Camshaft Or Cam Characteristics Patents (Class 123/90.17)
  • 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
  • Patent number: 10720810
    Abstract: A positioning actuator includes a stator assembly and a rotor, a printed circuit provided with electronic components, as well as a reduction gear for driving a rotary member. It includes two complementary blocks, the first block being made up of a shell having thermal conductivity no lower than 1 W/m/K, the first block including the reduction gear and having a passage for the output shaft of the reducing gear as well as an open opposing surface; the second block being formed by overmoulding the stator assembly and having a rear bearing recess for the rotor, the second block having a joining surface which complements a joining surface of the first block. The actuator also includes the electronic circuit which is positioned in a space defined between the first and second blocks. The disclosure also relates to a method for manufacturing such an actuator.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: July 21, 2020
    Assignee: MMT SA
    Inventors: Daniel Sigg, Philip Graf
  • Patent number: 10711662
    Abstract: A system for supplying hydraulic fluid in an internal combustion engine comprises a pumping assembly disposed within a housing and a hydraulic circuit, operatively connected to the pumping assembly, also disposed within the housing, which housing may be fixed or dynamic. A source of pumping motions is operatively connected to the pumping assembly, which source of pumping motions may comprise a valve actuation motion source or a component of a valve train between the valve actuation motion source and an engine valve. Pumping motions applied to the pumping assembly by the source of pumping motions causes hydraulic fluid received from a supply pressure hydraulic fluid input of the hydraulic circuit to be transmitted to an increased pressure hydraulic fluid output of the hydraulic circuit.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: July 14, 2020
    Assignee: JACOBS VEHICLE SYSTEMS, INC.
    Inventors: Justin Baltrucki, Scott Nelson, G. Michael Gron, Jr.
  • Patent number: 10711658
    Abstract: A camshaft phaser or camshaft adjuster for an internal combustion engine is disclosed. The camshaft adjuster includes a rotor, and a stator disposed about the rotor in a slideable engagement such that the stator and the rotor are rotatable relative to each other. A trigger wheel is configured to interact with an associated sensor for detection of an angular speed or position of the trigger wheel. A drive plate is configured to be non-rotatably fixed with an inner camshaft and rotatably coupled to the trigger wheel. In various embodiments, the trigger wheel has an axial face that defines an opening, and the drive plate has a tab with an axially-extending portion extending through the opening in the trigger wheel.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: July 14, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Shannon Bell, Gilson Arima
  • Patent number: 10704430
    Abstract: A phase setter for adjusting the rotational angular position of a cam shaft relative to a crankshaft of an internal combustion engine. The phase setter includes a stator; a rotor which together with the stator forms a first and second pressure chambers; a control valve featuring a pressure port, and first and second working ports; a feed for the inflow of pressure fluid to the pressure port, a first connecting channel connecting the first pressure chamber to the first working port, and a second connecting channel connecting the second pressure chamber to the second working port; and a reflux valve device acts in the feed and includes a valve structure extending annularly around the rotational axis and has one or more spring tongues or can be axially moved to restrict backflow of pressure fluid through the feed more significantly than the inflow of pressure fluid to the pressure port.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: July 7, 2020
    Assignee: Schwäbische Hüttenwerke Automotive GmbH
    Inventors: Jürgen Bohner, Uwe Meinig
  • Patent number: 10697418
    Abstract: Provided is a hybrid vehicle that includes a power train including an internal combustion engine equipped with a plurality of cylinders and a drive motor unit. The drive motor unit includes an electric motor coupled to the internal combustion engine without a clutch. The internal combustion engine includes one or more decompression devices that are each installed for a subset of one or more cylinders and that operate to release compression pressure in the subset of one or more cylinders in at least one of the course of an engine stop and course of an engine start-up in which combustion is not performed. The subset of one or more cylinders are selected such that, when the one or more decompression devices are operating, compression is not produced sequentially in cylinders that are adjacent to each other in terms of the firing order.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: June 30, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shigeki Miyashita
