Patents Examined by John Kwon
  • Patent number: 10690070
    Abstract: Methods and systems are provided for tracking a fuel puddle mass in the intake port of a deactivated engine cylinder. The difference in fuel evaporation rate in the deactivated cylinder intake is accounted for by applying distinct time constant and gain values to a transient fuel compensation model. A fuel vapor content is clipped once the intake vapor pressure in the intake port of the deactivated cylinder reaches a saturation pressure limit.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: June 23, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Adithya Pravarun Re Ranga, Amey Karnik, Pravin Sashidharan, Gopichandra Surnilla, Michael Howard Shelby, Eric Storhok
  • Patent number: 10690093
    Abstract: An internal combustion engine includes a cylinder block, a cylinder-block passage, a cylinder head, a cylinder-head passage, cylinders, an introducing portion, a restricting wall, and communicating portions. The introducing portion is configured to introduce coolant flowing in the cylinder-head passage into an EGR cooler. The restricting wall is configured to restrict flow of the coolant from a section corresponding to the spark plug toward the introducing portion. The communicating portions cause the cylinder-block passage and the cylinder-head passage to communicate with each other. A direction perpendicular to both the extending direction of the central axis of each cylinder and the cylinder arrangement direction is defined as a predetermined direction. Certain one or certain ones of the communicating portions are arranged at positions closer to an intake manifold than the restricting wall in the predetermined direction.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: June 23, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hironobu Sakamoto
  • Patent number: 10677181
    Abstract: Systems and methods for operating an engine with a plurality of deactivating valves for deactivating engine cylinders are presented. In one example, a plurality of different cylinder operating modes may be available to operate the engine. Engine fuel consumption in each of the plurality of different cylinder operating modes is estimated and the engine may be operated in the cylinder mode that provides greatest fuel efficiency.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: June 9, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Jeffrey Allen Doering, John Eric Rollinger, Karen Willard, Brett Dryer
  • Patent number: 10662866
    Abstract: A diesel engine includes a cylinder head, a cylinder sleeve, a piston, an injector, and a combustion chamber. The top side of the piston includes an annular top surface, an annular collision belt and an annular cavity. The collision belt includes a collision surface, an upper guide surface, and a lower guide surface. An annular throat is formed between the upper guide surface and the cylinder head. The collision belt divides the combustion chamber into a headspace and a central portion. The volume of the headspace is more than three times of the volume of the central portion. A major portion of the fuel jet injected by the injector is directed into the headspace. The results are faster mixing of fuel and air and complete combustion in the combustion chamber, and a reduction of fuel consumption rate by 2%. A method for fuel distribution and combustion is also disclosed.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: May 26, 2020
    Assignee: Dalian University of Technology
    Inventors: Wuqiang Long, Shuang He, Jiangping Tian, Hua Tian, Baoguo Du, Liyan Feng, Yao Fu, Ping Yi
  • Patent number: 10666129
    Abstract: To protect a switching element to be used in a boost circuit for an in-cylinder injection type internal combustion engine or the like from damage caused by overheating without using a temperature detection element. In a control circuit that switches a switching element between a conductive state and a non-conductive state, the switching element is controlled or a temperature of the switching element is estimated based on a potential difference between an input terminal and an output terminal of the switching element and a voltage applied to a control terminal of the switching element in the conductive state.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: May 26, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Atsushi Okonogi, Takao Fukuda, Koichi Tsukio
  • Patent number: 10655592
    Abstract: A system for controlling one or more conditions associated with combustion events in one or more cylinders of an engine while generally maintaining a spark timing value at a relatively constant value. The system includes a controller configured to determine one or more temporary adjustments to the spark timing value that brings one or more conditions, such as, for example, engine knock levels and/or NOx levels to around, or within, a corresponding target or threshold level(s). Following selection and implementation of one of the adjustments to the spark timing value, the controller implement adjustments to the adjusted spark timing value to return to a target spark timing value. The controller can further be adapted to determine adjustments to the air-to-fuel ratio to accommodate operation of the engine at the target spark timing value while maintaining the one or more conditions at or below the corresponding threshold or target level(s).
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: May 19, 2020
    Assignee: Cummins Inc.
