Patents Examined by John Kwon
  • Patent number: 11187180
    Abstract: An engine includes a cylinder liner and a piston movable within the cylinder liner, a crevice formed between a top land of the piston and the cylinder liner, and an oil entry clearance formed between a top ring of the piston and the cylinder liner. The engine also includes an abnormal combustion inhibitor having an oil recapture surface exposed to the crevice and oriented to limit migration of oil from the crevice toward a combustion chamber in the engine. The abnormal combustion inhibitor includes a groove structure having as a substrate at least one of the cylinder liner or the piston. Related methodology is also disclosed.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: November 30, 2021
    Assignee: Caterpillar Inc.
    Inventors: Kenth I. Svensson, Jaswinder Singh
  • Patent number: 11187172
    Abstract: An engine controller executes a fuel introduction process of introducing, in a state in which the crankshaft of an internal combustion engine is rotating, air-fuel mixture that contains fuel injected by a fuel injection valve into the exhaust passage without burning the air-fuel mixture in the cylinder. When the oxygen concentration of exit gas that has passed through a three-way catalyst decreases during the execution of the fuel introduction process, the engine controller executes a stopping process of stopping the fuel introduction process.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: November 30, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuto Ikeda, Yuki Nose, Yoshiyuki Shogenji, Hirokazu Ando
  • Patent number: 11187140
    Abstract: A method for operating an internal combustion engine including a step of concurrently introducing at least two combustible fuel jets into a combustion chamber of an internal combustion engine. A first combustible fuel jet of the at least two combustible fuel jets is ignited at an ignition time point. In a first operating mode of the internal combustion engine a second combustible fuel jet which is different from the first combustible fuel jet of the at least two combustible fuel jets is ignited after the ignition time point.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: November 30, 2021
    Assignee: MTU Friedrichshafen GmbH
    Inventors: Joachim Schwarte, Samuel Vogel
  • Patent number: 11187138
    Abstract: An engine module for a mixer vehicle includes an engine, a cooling system, and a hood. The cooling system includes a radiator fluidly coupled to the engine and a fan assembly. The fan assembly includes a fan. The hood includes a housing and a door. The housing has a first end configured to be positioned proximate a mixer drum assembly and a second end configured to be positioned proximate a rear end of a chassis of the mixer vehicle. The housing defines an internal cavity within which the engine and the cooling system is disposed. The first end defines an inlet airflow cavity having a bottom surface and an air inlet. The second end defines an opening. The door is pivotally coupled to the second end and positioned to selectively enclose the opening.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: November 30, 2021
    Assignee: Oshkosh Corporation
    Inventors: Greg Steffens, Jeremy Andringa, Connor Hietpas, Jesse Gander
  • Patent number: 11187147
    Abstract: A pressure variation in a fuel tank can be prevented, and leakage of liquid fuel can be prevented even if the fuel tank is inclined in a predetermined direction, without operation for opening and closing a breather passage. An engine generator includes: a first breather passage having an opening at a position above a liquid fuel in a tank bulge section when the engine generator is inclined to the right (corresponding to a first direction); and a second breather passage having an opening at a position above the liquid fuel in the tank bulge section when the engine generator is inclined in the left direction (a second direction).
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: November 30, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hiroaki Kojima, Masashi Kai, Jun Yamamoto, Mitsuhiro Ito
  • Patent number: 11181049
    Abstract: A method for operating an internal combustion engine having a cylinder, an intake valve, an air pipe, and a valve element disposed in the air pipe, includes detecting a signal for causing a fuel supply of the cylinder to switch off. The valve element is moved out of a first position into a second position triggering a lower flow cross-section while the fuel supply is still activated, where a first cam for actuating the intake valve is allocated to the intake valve. While the fuel supply is still activated, switching from the first cam to a second cam and via the second cam the intake valve is actuated such that the intake valve causes a reduced air intake. An exhaust cam shaft for actuating an exhaust valve is set in an advance direction such that a valve intersection of the intake valve and of the exhaust valve ceases.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: November 23, 2021
    Assignee: Daimler AG
    Inventors: Mathias Hauptvogel, Markus Schilling, Peter Hohner
  • Patent number: 11181069
    Abstract: A diesel engine system is provided, which includes a piston having a cavity dented downwardly in a crown surface thereof and having a bottom part, a peripheral part dented so as to be convex radially outward, and a lip part formed above the peripheral part and protruding so as to be convex radially inward in a cross-sectional view. An injection controller causes an injector to perform, during operation in a given operating range, a main injection in which injected fuel is directed to the lip part, and an after-injection in which a smaller amount of the fuel than the main injection is injected at a given timing later than the main injection in an expansion stroke. An injection interval period from an end of the main injection to a start of the after-injection is shorter as a temperature parameter related to a progress of a warmup of engine increases.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: November 23, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Takeshi Matsubara, Naotoshi Shirahashi, Takeshi Inazumi, Tetsuya Fujioka