  • Patent number: 10697333
    Abstract: A camshaft phaser assembly, including: an axis of rotation; a first hydraulic camshaft phaser including a stator arranged to receive rotational torque and including a plurality of radially inwardly extending protrusions, a rotor including a plurality of radially outwardly extending protrusions circumferentially interleaved with the plurality of radially inwardly extending protrusions, and a plurality of phaser chambers, each phaser chamber circumferentially bounded by a respective radially inwardly extending protrusion included in the plurality of radially inwardly extending protrusions and a respective radially outwardly extending protrusion included in the plurality of radially outwardly extending protrusions; a second hydraulic camshaft phaser; a cap; and a fluid chamber bounded in part by the cap and in fluid communication with a phaser chamber included in the plurality of phaser chambers; and a bolt arranged to non-rotatably connect the rotor and the cap to a camshaft.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: June 30, 2020
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Michael Kandolf
  • Patent number: 10690018
    Abstract: A camshaft phaser assembly is disclosed. A trigger wheel is provided that includes a position indicator and a first toothing. An input gear includes a second toothing. An output gear is adapted to drive a camshaft, and defines a third toothing. The first toothing and the third toothing have an identical profile. A connection assembly includes a fourth toothing engaged with the first toothing, the second toothing, and the third toothing, such that an input provided by the input gear is transmitted to both the output gear and the trigger wheel, and the trigger wheel and the output gear are driven in unison. A method of detecting a position of a camshaft based on a trigger wheel is also disclosed.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: June 23, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Steven Burke
  • Patent number: 10690019
    Abstract: Using existing phaser control valve and a solenoid to create a pumping chamber which provides enough oil pressure to disengage a locking pin at all conditions.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: June 23, 2020
    Assignee: BorgWarner Inc.
    Inventors: Braman Wing, Mark M. Wigsten, Chad McCloy, Chris Pluta, Jonas Adler, Jason Moss, Keith Feldt
  • Patent number: 10683779
    Abstract: A valve train for a reciprocating piston internal combustion engine may include a crankshaft, at least one inlet valve, at least one outlet valve, at least one camshaft coupled rotationally to the crankshaft, at least one inlet cam held on a first camshaft, at least one outlet cam held on one of the first camshaft or a second camshaft, at least one brake cam held on one of the first camshaft or the second camshaft, at least one inlet cam follower, which may actuate the at least one inlet valve and may be drive-connected at least at times to the inlet cam, at least one outlet cam follower, which may actuate the at least one outlet valve, may be drive-connected at least at times to the outlet cam, and, in a braking mode, may be drive-connected at least at times to the brake cam, and a phase shifting device for adjusting a phase position of the brake cam relative to the crankshaft.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: June 16, 2020
    Assignee: Mahle International GmbH
    Inventors: Patrick Altherr, Christoph Beerens, Thomas Flender, Herrn Rolf Kirschner, Sascha Naujoks
  • Patent number: 10683782
    Abstract: A two-stroke, opposed-piston engine includes a cylinder with an inlet piston controlled inlet port and an exhaust piston controlled exhaust port, the cylinder defining a combustion chamber with the inlet piston and the exhaust piston, a charge air channel in flow communication with the inlet port, a conduit extending directly from the combustion chamber to the charge air channel, and a valve arranged to selectively open and close flow communication through the conduit.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: June 16, 2020
    Assignee: Volvo Truck Corporation
    Inventor: Stephen Geyer
  • Patent number: 10677107
    Abstract: Roller forming portions of the VCT phaser to join the sprocket housing of the phaser to the end plates provides a reduction in oil leakage from the phaser as well as less distortion of the end plates of the phaser. Furthermore, by roller forming the sprocket housing of the VCT phaser to secure the end plates to the sprocket housing, the total number of parts needed is reduced, and the total number of holes needed to be drilled is reduced, reducing the overall cost of the phaser.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: June 9, 2020
    Assignee: BorgWarner Inc.
