Hydraulic System Patents (Class 123/90.12)
  • Patent number: 10808579
    Abstract: For a given cylinder in the engine having two intake valves and two exhaust valves, one of the intake valves is driven by a bucket tappet, while the other intake valve is actuated via a roller finger follower. Similarly, one of the exhaust valves is driven by a bucket tappet, while the other exhaust valve is actuated via a roller finger follower. The intake valves read inputs form an intake camshaft, and the exhaust valves read inputs from an exhaust camshaft.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: October 20, 2020
    Assignee: Cummins Inc.
    Inventors: Darren Yaoshun Ting, David M. Barnes
  • Patent number: 10738664
    Abstract: A controller sets a target hydraulic pressure from a required hydraulic pressure of a hydraulically operated device according to an operating condition of an engine. The controller causes an oil control valve to perform feedback control of the discharge amount of an oil pump in such a manner that an actual hydraulic pressure detected by a hydraulic pressure sensor coincides with the target hydraulic pressure. The controller executes feedback control after executing fixed duty control of setting a duty ratio of the oil control valve to a fixed duty ratio for a predetermined period of time from start of the engine.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: August 11, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Masanori Hashimoto, Hisashi Okazawa
  • Patent number: 10704431
    Abstract: A regenerative valve hydraulic actuator includes a high-pressure accumulator fed by a high-pressure feed hydraulic pump, an actuator defining an actuator hydraulic chamber for actuating—by way of a progressive lever arm ratio lever—a valve provided with a valve return device, a valve lifter hydraulic valve placed between the high-pressure accumulator and the actuator hydraulic chamber, a lifter check valve which connects a low-pressure accumulator to the actuator hydraulic chamber, a valve closure hydraulic valve placed between the chamber and a closure and regeneration hydraulic motor which recovers energy previously invested to open the valve.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: July 7, 2020
    Inventor: Vianney Rabhi
  • Patent number: 10689052
    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 provided with a transmission. A heat exchanger is mounted in front of the engine. The oil control valve unit is mounted at a side of the engine. A transmission cover configured to cover the transmission from a side bulges from a side surface of the engine and the oil control valve unit is mounted above the transmission cover.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: June 23, 2020
    Assignee: SUZUKI MOTOR CORPORATION
    Inventor: Hisashi Ozeki
  • Patent number: 10669900
    Abstract: Aspects of the present disclosure are directed to an internal combustion engine having a valve actuation device and at least one first exhaust valve and one second exhaust valve per cylinder. The first and second exhaust valves may be actuated together in at least one operating area of the internal combustion engine, via an exhaust valve bridge and a first valve lifter, by a first cam lobe of a first exhaust cam arranged on a camshaft. The camshaft having a second exhaust cam with at least one additional cam lobe and at least one second cam lobe A transmission device being arranged in the functional path between the second exhaust cam and the second exhaust valve, the transmission device allowing an idle stroke to be activated or deactivated. The first exhaust cam and the second exhaust cam are configured and arranged to be rotatable relative to one another.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: June 2, 2020
    Assignee: AVL List GmbH
    Inventors: Andreas Zurk, Martin Klampfer, Gernot Hirschl
  • Patent number: 10662828
    Abstract: A camshaft phaser includes an input member connectable to the crankshaft of an engine; an output member connectable to a camshaft of the engine and defining an advance chamber and a retard chamber with the input member. A valve spool is moveable between an advance position and a retard position and includes a valve spool bore extending thereinto. An insert within the valve spool bore and carries a check valve. The check valve includes a check valve member which moves between a seated position and an unseated position. The check valve also includes a check valve positioning member which is held in compression against an inner periphery of the valve spool bore such that compression of the check valve positioning member holds the check valve in contact with the insert.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: May 26, 2020
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Thomas H. Fischer, Prashant Bhokardole
  • Patent number: 10626761
    Abstract: A camshaft phaser includes an input member connectable to the crankshaft of an engine; an output member connectable to a camshaft of the engine and defining an advance chamber and a retard chamber with the input member. A valve spool is moveable between an advance position and a retard position and includes a valve spool bore extending thereinto. An insert within the valve spool bore and carries a check valve. The check valve includes a check valve member which moves between a seated position and an unseated position. The check valve also includes a check valve positioning member which is held in compression against an inner periphery of the valve spool bore such that compression of the check valve positioning member holds the check valve in contact with the insert.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: April 21, 2020
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Thomas H. Fischer, Prashant Bhokardole
  • Patent number: 10626763
    Abstract: In an internal combustion engine, a linkage is provided between an auxiliary motion source and a main motion load path, such that motions received by the linkage from the auxiliary motion source result in provision of a first force to at least one engine valve and a second force to the main motion load path in a direction toward a main motion source. Where an automatic lash adjuster is associated with the main motion load path, the second force may be selected to aid in the control of lash adjustments made by the automatic lash adjuster. In various embodiments, the linkage may be embodied in an mechanical linkage, whereas in other embodiments, an hydraulic linkage may be employed. The linkage may be incorporated into, or otherwise cooperate, a valve bridge or a rocker arm.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: April 21, 2020
    Assignee: Jacobs Vehicle Systems, Inc.