  • Patent number: 11181018
    Abstract: A Type II valvetrain and engine brake arrangement includes a brake housing defining a hydraulic circuit and a follower piston chamber and a brake piston chamber. A follower piston in the follower piston chamber is configured to follow a rotating brake cam lobe. A brake piston in the brake piston chamber is in pressure responsive relation with the follower piston to move. A finger follower is disposed so that a brake rod coupled to the brake piston engages the finger follower at least when the brake piston is in an activated position. When the brake piston is the activated position, the finger follower pivots from a first end about a pivot as the finger follower follows a valve cam lobe to effect lifting and seating of a cylinder valve. When the brake piston is activated, the finger follower, at least in part, pivots from the first end about the pivot and the brake rod lifts the cylinder valve and released compression from the engine cylinder.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: November 23, 2021
    Assignee: DEERE & COMPANY
    Inventors: Neil S. Erickson, John Mandell
  • Patent number: 11174866
    Abstract: A pressure relief passage includes a first pressure relief passage and a second pressure relief passage. A pressure relief hole is provided in an upper part of the first pressure relief passage in the direction of gravitational force. The second pressure relief passage merges with the first pressure relief passage to form a merging portion. The cross-sectional flow area of a stagnation portion, which is the maximum cross-sectional flow area of the second pressure relief passage, is smaller than the cross-sectional flow area of a connection passage, which is the minimum cross-sectional flow area of the first pressure relief passage.
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: November 16, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Shogo Ito, Ryosuke Fukuyama, Kaho Takeuchi, Daisuke Watanabe, Yohei Takase
  • Patent number: 11174826
    Abstract: Provided is an engine, including: a cylinder; a piston accommodated in the cylinder; a combustion chamber facing the piston; a sliding portion (large-diameter portion) configured to perform a stroke motion together with the piston; a hydraulic surface of the sliding portion facing a side opposite to the combustion chamber; a hydraulic chamber, which the hydraulic surface faces; and an auxiliary hydraulic chamber, which communicates with the hydraulic chamber, and has a volume changeable in accordance with a hydraulic pressure in the hydraulic chamber.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: November 16, 2021
    Assignee: IHI CORPORATION
    Inventors: Yutaka Masuda, Yoshiyuki Umemoto, Jun Teramoto
  • Patent number: 11168641
    Abstract: A diesel engine system has a piston in which a cavity is formed in a crown surface. The cavity has a bottom part, a peripheral part dented so as to be convex radially outward in a cross-sectional view, and a lip part formed above the peripheral part and protruding so as to be convex radially inward in the cross-sectional view. An injection controller causes an injector to perform, during operation in a given operating range, a main injection in which injected fuel is directed to the lip part, and an after-injection in which a smaller amount of fuel than the main injection is injected at a given period later than the main injection in an expansion stroke. An injection interval period that is a period of time from an end of the main injection to a start of the after-injection is shorter as an injection pressure of fuel increases.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: November 9, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Takeshi Matsubara, Naotoshi Shirahashi, Takeru Matsuo, Sangkyu Kim
  • Patent number: 11168639
    Abstract: A control apparatus for a compression-ignition type engine is applied to an engine capable of carrying out partial compression ignition combustion in which an air-fuel mixture is subjected to CI combustion by self-ignition. The control apparatus creates a lean A/F environment where an air-fuel ratio as a ratio between air and fuel in a cylinder exceeds 20 and is lower than 35, or a lean G/F environment where a gas air-fuel ratio as a ratio between entire gas and the fuel in the cylinder exceeds 18 and is lower than 50 and the air-fuel ratio substantially matches a stoichiometric air-fuel ratio. Prior to planned timing of the CI combustion, in the lean A/F environment or the lean G/F environment, the control apparatus causes an ignition plug to generate a spark and to generate a high-temperature portion.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: November 9, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Kota Matsumoto, Tomonori Urushihara, Keiji Maruyama, Masanari Sueoka, Ryohei Ono, Yuji Harada, Toru Miyamoto, Atsushi Inoue, Tatsuhiro Tokunaga, Takuya Ohura, Yusuke Kawai, Tomohiro Nishida, Keita Arai, Yodai Yamaguchi
  • Patent number: 11168628
    Abstract: Disclosed is a control device of an engine 1 including an injector. The injector has a needle which is displaced between a close position where no fuel is allowed to flow into a sac portion and an open position where the fuel is allowed to flow into the sac portion. The control device has a fuel injection controller controlling a fuel injection period and an injector controller controlling a motion of the needle. The injector controller executes control to reduce a moving speed of the needle before the needle reaches the closed position when the injection period ends.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: November 9, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Yoshitaka Wada, Hideaki Yokohata, Yoshiharu Ueki, Kentaro Nomura