    Inventors: Shawn J Blackmur, Chad McCloy
  • Patent number: 10662827
    Abstract: A center bolt oil control valve including a valve housing, a piston within the valve housing, and a calibration cap having at least a pressure check valve and filter. The calibration cap is located within the valve housing and is extending out an end of the valve housing. A supply pressure port may be placed in the valve housing, wherein the supply pressure port supplies a hydraulic fluid to ports in the valve housing depending on a position of the piston. The valve housing includes a threaded portion and is fastened to a cam nose with the threaded portion, wherein a supply pressure port of the cam nose is adjacent the threaded portion. This valve provides improved design flexibility, especially for axial constrained applications.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: May 26, 2020
    Assignee: ECO Holding 1 GmbH
    Inventor: Daniel Stanhope
  • Patent number: 10655509
    Abstract: A variable valve timing control device includes a connection mechanism provided with a coupling member which connects a driving-side rotation member and an input gear with each other, the connection mechanism including a first engagement portion and a second engagement portion, the first engagement portion engaged with the driving-side rotation member so as to be relatively displaceable therewith in a first radial direction, the second engagement portion engaged with the input gear so as to be relatively displaceable therewith in a second radial direction which is orthogonal to the first radial direction, and a biasing member restricting a coupling member from being displaced.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: May 19, 2020
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventor: Hiroki Mukaide
  • Patent number: 10656688
    Abstract: Thermal management systems and corresponding use methods are described herein. A thermal management system includes components of a computing device. The computing device includes a housing. The housing includes an outer surface and an inner surface. The computing device also includes a heat generating component supported by the housing. The computing device includes a phase change device adjacent or physically connected to the heat generating component. The phase change device includes a first side and a second side. The first side is closer to the heat generating component than the second side. The second side is opposite the first side. The phase change device is compressible, such that when a force is applied to the outer surface of the housing, the inner surface of the housing flexes towards the second side of the phase change device and the phase change device is compressed.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: May 19, 2020
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: David William Voth, Andrew Douglas Delano
  • Patent number: 10655508
    Abstract: A variable camshaft timing system for an internal combustion engine with an idler shaft mounted camshaft phaser is provided. The camshaft phaser includes a driven wheel that is driven by the crankshaft, a driving wheel that drives the camshaft, and a hydraulically driven phasing assembly therebetween. A valve body is connected to the idler shaft for directing the flow of pressurized hydraulic medium to the camshaft phaser. The valve body includes a center part with an integral retainer for holding the camshaft phaser on the idler shaft, and a radial extension integrally connected to the center part that extends radially outwardly from an axis of the idler shaft a predefined distance. A control valve receiving part is integrally connected to radial extension and includes a control valve bore. A control valve is located in the control valve bore in the valve body. The control valve extends through the engine cover at a desired location for control valve maintenance.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: May 19, 2020
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Dipan Patel
  • Patent number: 10641139
    Abstract: A camshaft adjuster, comprising a drive element and an output element, wherein the drive element can be rotated in relation to the output element within an angular range between an early and a late position. The camshaft adjuster also includes a spring configured to brace the drive element with the output element, wherein the spring is configured to rotate the drive element in relation to the output element into a desired position within the angular range and is further configured to angularly adjust from both an early position and a late position into a direction of the desired position.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: May 5, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Ali Bayrakdar
  • Patent number: 10634066
    Abstract: A method for controlling intake and exhaust valves of an engine includes: controlling, by an intake continuous variable valve timing (CVVT) device, opening and closing timings of the intake valve; controlling, by an exhaust CVVT device, opening and closing timing of the exhaust valve; determining, by a controller, a target opening duration of the intake valve and target opening or target closing timings of the intake valve based on an engine load and an engine speed; modifying, by an intake continuous variable valve duration (CVVD) device, current opening and closing timings of the intake valve based on the target opening duration; and advancing or retarding, by the intake CVVD device, the current opening timing of the intake valve while simultaneously retarding or advancing the current closing timing of the intake valve by a predetermined value based on the target opening duration of the intake valve.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: April 28, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: In Sang Ryu, Kyoung Pyo Ha, You Sang Son, Kiyoung Kwon
  • Patent number: 10634017
    Abstract: A variable valve timing control device includes a phase detecting portion; a phase control portion driving an electromagnetic solenoid while obtaining a detection signal detected by the phase detecting portion to set a spool to one of a phase control region and a lock region; and a boundary memory portion memorizing a boundary electric current value for referring a boundary between the phase control region and the lock region when the phase control portion operates a phase control; and a characteristic calculation portion obtaining the boundary electric current value by calculation, the boundary electric current value supporting the boundary between the phase control region and the lock region based on solenoid characteristic information of the electromagnetic solenoid and valve characteristic information of an electromagnetic control valve, the characteristic calculation portion memorizing the boundary electric current value to the boundary memory portion.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: April 28, 2020
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroyuki Amano, Shigehiro Tanabe, Takashi Iwaya, Yuji Noguchi
  • Patent number: 10626759
    Abstract: A variable camshaft timing assembly that comprises a hub including at least one vane extending radially-outwardly away from a center axis; an elongated camshaft sleeve, configured to be received at least partially by an inner cavity of a camshaft, having a substantially annular outer surface including a distal bearing section, an end bearing section, and a hub section: the distal bearing section configured to be positioned radially-inwardly from and concentric with a distal bearing of the camshaft and to provide support to the distal bearing; the end bearing section, axially spaced from the distal bearing section, configured to be positioned radially-inwardly from and concentric with an end bearing of the camshaft and to provide support to the end bearing; and the hub section, configured to engage the hub, located axially between the distal bearing section and the end bearing section.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: April 21, 2020
    Assignee: BorgWarner, Inc.