    Inventors: Peter Jo, Justin Baltrucki, David Ferreira, Neenad Wamane
  • Patent number: 10612427
    Abstract: A variable valve lift (VVL) system for an internal combustion engine is provided that utilizes hydraulic fluid supply pressure feedback to provide noise free operation. The VVL system includes a high pressure pump, a solenoid valve, a pressure translating device, a one-way valve, and a hydraulic fluid pressure sensor. The high pressure pump is fluidly connected to the solenoid valve and pressure translating device by at least one fluid gallery that forms a high pressure chamber. The solenoid valve selectively fluidly connects the high pressure chamber to a middle pressure chamber formed by at least one fluid gallery that fluidly connects the one-way valve to the solenoid valve. The hydraulic fluid pressure sensor is arranged to detect a hydraulic fluid supply pressure of the one-way valve and provides feedback to an electronic controller that determines a proper fluid intake opening timing of the solenoid valve.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: April 7, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Kevin Sittner, Hermann Neubeck
  • Patent number: 10539048
    Abstract: A variable camshaft timing device that adjusts phase between a camshaft and a crankshaft includes a planetary gear assembly that changes an angular position of the camshaft relative to an angular position of the crankshaft; a sun gear configured to receive an output shaft of an electric motor that rotates at least a portion of the planetary gear assembly and controls phase adjustment between the camshaft and crankshaft by angularly displacing the camshaft with respect to the crankshaft; and a hydraulic lock (82) that releasably engages a portion of the variable camshaft timing device (10) in response to force applied by pressurized fluid thereby selectively preventing rotation of the camshaft relative to the crankshaft.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: January 21, 2020
    Assignee: BorgWarner, Inc.
    Inventors: Chad McCloy, Braman Wing
  • Patent number: 10526926
    Abstract: An exhaust valve rocker arm assembly operable in a combustion engine mode and an engine braking mode can include a rocker shaft and a rocker arm. The rocker shaft can define a pressurized oil supply conduit. The rocker arm can receive the rocker shaft and is configured to rotate around the rocker shaft. The rocker arm can have an oil supply passage defined therein. A valve bridge can engage a first exhaust valve and a second exhaust valve. An accumulator assembly can be disposed in the rocker arm and includes an accumulator piston that translates within the accumulator piston housing between closed and open positions. A predetermined amount of oil is stored in the accumulator assembly.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: January 7, 2020
    Assignee: Eaton Srl
    Inventor: Nicola Andrisani
  • Patent number: 10526936
    Abstract: A system for actuating engine valve comprises a main valve actuation motion source configured to supply main valve actuation motions to the at least one engine valve via a main motion load path, and an auxiliary valve actuation motion source separate from the main valve actuation motion source and configured to supply complementary auxiliary valve actuation motions to the at least one engine valve via an auxiliary motion load path. A lost motion component is configured, in one state, to maintain lash between the auxiliary valve actuation motion source and the auxiliary motion load path or within the auxiliary motion load path and, in another state, to take up this lash. The auxiliary valve actuation motion source is further configured to supply at least one lash-prevention valve actuation motion that substantially matches at least one of the main valve actuation motions.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: January 7, 2020
    Assignee: JACOBS VEHICLE SYSTEMS, INC.