    Inventors: Marten H. Dane, Richard A. Booth, Balaji Sampathnarayanan, Jagruti Tembe
  • Patent number: 10655591
    Abstract: A multiple-keyed crankshaft and flywheel provides for different ignition timing options for an internal combustion engine. The crankshaft of the engine includes multiple keyways set at designated angular displacements of the crankshaft that correspond with keyways on a flywheel for providing different timing options for the engine. The flywheel may be mounted to the crankshaft by aligning one of the keyways of the flywheel to one of the keyways of the crankshaft related to a particular ignition timing selection.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: May 19, 2020
    Assignee: Kohler Co.
    Inventors: Michael Kleczewski, James Webster
  • Patent number: 10655544
    Abstract: An engine comprising: a fuel injection device including a rack and an actuator, the rack being configured to regulate the amount of fuel injected to a combustion chamber, the actuator being configured to control the position of the rack; and a control device that controls fuel injection performed by the fuel injection device based on an instructed revolution number, and that performs a dither control on the actuator, wherein the control device has information of a revolution number variation region that is based on the relationship between a dither frequency in the dither control and an engine revolution number, and upon determining that the instructed revolution number is within the revolution number variation region, changes at least one of the dither frequency and the instructed revolution number. Thus, an engine capable of reducing a periodic variation in engine speed which may be caused by a dither control is provided.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: May 19, 2020
    Assignee: YANMAR CO., LTD.
    Inventors: Katsuhiro Yamada, Atsushi Uehara
  • Patent number: 10655633
    Abstract: This impeller is equipped with: an impeller body formed from a resin and shaped as a disk with an axis as the center thereof, and having a boss hole section formed therein which a rotating shaft for rotating around the axis engages; compressor blades provided on the front-surface side of the impeller body; and a ring-shaped reinforcing ring provided inside the impeller body in the circumferential direction of the impeller body.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: May 19, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yasunori Watanabe, Ryoji Okabe
  • Patent number: 10655528
    Abstract: A method is provided for operating an internal combustion engine (ICE), typically together with a vehicle. A corresponding ICE and a related computer program product are also provided.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: May 19, 2020
    Assignee: VOLVO TRUCK CORPORATION
    Inventor: Per Larsson
  • Patent number: 10655555
    Abstract: An engine system includes: an engine including a direct injection valve that injects fuel into a cylinder of the engine and a port injection valve that injects fuel into an intake port of the engine; and an electronic control unit configured to control an operation of the engine by adjusting, based on a state of the engine, a rate of fuel injection from the direct injection valve with respect to total fuel injection and a rate of fuel injection from the port injection valve with respect to the total fuel injection. The electronic control unit executes a malfunction diagnosis with the rate of fuel injection from the direct injection valve set to 100%, when the electronic control unit determines that an execution condition for executing the malfunction diagnosis on a fuel system is satisfied and a power required of the engine is equal to or greater than a prescribed power.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: May 19, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Keisuke Nagakura
  • Patent number: 10655502
    Abstract: A stator assembly of a gas turbine engine according to an example of the present disclosure includes, among other things, a first shroud extending about an axis to bound a flow path. The first shroud defines a first shroud opening. An airfoil has an airfoil body extending from a first end portion. The first end portion is received in the first shroud opening and defines at least one airfoil opening. At least one retention clip has an arcuate portion extending from a first elongated leg portion. The first elongated leg portion and the arcuate portion are received through the at least one airfoil opening such that the at least one retention clip limits movement of the airfoil relative to the first shroud.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: May 19, 2020
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Brian Barainca, Gary F. Fowler
  • Patent number: 10655581
    Abstract: A returnless fuel supply system applicable to an LPG vehicle is provided. The system supplies LPG fuel from an LPG bombe to an engine at a predetermined pressure or greater and prevents the generation of vapor in the LPG fuel, thereby eliminating a need to return a portion of the LPG fuel supplied to the engine to the LPG bombe. Through the application of the returnless fuel supply system that does not return the high temperature fuel to the LPG bombe, the cause of the internal pressure increase in the LPG bombe is eliminated, and thus efficient refueling of LPG bombe with LPG fuel is achieved.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: May 19, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jae Min Lee, Jong Ki Kim, Chang Han Kim