    Inventor: John R. Smerczak
  • Patent number: 10626760
    Abstract: A valve opening/closing timing control device includes: a driving side rotator synchronously rotating with a crankshaft of an internal combustion engine; a driven side rotator coaxially disposed with a rotation axis of the driving side rotator and integrally rotating with a valve opening/closing camshaft; advance and retard chambers formed between the driving side and driven side rotators; a lock mechanism including a lock member capable of engaging with a recessed portion on one of the driving side and driven side rotators and provided in the other of the driving side and driven side rotators; and a connecting bolt coaxially disposed with the rotation axis and connecting the driven side rotator to the camshaft. The connecting bolt includes an internal space, and an advance port, a retard port and a lock port are formed as through-holes, a valve unit accommodates a spool, and the spool includes an internal flow path.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: April 21, 2020
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yoshiaki Yamakawa, Masaki Kobayashi, Yusuke Hisaeda
  • Patent number: 10619578
    Abstract: Provided is an actuator for a link mechanism for an internal combustion engine, which is capable of enhancing the durability of a wave gear type speed reducer or a bearing portion. The actuator for a link mechanism for an internal combustion engine according to the present invention includes: a housing including a bearing portion configured to support a control shaft so that the control shaft is rotatable; and the wave gear type speed reducer configured to reduce a rotation speed of an output shaft connected to a drive motor, and to transmit the reduced rotation speed to the control shaft. A restricting mechanism is provided to one of the control shaft and the housing, and is configured to restrict movement of the control shaft toward the wave gear type speed reducer side in an axial direction by being brought into contact with another of the control shaft and the housing.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: April 14, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Kishiro Nagai, Yoshihiro Suda, Junichiro Onigata
  • Patent number: 10619523
    Abstract: This exhaust cam shaft (2) is provided with a shaft part (5) and cam parts (6 to 13) provided on the outer circumference of the shaft part (5). The shaft part (5) has holes (16, 17, 19) opened at predetermined positions on the outer circumferential surface of the shaft part (5). The holes (16, 17, 19) are formed so as to be gradually tapered from an outside of the shaft part (5) toward a center of the shaft part (5) in a radial direction.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: April 14, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Youji Asakura, Hideo Tone, Akira Asai, Michihiro Kanamura, Shoichi Furuya
  • Patent number: 10619588
    Abstract: A controller for an internal combustion engine includes: a failure determination section which determines a failure state in a case where a relative rotation phase of an intake side valve opening and closing timing control mechanism does not change when controlling the mechanism after starting the driving of a starter motor and trying to change the relative rotation phase of the mechanism in a start control for starting an internal combustion engine. When the section determines a failure, the controller performs at least one of an intake air amount increase control in which an opening degree of a throttle valve is increased, an ignition timing advance angle control in which injection of fuel is performed at a timing earlier than a set timing and ignition is performed, and a multi-injection control in which the fuel is injected immediately before the ignition in addition to the fuel injection in an intake stroke.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: April 14, 2020
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Seiichi Fujimoto, Hirokazu Tanaka, Masaaki Kaneko, Tomohiro Kozaki, Suguru Kamiya, Atsushi Hanaura
  • Patent number: 10584617
    Abstract: A camshaft adjuster (1) is provided for an internal combustion engine of the vane cell type, having a stator (2) and a rotor (3) which can be rotated relative to the stator (2) and consists of a plurality of rotor parts (4, 5, 6) which are connected to one another, wherein the rotor (3) can be connected fixedly to a camshaft (7) of the internal combustion engine so as to rotate with it, and a first rotor part (4) is configured in such a way that the camshaft (7) is supported with contact on the first rotor part (4) in an operating state, wherein the first rotor part (4) is produced by a sintering process, and at least one first supporting surface (9), supporting the camshaft (7), of the first rotor part (4) is set geometrically by a chipless machining operation, and to a method for producing a rotor (3) for a camshaft adjuster (1) of this type.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: March 10, 2020
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Juergen Weber
  • Patent number: 10570785
    Abstract: A hydrostatic camshaft phaser system includes a hydraulically-actuated camshaft phaser with a rotor; and a stator housing that receives the rotor and includes an advancing chamber and a retarding chamber defined at least partially by the vane; and a variable displacement pump, in fluid communication with the hydraulically-actuated camshaft phaser, comprising a first chamber in fluid communication with the advancing chamber and a second chamber in fluid communication with the retarding chamber; the first chamber receives fluid from a first non-continuous groove extending along a camshaft surface or a bearing surface and the second chamber receives fluid from a second non-continuous groove extending along the camshaft surface or the bearing surface during a first portion of camshaft rotation, and the first chamber receives fluid from the second non-continuous groove and the second chamber receives fluid from the first non-continuous groove during a second portion of camshaft rotation.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: February 25, 2020
    Assignee: BORGWARNER, INC.