    Inventors: Dong Yang, Peter Jo, Justin D. Baltrucki
  • Patent number: 10508964
    Abstract: A valve assembly includes a valve body with an interior cavity and one or more supply ports, a control port, and an exhaust port each fluidly connected to the interior cavity. An armature assembly is movable within the interior cavity from a first position to a second position in response to the coil being energized. In some configurations, a regulator body, which is connected to the valve body, has an exhaust passage fluidly connected to the exhaust port. A regulator valve in the regulator body prevents fluid flow out of the exhaust passage when fluid pressure on the regulator valve is at or below a pilot pressure. The regulator valve permits fluid flow out of the exhaust passage when fluid pressure on the regulator valve is greater than the pilot pressure. The valve body is configured to provide fluid from the supply port/ports to the control port.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: December 17, 2019
    Assignee: Eaton Intelligent Power Limited
    Inventors: Steven L. Ambrose, Daniel Bamber, Robert A. Dayton
  • Patent number: 10480828
    Abstract: A floating module for modular solar panel platforms having two separate components mounted, a structural component that is a rigid component and a buoyancy component that is a flexible component allowing for a more compact and simple solution all-around. The floating module allows for a technologically more advanced floating component, easier to produce, transport and deploy than most currently available solutions.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: November 19, 2019
    Assignee: SOLARISFLOAT, LDA
    Inventors: Nuno Correia, Carla Gomes, Ricardo Pinto, Luis Pina, Nuno Moita, Jorge Teixeira Da Silva
  • Patent number: 10473622
    Abstract: Provided is a method for flaw inspection of a stem joint of a valve including: an internal flaw inspection step including causing a flaw detection probe to be disposed so as to face upward in water in a tank in an ultrasonic inspection chamber, holding a valve in such fashion as to cause the tip to face the flaw detection probe, and inspecting for a flaw at the interior of the stem joint; and a surface flaw inspection step including causing a flaw detection probe to be disposed horizontally in an eddy-current inspection chamber, holding a valve in such fashion as to cause the side face of a stem of the valve to be close to and facing the flaw detection probe, inspecting for a flaw on the surface of the stem joint while the flaw detection probe and the valve are made to engage in mutual rotation.
    Type: Grant
    Filed: February 3, 2018
    Date of Patent: November 12, 2019
    Assignee: Nittan Valve Co., Ltd.
    Inventors: Yuichi Abe, Shigeru Uchida, Osamu Takahashi
  • Patent number: 10465571
    Abstract: Methods and systems are provided for an engine oil system of a cylinder head. In one example, an engine oil system may include a first oil gallery and a second oil gallery fluidly coupled to each other via a plurality of oil chambers. Each oil chamber includes a plug, and one or more of the plugs may include a slot shaped to direct a flow of engine oil from a solenoid valve to the second oil gallery.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: November 5, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Jeff D. Fluharty, Jonathan Denis Crowe, John Christopher Riegger, James E. Froling
  • Patent number: 10458292
    Abstract: An actuator for axial displacement of a gas exchange valve of a combustion engine is configured to be connected to a pressure fluid source and a pressure fluid sink, respectively, and to be driven by a gaseous pressure fluid and includes an actuator piston including an actuator piston disc and an actuator piston rod projecting therefrom in the axial direction, a cylinder volume, the disc separating the cylinder volume into a first part and a second part and being displaceable back and forth in the axial direction in the cylinder volume between an inactive position and an active position, the first part being configured for controllable fluid communication with the pressure fluid source and the pressure fluid sink, respectively, and a hydraulic circuit includes a chamber, the free end of the rod being arranged therein, wherein the rod is displaceable back and forth in the axial direction in a channel.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: October 29, 2019
    Assignee: FREEVALVE AB
    Inventor: Anders Hoglund
  • Patent number: 10429427
    Abstract: The invention relates to a method (3) for determining (33) a state characteristic value (28) of a electric device (4) controlled by a temporally variable control signal (17). The at least one state characteristic value (28) is determined using the frequency of the temporally variable control signal (17) and/or the switching characteristics of the temporally variable control signal (17).
