: July 2, 2019
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed Dudar
  • Patent number: 10329963
    Abstract: A valve train for an internal combustion engine may include a camshaft and a cam follower. The valve train may also include two first cams arranged on the camshaft in a torque-proof manner and at an axial distance from one another. Each of the two first cams may include an identical first cam contour. The valve train may also include two second cams arranged on the camshaft in a torque-proof manner and at an axial distance from one another. Each of the two second cams may also include an identical second cam contour. The two first cams and the two second cams may alternate in an axial direction on the camshaft. The cam follower may be axially adjustable between a first and second position, and may be drivingly connected to the two first cams in the first position and drivingly connected to the two second cams in the second position.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: June 25, 2019
    Assignee: Mahle International GmbH
    Inventor: Patrick Altherr
  • Patent number: 10329964
    Abstract: A number of variations may include a product comprising a latching solenoid comprising: a valve; a spring operatively connected to the valve; a base plate adjacent the valve, wherein the base plate is constructed and arranged to maintain residual magnetism; an armature adjacent the base 10 plate and operatively connected to the spring; a pin disposed within the armature and operatively connected to the valve; wherein the latching solenoid includes a coil, wherein when the latching solenoid is energized the coil pulls the armature in a first direction toward the base plate; and wherein when the latching solenoid is energized the base plate becomes residually 15 magnetized so that when the armature moves in the first direction toward the base plate the armature magnetically latches to the base plate and remains attached to the base plate when the latching solenoid is de-energized.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: June 25, 2019
    Assignee: BorgWarner Inc.
    Inventors: Philip J. Mott, Christopher P. Thomas