    Inventors: Chad McCLoy, Douglas W. Perry, Matthew N. Sherman
  • Patent number: 10563547
    Abstract: A camshaft phaser, including an axis of rotation; a target wheel including a first tab and a first timing feature; a stator arranged to receive rotational torque and including a plurality of radially inwardly extending protrusions; a rotor; and a spring. The rotor includes: a second timing feature; and, a plurality of radially outwardly extending protrusions circumferentially interleaved with the plurality of radially inwardly extending protrusions. The spring urges: the target wheel in a first circumferential direction with respect to the rotor; and the first timing feature into contact with the second timing feature. The first tab axially positions the target wheel within the camshaft phaser. The target wheel is arranged to interface with a position sensor to identify a rotational position of the rotor.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: February 18, 2020
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Alexandre Camilo, Renato de Oliveira Ghiraldi
  • Patent number: 10557385
    Abstract: An engine variable camshaft timing phaser (10) includes a sprocket (12) and a planetary gear assembly (14). The sprocket (12) receives rotational drive input from an engine crankshaft. The planetary gear assembly (14) includes two or more ring gears (26, 28), multiple planet gears (24), a sun gear (22), and a wrap spring (76). One of the ring gears (26, 28) receives rotational drive input from the sprocket (12) and one of the ring gears (26, 28) transmits rotational drive output to an engine camshaft. The sun gear (22) engages with the planet gears (24). The wrap spring (76) experiences expansion and contraction exertions to permit advancing and retarding engine valve opening and closing, and to prevent advancing and retarding engine valve opening and closing.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: February 11, 2020
    Assignee: BorgWarner Inc.
    Inventors: Larry A. Pritchard, Thomas R. Benner, Christopher J. Pluta
  • Patent number: 10557383
    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 a helix rod during cam torque pulses.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: February 11, 2020
    Assignee: HUSCO Automotive Holdings LLC
    Inventors: Austin Schmitt, Allen Tewes, Michael Kujak, Brian Heidemann
  • Patent number: 10557386
    Abstract: A joint includes a rotation transmitting portion and a stopper portion. The rotation transmitting portion abuts on a relative rotating portion in a circumferential direction. The stopper portion is capable of abutting on the relative rotating portion to restrict an axial position of the relative rotating portion. The stopper portion of the joint which rotates at the same speed as the relative rotating portion restricts an axial position of the relative rotating portion, whereby a sliding movement does not occur between the relative rotating portion and the stopper portion. It can be restricted that a power transmission efficiency is decreased and an abrasive wear is generated.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: February 11, 2020
    Assignee: DENSO CORPORATION
    Inventors: Kazuaki Nemoto, Hiroshi Okada
  • Patent number: 10550734
    Abstract: A camshaft phaser for the adjusting valve timing of a combustion engine includes a stator and a rotor that can rotate relative to the stator. The rotor is connected to one end of the camshaft via an adapter as well as via a sprocket which is fixedly mounted to the stator. The sprocket is slideably mounted about the camshaft with a first guiding section and is slideably mounted about the adapter with a second guiding section.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: February 4, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Juergen Weber, Christian Boesel, Jochen Thielen
  • Patent number: 10550738