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: October 1, 2019
    Assignee: Danfoss Power Solutions GmbH & Co. OHG
    Inventors: Sven Fink, Matt Saterbak
  • Patent number: 10422256
    Abstract: An engine brake device is provided for attenuating compression. The device is able to brake engine by attenuating a pressure increase in a cylinder by temporarily opening an exhaust valve at the end of a compression stroke of the engine, using an eccentric assembly eccentrically coupled to a pivot center of an exhaust rocker arm and an actuator for pushing up the eccentric assembly.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: September 24, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Won Seok Lee
  • Patent number: 10422271
    Abstract: Embodiments disclosed herein relate to internal combustion engines, combustion systems that include such internal combustion engines, and controls for controlling operation of the combustion engine. The internal combustion engine may include one or more mechanisms for injecting fuel, air, fuel-air mixture, or combinations thereof directly into one or more cylinders, and controls may operate or direct operation of such mechanisms.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: September 24, 2019
    Inventor: Douglas David Bunjes
  • Patent number: 10415436
    Abstract: A variable valve train module selectively controls the opening and closing of a valve of an engine. The variable valve train module includes a drive element configured to be driven by a cam which rotates on a camshaft, a pump which is driven by the drive element, and a hydraulic control unit. The hydraulic control unit is configured to control the engine valve. The hydraulic control unit has a high pressure chamber containing hydraulic fluid which is selectively pressurized by the pump. The hydraulic control unit also has a control valve which is configured to depressurize the high pressure chamber, and a damper which is configured to increase an effective volume of the high pressure chamber when a pressure in the high pressure chamber exceeds a threshold value.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: September 17, 2019
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Todd Simcina, Bradley P. Bergsma, Justin LaPorte, Rong Zhang
  • Patent number: 10400728
    Abstract: The invention relates to an electromagnetically actuable intake valve for a high-pressure pump of a fuel injection system, in particular of a common-rail injection system, comprising a reciprocating valve closure element (2) that engages with a valve seat (1) and is loaded in the closing direction by the spring force of a valve spring (3) which is supported on a spring plate (4) connected to the valve closure element (2), further comprising a reciprocating armature (6) that engages with an electromagnet (5) and is loaded in the direction of the valve closure element (2) by the spring force of an armature spring (7) which is larger than that of the valve spring (3). According to the invention, the spring plate (4) has a first abutment face (9) for limiting the opening travel of the valve closure element (2) and a second abutment face (10) for mechanically coupling to the armature (6). The invention also relates to a high-pressure pump having such an intake valve.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: September 3, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Hans Heber, Stefan Kolb
  • Patent number: 10352200
    Abstract: The present invention provides a camshaft capable of suppressing an increase in the number of parts and the number of places to be processed, preventing scratching on a sliding surface that is a part of an outer peripheral surface of an outer shaft and on which an inner cam is rotated, and preventing occurrence of deformation in the entire camshaft after final assembly. A camshaft includes an inner cam that is attached from a radial direction of an outer shaft and that is fixed to an inner shaft with a pin inserted into the inner cam from the radial direction of the outer shaft in a cam surface of the inner cam.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: July 16, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Fumio Sato, Hiroshi Takeda, Takuro Yoshimura, Koji Saito
  • Patent number: 10337363
    Abstract: A valve opening and closing timing control apparatus includes a driving-side rotating body, a driven-side rotating body fixed to a camshaft by a bolt, a fluid pressure chamber, an intermediate lock mechanism, a lock flow passage bringing the working fluid to the intermediate lock mechanism, and an electromagnetic valve including a spool which is arranged at an inner portion of the bolt, the lock flow passage including a first flow passage which is arranged between the spool and a supply flow passage in a radial direction and which is connected to the supply flow passage, the lock flow passage including a second flow passage which is provided at the inner portion of the bolt in a penetrating manner in the radial direction and which brings the working fluid to flow between the spool and the intermediate lock mechanism.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: July 2, 2019
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yoshiaki Yamakawa, Masaki Kobayashi
  • Patent number: 10309563
    Abstract: A drive unit, in particular an internal combustion engine, has a fluid line arrangement, wherein the fluid line arrangement has a cavity accessible for a fluid via a bore in a first wall element. A spacer element for the fluid line arrangement has a resilient clamping sleeve which can be introduced through the bore. The clamping sleeve has a first longitudinal section which is provided so as to remain in the bore in contact with the bore wall and a second longitudinal section which is set back from the first longitudinal section by way of at least one notch which runs transversely with respect to a longitudinal axis of the clamping sleeve. The second longitudinal section is configured as an axially slotted tube which serves as the spacer element, the borders of the slot being bent radially outwards.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: June 4, 2019