  • Patent number: 11162469
    Abstract: A current control circuit for an ignition system (i.e., igniter current limiter) is disclosed. The current control circuit can reduce a coil current over a soft shut down (SSD) period using an insulated gate bipolar transistor (IGBT) that is controlled by a negative feedback loop, which controls the current limit of the IGBT according to a SSD profile. In order to prevent an unwanted current rise during the soft shut down period, the current control circuit compares a gate voltage of the IGBT to a reference signal and based on the comparison can enable the SSD profile to include a fast ramp. The fast ramp quickly lowers the current limit of the IGBT so that the coil current equals the current limit and can be controlled by the negative feedback loop.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: November 2, 2021
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Yasuhiro Nodake
  • Patent number: 11162460
    Abstract: Methods and systems are provided for a cooling arrangement. In one example, the coolant arrangement comprises a heat store configured to store and release heat in response to a temperature of coolant flowing therethrough. The cooling arrangement further comprises an intake air heat exchanger for heating intake air prior to mixing with exhaust gas to decrease condensate formation, in one example.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: November 2, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Hans Guenter Quix, Andreas Kuske, Christian Winge Vigild
  • Patent number: 11156099
    Abstract: A turbine engine can comprise a fan section, compressor section, a combustion section, and a turbine section in axial flow arrangement. At least one of the fan section and compressor section can include an airfoil with a leading edge, and a plurality of riblets can be arranged on the leading edge.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: October 26, 2021
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Nitesh Jain, Abhijeet Jayshingrao Yadav, Kishore Budumuru, Nicholas Joseph Kray
  • Patent number: 11156136
    Abstract: A breather device and a snow removal machine having the breather device have a casing into which blowby gas of an engine flows, an air suction port for letting out gas from the inside of the casing, and a gas-liquid separation mechanism for separating moisture contained in the blowby gas. The gas-liquid separation mechanism separates an inlet, which allows the blowby gas to flow in, and the air suction port by a predetermined distance, and has the air suction port positioned above a liquid path through which the moisture flows. A gas path allows the blowby gas to flow from the inlet to the air suction port without passing through an air cleaner element.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: October 26, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yuki Hase, Atsushi Moroi, Taiga Takamine, Kaku Okabe
  • Patent number: 11156171
    Abstract: A control device for a compression ignition engine is provided. At least in a high-load range where an engine load is higher than a given value, among an operating range where a partial compression ignition combustion is performed, an EGR valve is opened, and a first injection in which fuel is injected at least from an intake stroke to the first half of a compression stroke is carried out. While an engine body is operated in the high-load range, when a torque down request and a request for reducing external EGR gas amount introduced into the cylinder are issued, the opening of the EGR valve is reduced, and a second injection in which fuel is injected in the second half of the compression stroke is carried out, and a ratio of a fuel amount of the second injection to the total fuel amount injected in a combustion cycle is increased.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: October 26, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Inoue, Yusuke Kawai
  • Patent number: 11156179
    Abstract: A system includes a fuel control module and a valve control module. The fuel control module controls a fuel injector to stop fuel delivery to each cylinder of an engine in a vehicle when the vehicle is decelerating. The valve control module controls a valve actuator to actuate intake and exhaust valves of each cylinder of the engine between open and closed positions when fuel delivery to each cylinder of the engine is stopped. The valve control module controls the valve actuator to adjust an amount of airflow through each cylinder of the engine to a minimum amount when fuel delivery to each cylinder of the engine is initially stopped. The valve control module controls the valve actuator to adjust the amount of airflow through each cylinder of the engine to an amount greater than the minimum amount before fuel delivery to each cylinder of the engine is restarted.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: October 26, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Andrew A. Raftopoulos, Michael A. Smith, Robert Gallon, Pratap S. Murthy, Scott T. Feldmann
  • Patent number: 11155256
    Abstract: A control system has at least one electronic control unit for controlling an internal combustion engine in a hybrid vehicle, which records at least the vehicle speed and the driver's desired driving performance and the driving performance specified by a safety control system or a driver assistance system. The control unit is designed such that, below a pre-defined vehicle speed threshold and/or in the event of recognition of an urban area, while in a purely electric driving mode, it only engages the internal combustion engine when the current desired driving performance exceeds a pre-defined upper threshold, preferably once the maximum tractive force at the wheel for purely electric driving is at least reached.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: October 26, 2021
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Ferdinand Wiesbeck, Michael Etzel, Andreas Rank, Jochen Schroeder, Christian Glatz