    Abstract: A continuously variable valve duration apparatus may include: a camshaft; a cam unit on which a cam is formed, and the camshaft inserted to the cam; an inner wheel for transmitting rotation of the camshaft to the cam unit; a wheel housing into which the inner wheel is rotatably inserted and movable perpendicular to the camshaft; a guide shaft on which a guide screw thread is formed and disposed perpendicular to the camshaft; a worm wheel formed with an inner screw thread for engaging with the guide screw thread, and the worm wheel disposed within the wheel housing; and a control shaft on which a control worm for engaging with the worm wheel is formed.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: February 4, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: You Sang Son, Ingee Suh, Kiyoung Kwon, In Sang Ryu, Kyoung Pyo Ha, Dongheon Park, Wootae Kim, Back Sik Kim, Seung Jae Lee
  • Patent number: 10550772
    Abstract: A camshaft assembly for an internal combustion engine of a vehicle and method of operating the camshaft assembly to enhance engine braking performance through selective activation of a cam lobe having a brake gas recirculation contour. The camshaft assembly comprises an exhaust camshaft and a lobe pack on the exhaust camshaft, with the lobe pack including a plurality of cam lobes. At least one cam lobe of the plurality of cam lobes includes a brake gas recirculation cam contour having an exhaust stroke projection and a combustion stroke projection. The method switches to the cam lobe including the brake gas recirculation profile when certain criteria indicate that an engine braking mode is to be activated.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: February 4, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Maqsood Rizwan Ali Khan, William F. Miller, III
  • Patent number: 10544714
    Abstract: A system including a phaser with a first lock pin and a second lock pin in the rotor assembly. The first and second locks pins having a locked position where they engage a recess in the housing assembly and an unlocked position in which they do not engage the housing assembly. The first lock pin locks the rotor assembly to the housing assembly when the phaser is in or near an intermediate phase angle position. The second lock pin locks the rotor assembly to the housing assembly when the phaser is at a full retard position. Alternatively, the second lock pin can lock the rotor assembly to the housing assembly when the phaser is at a full advance position. The second lock pin is spring biased towards the unlocked position and is pressurized to engage and move to the locked position by either the advance or the retard chamber.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: January 28, 2020
    Assignee: BorgWarner Inc.
    Inventor: Franklin R. Smith
  • Patent number: 10544715
    Abstract: A cam phaser is disclosed including a stator, a rotor positioned in the stator and including a locking pin, and a locking cover including a receiving element for receiving the locking pin. A cover plate is arranged on an opposite side of the stator from the locking cover. A check valve plate is positioned between the stator and one of the locking cover or the cover plate and including a plurality of valve elements. A plurality of fastener openings are defined in each of the stator, the locking cover, and the check valve plate. Fasteners extend through the fastener openings. In one embodiment, a radial clearance is defined between the fastener openings in the check valve plate and the fasteners. In one embodiment, at least one axially extending boss is formed around at least one fastener opening of the fastener openings formed in the check valve plate.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: January 28, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Renato de Oliveira Ghiraldi, Alexandre Camilo
  • Patent number: 10539046
    Abstract: Valve trains employing a splined interface between phaser(s) and a concentric camshaft, actuator at rear of camshaft actuated by an actuation rod, adding a clearance hole to the lobe pin for clearance to the actuation rod, supplying oil to camshaft bearings via the concentric camshaft inner tube, and bolt on front camshaft bearing. The valve trains may further employ a third rocker lever that is usable for a selectable valve event (e.g. compression release brake) while also implementing variable valve timing and a concentric camshaft.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: January 21, 2020
    Assignee: Cummins Inc.