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventor: Andreas Meder
  • Patent number: 10309271
    Abstract: A central valve for a camshaft adjuster, and to an internal combustion engine, which includes a camshaft, a camshaft-adjusting device, and a central valve. The central valve includes a shaped part as a valve housing (3), including a control piston (4) guided coaxially within the valve housing (3) in such a way that the control piston can move axially and including a stop, which limits the mobility of the control piston in an axial direction (piston stop). The piston stop is a piston stop washer (5), wherein the piston stop washer and the valve housing (3) are joined.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: June 4, 2019
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Jens Hoppe, Markus Kinscher
  • Patent number: 10280811
    Abstract: A valve train system that eliminates the inefficiencies of current spring biased systems. The system uses teeter beams that are manipulated by cams that are driven by cam shafts to control and operate the valve system more efficiently and dependably.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: May 7, 2019
    Inventor: Steve James Duel
  • Patent number: 10274105
    Abstract: A spool 220 is provided with a second land section 224 that blocks a portion between the spool 220 and the valve sleeve 210 at a position between the output port P21 and the lead-in port P22 when the spool 220 is located in a position for connecting the channel for input T1 and the channel for output T2 via the input port P10 and the output port P21 and blocking a channel leading from the channel for output T2 to the channel for discharge T3, and when the spool 220 is located in a position for connecting the channel for output T2 and the channel for discharge T3 via the lead-in port P22 and the discharge port P30 and blocking a channel leading from the channel for input T1 to the channel for output T2.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: April 30, 2019
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventors: Eiji Okamoto, Satoshi Shimizu
  • Patent number: 10247061
    Abstract: A hydraulic valve brake for a hydraulic valve drive of an internal combustion engine is provided. The valve brake includes a housing with a housing wall and with a housing base, and includes a piston which moves axially in the housing and one end side of which, together with the housing wall and the housing base, delimits a hydraulic pressure chamber and the other end side of which actuates a gas exchange valve. The housing wall is perforated in the region of the pressure chamber by one or more overflow openings, the opening cross sections of which are controlled by a control edge, which delimits the end side at the pressure chamber side, of the piston. In this case, it is the intention for the axial distance (h) between the control edge of the piston, when the latter is fully retracted into the housing, and the housing base to be set by a spacer of predetermined thickness (d).
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: April 2, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Steve Beier, Arno Bachstadt, Hendrik Thomann
  • Patent number: 10240524
    Abstract: Described herein is a system for variable actuation of an engine valve of an internal-combustion engine, where the system is able to actuate the engine valves, selectively, in a four-stroke operating mode and in a two-stroke operating mode, on the basis of the operating conditions of the engine.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: March 26, 2019
    Assignee: C.R.F. Societa Consortile per Azioni
    Inventors: Marco Lucatello, Francesco Vattaneo, Vittorio Doria
  • Patent number: 10234024
    Abstract: A control method for controlling a transmission of a vehicle, the method comprising: receiving at least one measurement relating to a hydraulic lag of a continuously variable valve lift system that occurs in a cold condition, the continuously variable valve lift system being associated with an engine of the vehicle; determining, based on the at least one measurement relating to the hydraulic lag, an engine speed threshold above which engine power output is impaired as a result of the hydraulic lag; monitoring the engine speed; and generating an alert if the engine speed exceeds the engine speed threshold.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: March 19, 2019
    Assignee: JAGUAR LAND ROVER LIMITED
    Inventor: Adam Moorcroft
  • Patent number: 10233795
    Abstract: A hydraulic fluid system for a variable valve train system is provided that allows hydraulic fluid flow from a high pressure chamber to a medium pressure chamber during a higher pressure phase after a control valve closes. The hydraulic fluid system includes a housing defining (a) the middle pressure chamber which is connected to a hydraulic fluid supply, and (b) the high pressure chamber which contains hydraulic fluid that is pressurized by a pump piston assembly configured to engage a rotating cam. A control valve selectively provides a first flowpath for hydraulic fluid between the middle pressure chamber and the high pressure chamber. A bypass valve selectively provides a second flowpath for hydraulic fluid between the middle pressure chamber and the high pressure chamber based on a pressure of the hydraulic fluid in the high pressure chamber.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: March 19, 2019
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: John Stallmann
  • Patent number: 10202876