  • Patent number: 10648436
    Abstract: A fuel supply device configured to supply fuel from an inside of a fuel tank to an internal combustion engine includes: a cover body that is installed to an upper wall of the fuel tank; a pump unit that is placed on a bottom wall of the fuel tank and is configured to discharge the fuel from the inside of the fuel tank toward the internal combustion engine; and a coupling stay that couples between the cover body and the pump unit. The coupling stay includes: an upper stay that extends on a lower side of the cover body; and a lower stay that is installed to the pump unit and is slidably fitted to the upper stay in a top-to-bottom direction. A stress concentrating portion, which reduces a section modulus to concentrate a stress around the stress concentrating portion, is formed at a specific location of the lower stay.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: May 12, 2020
    Assignee: DENSO CORPORATION
    Inventors: Rui Adachi, Tadashi Hazama, Norihiro Hayashi, Takashi Akiba, Shingo Fukuoka
  • Patent number: 10648398
    Abstract: In an intake structure of an internal combustion engine, on an intake upstream side from a valve seat of an intake port, a convex portion is provided which protrudes to an inside of the intake port in a place near an outer circumferential portion of a cylinder chamber when viewed from an upper side of the cylinder chamber. The convex portion includes an upstream guide surface extending from an apex of the convex portion to the intake upstream side, and a downstream guide surface extending from the apex to an intake downstream side and including a curved surface recessed inside the convex portion at a middle portion thereof.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: May 12, 2020
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Akira Yoshihara, Koichi Matsumoto, Shigeki Nabetani, Kazuaki Koyama, Yuya Okamoto
  • Patent number: 10648437
    Abstract: A fuel pump includes a mechanical regulating valve arranged in a pump body which modulates the pressure in a high pressure space so that the pressure matches the engine demand. Modulation by the regulating valve requires adjustment of the inlet fuel quantity, adjustment of the volume of the high pressure space, and control of a return fluid communication enabling fuel to exit the high pressure reservoir.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: May 12, 2020
    Assignee: DELPHI AUTOMOTIVE SYSTEMS LUXEMBOURG SA
    Inventors: Arnaud Leblay, Adrien Bossi, Guy Hoffmann
  • Patent number: 10641199
    Abstract: A method for operating an internal combustion engine having a number of cylinders and an injection system having an injection system that has a common rail and a number of injectors associated with the cylinders, wherein an individual accumulator is associated with each injector and stores fuel from the common rail for the injector. The method has the following steps: starting the internal combustion engine, operating the internal combustion engine, shutting off the internal combustion engine. The following steps are also provided: a state indicating an engine standstill is detected, in particular after the internal combustion engine has been shut off, a high-pressure limit value is defined and a target high pressure is specified, a leakage is produced in the common rail without injection, the fuel pressure in the common rail is reduced to the defined high-pressure limit value below the target high pressure by way of the leakage.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: May 5, 2020
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventor: Armin Dölker
  • Patent number: 10641225
    Abstract: A method of controlling a motor assembly for starting an engine and driving a balance shaft includes: determining whether starting or restarting of an engine is desired; operating an actuator such that a motor shaft is moved forward when the starting or restarting of the engine is desired; and starting or restarting the engine by rotating a motor and by driving a start gear, after the operating the actuator.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: May 5, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Dae-Woon Kim
  • Patent number: 10634103
    Abstract: In a fuel injection valve, a movable structure includes: a movable core that includes a first attractive surface and a second attractive surface, which are configured to be attracted toward at least one stationary core when a coil is energized; and an elongated shaft member that has a length, which is measured in a moving direction of the movable structure and is larger than a length of the movable core, which is measured in the moving direction. A modulus of longitudinal elasticity of the elongated shaft member is larger than a modulus of longitudinal elasticity of the movable core.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: April 28, 2020
    Assignee: DENSO CORPORATION
    Inventor: Keita Imai
  • Patent number: 10634086
    Abstract: Methods and systems for operating an engine and determining relative compression ratio differences from a reference cylinder are disclosed. In one example, an engine is rotated via a starter or another type of electric machine and engine deceleration rates related to each engine cylinder are determined. The engine deceleration rates form a basis for compression ratio factors for each engine cylinder.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: April 28, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Brien Fulton, Hoon Cho, Michiel J. Van Nieuwstadt