    Inventor: Adam C. Cecil
  • Patent number: 10533516
    Abstract: An internal combustion engine includes: a crankcase that supports a crankshaft rotatably about a rotational axis; a cylinder block connected with the crankcase and including at least one pair of cylinders that sandwich a valve chamber therebetween in an axial direction of the crankshaft, the valve chamber housing therein a valve actuating mechanism that connects a camshaft to the crankshaft; a detected member disposed between crank pins corresponding to the pair of cylinders, the detected member rotating integrally with the crankshaft; and a detection sensor disposed to face a trajectory of the detected member and generating a pulse signal in accordance with movement of the detected member. Accordingly, the internal combustion engine can avoid displacement of a nearby part and enlargement of the crankcase as much as possible, while allowing the detected member to be increased in size.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: January 14, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Keita Shigematsu, Nobuyuki Kishi, Takashi Kaneishi
  • Patent number: 10527143
    Abstract: Transmission devices are disclosed having a first planetary drive, a second planetary drive, a hollow shaft, and a shaft which is seated concentrically in the hollow shaft and can be rotated relative to the hollow shaft. In one example, the first planetary drive includes a first sun gear and first planet gears in mesh with the first sun gear, and the second planetary drive has second planet gears in mesh with a second sun gear. The first planet gears and second planet gears may be spaced apart radially from a rotational axis common to the hollow shaft and the shaft, and a shaft section of the shaft may protrude axially from one end of the hollow shaft. In this arrangement, the first sun gear is seated on the shaft section. The second sun gear may be seated on the hollow shaft coaxially with the first sun gear.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: January 7, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Philip Wurzberger, Thorsten Biermann
  • Patent number: 10527172
    Abstract: An internal combustion engine includes an engine housing and a valve drive with a camshaft, a phase adjuster operatively connected to the camshaft, and an actuator for actuating the phase adjuster. The phase adjuster and the actuator delimit an interior space. A cover surrounds the phase adjuster. An actuator holder is provided for fastening the actuator to the engine housing, wherein the actuator holder is surrounded by the cover. A sealing element is disposed between the phase adjuster and the actuator holder. The sealing element seals the interior space against liquid discharge. A method for assembling an internal combustion engine is also provided.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: January 7, 2020
    Assignee: Volkswagen Aktiengesellschaft
    Inventors: Julian Herrmann, Andre Kuphal
  • Patent number: 10526930
    Abstract: In a valve timing control system, a control command unit includes: a first stage setting block and a next stage setting block. The first stage setting block sets a retard holding command value as a control command value to introduce hydraulic fluid to each retard operation chamber under a state where a rotation phase is locked, to start applying an operation pressure more than or equal to an unlock pressure to a lock component. The next stage setting block sets an advance holding command value as a control command value to introduce hydraulic fluid to each advance operation chamber, after setting the retard holding command value, to maintain the applying of the operation pressure more than or equal to the unlock pressure to the lock component.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: January 7, 2020
    Assignee: DENSO CORPORATION
    Inventor: Koichi Aoyama
  • Patent number: 10519819
    Abstract: There is provided a mounting structure of an oil control valve unit configured to control a hydraulic pressure to a variable valve timing device of an engine. The engine is supported by a vehicle body frame. The oil control valve unit is mounted to an outer surface of the engine. The oil control valve unit is detachably mounted to the outer surface of the engine avoiding the vehicle body frame.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: December 31, 2019
    Assignee: SUZUKI MOTOR CORPORATION
    Inventor: Hisashi Ozeki
  • Patent number: 10513952
    Abstract: A valve control of an internal combustion engine has a camshaft and a cam sleeve, which surrounds the camshaft and is fastened in an axially movable manner and has cams, which are associated with individual valves and extend in the radial direction. The cam sleeve can be moved in the axial direction in relation to the camshaft by an actuator during rotation. The cam sleeve has at least two axial segments, which can be moved in relation to each other in the axial direction by the actuator, which engages in the axial segments.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: December 24, 2019
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Ferdinand Weidinger, Alexander Hiereth, Timo Klees
  • Patent number: 10514085
    Abstract: A cam chain tensioner device of an internal combustion engine includes a cam chain tensioner, and a tensioner lifter pressing the cam chain tensioner to a cam chain. The tensioner lifter is mounted on an inclined upper surface of the cylinder head. The cylinder head has therein a valve train oil supply passage supplying oil from an oil pump to the valve train camshafts, and a tensioner lifter oil supply passage supplying oil to the tensioner lifter. The valve gear oil supply passage has a branching portion where the tensioner lifter oil supply passage branches. The branching portion is at a position higher than the tensioner lifter, and communicates with the tensioner lifter disposed at a position lower than the branching portion. It is thus possible to prevent fluttering of the cam chain and to reduce noise generated by the cam chain at the time of restart of the engine after it is stopped.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: December 24, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Nozomi Okada, Yosuke Hoi, Isao Azumagakito, Shigeru Awazu
  • Patent number: 10502100
    Abstract: A cam phaser including a rotor; and a stator, wherein the rotor is rotatable relative to the stator about a rotation axis of the rotor, wherein a blade of the rotor is arrangeable at various positions between two bars of the stator, wherein an intermediary space formed between the two bars is divided by the blade of the rotor into a first pressure cavity and a second pressure cavity, wherein a locking device including a locking bolt that is spring loaded by a preload element and by a locking disc is configured to lock the stator with the rotor, wherein the preload element includes a spring force for locking, wherein the locking bolt is received axially movable in a receiving opening that is flowable by a hydraulic fluid and that is oriented in a direction of a longitudinal axis of the receiving opening that is formed in the rotor.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: December 10, 2019
    Assignee: ECO Holding 1 GmbH
    Inventors: John Snyder, Wes Gerszewski, Steven Nance, Daniel Sing
  • Patent number: 10487701
    Abstract: A switched cushion stop for a variable cam timing phaser of a variable cam timing system is disclosed. The cushion stop may be actively controlled by the spool valve or passively controlled.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: November 26, 2019
    Assignee: BorgWarner Inc.