    Abstract: A lash adjuster includes a bottomed cylindrical body and a cylindrical plunger reciprocably inserted into the body and having a bottom wall and a peripheral wall. The plunger has a low-pressure chamber. The peripheral wall of the plunger includes an annular band portion abutting against an upper part of a peripheral wall of the body. The peripheral wall of the plunger has a plurality of plunger oil holes located below the band portion. The plunger oil holes include respective lower ends defining a level of the oil stored in the low-pressure chamber. The plurality of plunger oil holes are located at a common height position of the peripheral wall of the plunger coming close to the band portion.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: February 12, 2019
    Assignee: OTICS CORPORATION
    Inventors: Hiroyuki Suzuki, Kyosuke Sugiura, Haruyasu Tanaka
  • Patent number: 10197436
    Abstract: A fluid pulse device includes a piezo actuated valve, a piezo injector, a delivery system, and a control system. The piezo actuated valve has a valve body, a tube, and a piston assembly. The valve body defines a first opening, a second opening, and a valve cavity that is disposed between the first opening and the second opening. The tube extends from the valve body. The piston assembly includes a piston head and a stem that is connected to the piston head. The piezo injector has an injector tip that extends through the first opening. The delivery system is fluidly connected to the piezo injector. The control system is operatively connected to the piezo injector and is configured to actuate the piezo injector to provide a fluid pulse.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: February 5, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Keven G. Van Duyn, Richard W. Monahan
  • Patent number: 10197128
    Abstract: A hydraulic torque compensation device comprises a pair of housings, a first housing including a first high pressure liquid chamber and a second low pressure liquid chambers, a second housing having a third high pressure liquid chamber, a fourth accumulator chamber, and a fifth low pressure chamber that is defined by a wall and an end of the second housing. A first main duct links the first chamber of the first housing to the third chamber of the second housing. A second main duct links the second chamber of the first housing to the fifth chamber of the second housing. Each housing also include a piston, the first chamber between a first piston body and an end of the first housing and the third chamber between a second piston body and the wall. The device ensures a counter action to engine loads when a positive torque is applied.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: February 5, 2019
    Assignee: HUTCHINSON AEROSPACE & INDUSTRY Inc.
    Inventors: Iman Shahosseini, John Nall, Ivan Roson
  • Patent number: 10184364
    Abstract: Methods and systems are provided for deactivating a valve actuation mechanism. In one example, a system may include a hydraulic gallery that may deliver a restricted flow of hydraulic fluid from a hydraulic flow restrictor to a pressure relief valve within a valve deactivation oil control valve, and during a second condition may deliver an unrestricted flow of hydraulic fluid from the valve deactivation oil control valve to the hydraulic flow restrictor. The hydraulic flow restrictor may comprise two vertical bores within the camshaft carrier that are fluidically coupled via a restrictive groove on the bottom surface of the camshaft carrier.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: January 22, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Theodore Beyer, Charles Joseph Patanis, Jon Michael LaCroix, Joseph Keenan, Jonathan Denis Crowe
  • Patent number: 10107159
    Abstract: An internal combustion engine includes a camshaft, a cylinder head, a head cover, a high-pressure pump, and a vacuum pump. The high-pressure pump includes a plunger that abuts against a cam provided on the camshaft. The high-pressure pump is configured to be driven by rotation of the cam such that oil that has lubricated abutting portions of the cam and the plunger collides with an inside wall of the head cover. The vacuum pump is mounted to the cylinder head. The vacuum pump is configured to draw in air from an inlet and discharge an oil mist with air from an outlet. The outlet is arranged such that the oil mist with air from the outlet is discharged into a space where an oil mist formed by a spray of oil that has collided with the inside wall of the head cover stagnates.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: October 23, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tetsuya Kurosaka
  • Patent number: 10087792
    Abstract: An actuator comprises a hollow first piston (11) comprising a first extant with a first outer diameter (D1) and a second extant comprising a second outer diameter (D2), where D1>D2. A second piston (12) is slidable within the first piston. An actuator housing (14) comprising a recess (22), a first tubular port (23) in communication with the first piston, and a second tubular port (24) in communication with the second piston. The first extant has a length (L1) and wherein the second extant has a length (L2). The first tubular port extends for a length (L4), and the recess extends for a length (L3), where L4?L2, and where L3>L2>L1. The first piston and the second piston are housed in the recess.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: October 2, 2018
    Assignee: Eaton Intelligent Power Limited
    Inventor: Dale Arden Stretch
  • Patent number: 10082052
    Abstract: A replaceable hydraulic lash adjuster and method for assembling such are disclosed. The replaceable hydraulic lash adjuster includes a body, a piston, a check valve and a spring. The body configured to be received in and released from a compartment of a rocker arm. The body including a sidewall surrounding a floor. The floor including a passage that extends between an upper cavity and a lower cavity of the body. The piston disposed in the lower cavity. The piston defining a pocket. A check valve is disposed inside the lower cavity and a spring is disposed inside the pocket. The replacable hydraulic lash adjuster is configured to be slidingly removeable from the rocker arm.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: September 25, 2018
    Assignee: Caterpillar Inc.