    Inventors: Chad McCloy, Brian Kenyon
  • Patent number: 10472997
    Abstract: In a camshaft for an internal combustion engine, integrally including: a shaft main portion that extends linearly; a plurality of valve-actuating cams disposed to be spaced apart from each other in an axial direction of the shaft main portion; and a pair of support arms extending along one diametric line of the shaft main portion radially outwardly from one end part of the shaft main portion and being fitted with a follower rotational body, a pair of overhangs are integrated with the shaft main portion and the pair of support arms, the overhangs extending between the support arms in a peripheral direction of the shaft main portion, and a thick-wall portion having a larger thickness in a direction along an axis of the shaft main portion is formed in part, on a radially outer side of the shaft main portion, of each of the overhangs.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: November 12, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Kensuke Mori
  • Patent number: 10473001
    Abstract: Control valves for a hydraulic camshaft adjuster are disclosed. In one example, the control valve includes a housing and a control piston mounted in a receiver of the housing. Several openings may be provided on an inner casing surface of the receiver, at least some of which may be assigned to an inlet port P, a supply port A, a supply port B or a supply port C. The control piston may include a first control groove, a second control groove and a third control groove which can each be connected to at least two openings of the housing depending on a position of the control piston relative to the housing. The first control groove may be configured to be brought into fluid-conductive connection with a first inlet opening assigned to the inlet port P and with an opening assigned to the supply port A.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: November 12, 2019
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Stefan Kramer, David Köhler
  • Patent number: 10458288
    Abstract: A variable valve timing apparatus for an internal combustion engine, including: an actuator that activates a variable valve timing mechanism; a detection unit that detects a driving position of the actuator; a control unit that drive-controls the actuator, and when a predetermined execution condition is established, executes one of a first initialization process and a second initialization process that match the driving position of the actuator detected by the detection unit with an actual driving position of the actuator; and an abnormality determination unit that determines whether or not an abnormality is present in the driving position detected by the detection unit and stores an abnormality history after determining that an abnormality is present. The control unit executes the first initialization process when the abnormality history is stored and the second initialization process when the abnormality history is not stored.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: October 29, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshiyuki Shogenji, Fumito Takimoto, Takashi Nakagawa, Shunsuke Habara
  • Patent number: 10458294
    Abstract: A variable valve device for an engine, may include a camshaft; a movable cam device fitted over the camshaft to be slidable in an axial direction of the camshaft, and configured such that cams with at least two different cam profiles and a guide protruding portion are disposed along the axial direction of the camshaft; at least one shaft groove linearly processed to have a predetermined cross-sectional shape in an external circumferential surface of the camshaft along the axial direction thereof; a cam groove provided in an internal circumferential surface of the movable cam device to communicate with the shaft groove; and an insertion member inserted into a communication space defined by the shaft groove and the cam groove such that a rotational displacement of the camshaft is transmitted to the movable cam device.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: October 29, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Soo Hyung Woo, Back Sik Kim, Seung Kook Han
  • Patent number: 10458289
    Abstract: Methods and systems are provided for a phase control apparatus in a variable cam timing (VCT) system of an engine, the phase control apparatus having a locking pin coupled to a rotor vane and engageable with a locking pin recess in the phase control apparatus cover plate. In one example, a method for assembling the phase control apparatus may include positioning respective retarded side surfaces of the rotor vane and the housing in face-sharing contact while positioning respective retarded side surfaces of the locking pin and the locking pin recess in face-sharing contact and maintaining a backlash gap between only the advanced side surfaces of the locking pin recess.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: October 29, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Jamie Charles Hanshaw, Luke Brodbeck, Andrew Erich Mast, Shawn Kevin Carlisle, Paul John Adam, Joel John Beltramo