    Inventors: Ashwin A. Hattiangadi, Selvakumar Selvaraj
  • Patent number: 10077689
    Abstract: A combustion engine includes, a first controllable engine valve (8) arranged to selectively open/close a combustion chamber (7) included in the combustion engine (1), and a gas handling system arranged to drive the first engine valve (8), which gas handling system includes a closed pneumatic pressure fluid circuit, wherein the closed pressure fluid circuit includes, coupled in series with each other, a compressor (31) and a valve actuator (10) that are operatively connected to the first engine valve (8). The combustion engine is characterized by the gas handling system further including a gas accumulator (38) that is connected with the closed pressure fluid circuit via at least one gas accumulator conduit (39), which includes a controllable valve (40). A gas handling system for pneumatic control of a valve actuator is also described.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: September 18, 2018
    Assignee: Freevalve AB
    Inventors: Anders Hoglund, Urban Carlson, Christian Von Koenigsegg
  • Patent number: 10077688
    Abstract: A cam shaft phaser, including: a stator including stops; a rotor rotatable with respect to the stator and including a plurality vanes extending radially outward from a body; a plurality of channels, each channel passing through a respective vane included in the plurality of vanes; and a plurality of pairs of advance and retard chambers at least partially formed by the plurality of radially inwardly extending stops and the plurality of vanes. Advance and retard chambers for each pair of advance and retard chambers are separated in a first circumferential direction by a respective vane from the plurality of vanes. Each channel connects the advance and retard chambers for said each pair of advance and retard chambers. The first plurality of channels are arranged to enable fluid flow through the first plurality of channels to displace the rotor from at least one circumferential position to a mid-lock or retard-lock position.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: September 18, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Inhwa Chung, Gerhard Scheidig, Steven Burke
  • Patent number: 10072538
    Abstract: A cam shaft phase setter for adjusting the rotational angular position of a cam shaft relative to a crankshaft of an internal combustion engine by a hydraulic fluid, the cam shaft phase setter including: a stator connected to the crankshaft; a pressure chamber; a rotor connected to the cam shaft, the rotor being adjustable relative to the stator by introducing the fluid into the pressure chamber; a control valve including a valve housing and a valve piston; and an actuating unit for axially adjusting the valve piston; wherein the cam shaft phase setter is configured such that fluid flowing through the control valve flows back into an engine housing which rotatably mounts the cam shaft.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: September 11, 2018
    Assignee: Schwaebische Huettenwerke Automotive GmbH
    Inventors: Claus Welte, Uwe Meinig, Juergen Bohner
  • Patent number: 10066518
    Abstract: The variable valve actuating device (20) comprises a switch pin (53) slidably received in the valve lifter (24) so as to selectively abut the end surface of the valve stem as the valve lifter is actuated by the cam. The device further comprises a first spring retainer (36) attached to an intermediate part of the valve stem (32) to engage a first valve spring (35), and a second spring retainer (44) slidably engaged by an end part of the valve stem to engage a second valve spring (43). The valve stem is provided with a stem end (39) which is enlarged with respect to a part of the valve stem slidably engaging the second spring retainer so as to define a shoulder surface (40a) that engages the second spring retainer against a spring force of the second valve spring.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: September 4, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Chikara Tanaka, Kaori Takehana
  • Patent number: 10024204
    Abstract: A hydraulic camshaft adjuster (1), in particular a vane-type hydraulic camshaft adjuster, including a rotor (2) and a stator (3) which are mounted to rotate with respect to each other, a cover (10) fixed on the stator (3), including a locking receiver and at least one locking pin (11, 12) accommodated in the rotor (2), the locking pin being slidable in the axial direction and prestressed in the direction of the locking receiver, and a hydraulic channel (27, 28, 29) to apply pressure of the locking pin (11, 12) against the prestress of same, the hydraulic channel being able to be filled and emptied with a hydraulic medium via a central screw, wherein in the rotor (2) at least one additional discharge channel (37, 38, 39, 40) fluidically connected to the hydraulic channel (27, 28, 29) is formed with a discharge valve (33, 34, 35, 36), wherein preferably the discharge valve (33, 34, 35, 36) closes the discharge channel (37, 38, 39, 40) when the locking pin (11, 12) is pressurized and opens the discharge channel
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: July 17, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Jochen Thielen, Olaf Boese, Torsten Zschieschang
  • Patent number: 9995188
    Abstract: The present invention relates to a valve train mechanism and a fuel supply system of internal combustion engine, and particularly relates to an oil control device of a hydraulic fully variable valve system of the internal combustion engine. This device connected with the hydraulic valve system of internal combustion engine, the device consists of a housing, a rotary valve, a hydraulic accumulator and a transmission mechanism. The rotary valve, the hydraulic accumulator and the transmission mechanism are installed in the housing. The rotary valve consists of a rotary valve shaft and a rotary valve sleeve. The hydraulic accumulator consists of an accumulator piston, an accumulator spring, an end cover, a sealing seat ring and a rubber gasket and is installed in the cavity at one end of the housing. An accumulator chamber is provided between the rotary valve and the hydraulic accumulator. The transmission mechanism consists of a transmission gear, a gear shaft and a cross slide coupling.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: June 12, 2018
    Assignee: Shandong University
    Inventor: Zongfa Xie
  • Patent number: 9988949
    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: October 21, 2014
    Date of Patent: June 5, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Paul A. Pietrzyk, John Eric Rollinger, Jamie Charles Hanshaw, Ed Badillo, Gilbert Fournelle
  • Patent number: 9964005
    Abstract: A system and method for diagnosing malfunctions in a variable valve actuation device. The method uses a rocker arm assembly with a hydraulically operated latch for latching together first and second arms of the rocker arm assembly when latched. The rocker arm assembly includes a source of pressurized fluid connected to a hydraulic valve that provides fluid high or low pressure fluid to the hydraulically-operated latch. A control gallery connects the hydraulic valve to the latch. A pressure transducer is positioned within the gallery and is adapted to create a signal indicating the pressure in the gallery. A control unit is coupled to the hydraulic valve and the pressure transducer. The control unit is adapted to sense engine operation parameters, actuate the hydraulic valve, read the signal from the pressure transducer; and identify malfunctions of the rocker arm assembly based upon the signal from the transducer.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: May 8, 2018
    Assignee: EATON CORPORATION
    Inventors: Austin Robert Zurface, Robert Boychuk, Brian Karl VanDeusen
  • Patent number: 9957856
    Abstract: A hydraulic valve brake for a hydraulic valve drive of an internal combustion engine is provided. The valve brake includes a housing with a housing wall and with a housing base, and includes a piston which moves axially in the housing and one end side of which, together with the housing wall and the housing base, delimits a hydraulic pressure chamber and the other end side of which actuates a gas exchange valve. The housing wall is perforated in the region of the pressure chamber by one or more overflow openings, the opening cross sections of which are controlled by a control edge, which delimits the end side at the pressure chamber side, of the piston. In this case, it is the intention for the axial distance (h) between the control edge of the piston, when the latter is fully retracted into the housing, and the housing base to be set by a spacer of predetermined thickness (d).
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: May 1, 2018
    Assignee: Schaffer Technologies AG & Co. KG
    Inventors: Steve Beier, Arno Bachstadt, Hendrik Thomann
  • Patent number: 9885259
    Abstract: A lock determination device for variable valve timing mechanism includes means for detecting an operating position of a variable valve timing mechanism having a function of locking a valve timing of an internal combustion engine in an intermediate position between a most retarded position where the valve timing is most retarded and a most advanced position where the valve timing is most advanced in stopping operation of the internal combustion engine, means for starting a timer when the operating position of the variable valve timing mechanism enters an intermediate region, the intermediate region being a predetermined region including the intermediate position, means for determining whether or not the operating position of the variable valve timing mechanism is in a determination holding region wider on a retardation side than the intermediate region after the timer is started, means for incrementing a value of the timer if the operating position of the variable valve timing mechanism is in the determination
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: February 6, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Hideo Mitsuhashi, Kenji Ariga, Takahiro Anada, Ken Shiozawa
  • Patent number: 9828888
    Abstract: The object of this invention is to simplify the timing system of all types of internal combustion engine. The system eliminates existing conventional timing trains. The hydraulic, mechanical or electrical/electronic direct timing systems that form the subject of the invention offer minimal resistance and minimal transmission. The piston strokes are given directly by the crankshaft by means of a system fixed thereto which via a mechanical or hydraulic or electrical or electronic system transmits the strokes to the cylinder valves. The system can be connected to all types of indirect transmission and has adjusting systems that allow it to be adapted to suit all types of internal combustion engine.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: November 28, 2017
    Inventor: Francois Boeck