Patents Examined by Hai H. Huynh
  • Patent number: 11002211
    Abstract: An engine diagnostic system is provided for diagnosing a deterioration degree of an engine mounted on a vehicle. The engine diagnostic system learns, as a knock learning value, a maximum advancement amount of an ignition timing that reduces knocking. A database stores time-series data of the knock learning value of the engine for each individual engine. The knock learning value is acquired from each of a plurality of vehicles of the same model. An evaluation process computes an evaluation value indicating the deterioration degree of a designated engine using the time-series data of the knock learning value of each engine stored in the database.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: May 11, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tsutomu Miyazaki
  • Patent number: 11002201
    Abstract: A method of determining an air volume in an active purge system may include checking whether an engine operates in an idle state; determining an air volume reaching a combustion chamber of the engine in response to a signal received from a sensor provided in an intake pipe; checking whether an evaporation gas collected in a canister is introduced into the intake pipe; estimating an amount of the evaporation gas introduced into the intake pipe and primarily correcting the air volume determined according to the estimated amount of the evaporation gas; checking whether an opening holding time of an intake valve in the engine is varied due to an operation of a continuously variable valve duration (CVVD) system electrically connected to the controller; and deriving a correction variable by substituting an operation duty of the CVVD system into a formula, a table, or a map provided in advance, and secondarily correcting the primarily corrected air volume according to the correction variable.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: May 11, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Young-Kyu Oh, Keum-Jin Park
  • Patent number: 10995723
    Abstract: In at least some implementations, an ignition system for a combustion engine includes a controller, an ignition circuit, and a wire providing two-way communication between the ignition circuit and the controller. The ignition circuit may include a charge capacitor that is discharged to cause an ignition event. The ignition circuit may be an inductive discharge ignition circuit including a coil and may then also include a second wire that provides electrical power to the coil.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: May 4, 2021
    Assignee: Walbro LLC
    Inventors: Justin T. Dolane, Bradley J. Roche
  • Patent number: 10995706
    Abstract: The present disclosure belongs to the technical field of engines, and specifically relates to a gas mixing device and a natural gas engine. The gas mixing device includes a housing, a first mixing core, a first measurement assembly, a second mixing core, and a second measurement assembly. An air inlet and a combustion gas inlet respectively communicate with the first mixing core to form a mixed gas in the first mixing core; the first measurement assembly is connected to the first mixing core, the second mixing core is connected in the housing, the EGR exhaust gas inlet and the first mixing core respectively communicate with the second mixing core, and the second measurement assembly is connected to the EGR exhaust gas inlet. In the gas mixing device according to the embodiment of the present disclosure, the first measurement assembly and the second measurement assembly respectively provide measurement data for obtaining flow rates of the air, combustion gas and EGR exhaust gas.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: May 4, 2021
    Assignee: Weichai Power Co., Ltd.
    Inventors: Xuguang Tan, Dehui Tong, Zhen Liu
  • Patent number: 10982638
    Abstract: To reduce collision noise caused when an electromagnetic valve of a high-pressure fuel supply pump is opened. Therefore, in a control device for controlling a high-pressure fuel supply pump including: an anchor; a fixed core configured to attract the anchor with an electromagnetic force; a suction valve configured to be opened or closed when the anchor is sucked by the fixed core; and an electromagnetic force generation unit configured to generate the electromagnetic force when applied with a driving voltage, it can be achieved by providing a control unit configured to perform control to lower a driving current from a peak current before a timing at which the anchor is sucked by the fixed core and collides in an operation state where an engine is under no load and an engine rotation speed is equal to or less than a set rotation speed.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: April 20, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Masanori Watanabe, Shunsuke Aritomi, Masayuki Suganami, Ryo Kusakabe
  • Patent number: 10968855
    Abstract: A control support device for supporting control of a vehicle using a learned model obtained by machine learning, includes: a data acquisition unit acquiring sensor information, which is related to a state of an inside or an outside of a supplying vehicle that supplies parameters to be used for the machine learning; a learning unit generating a learned model by performing the machine learning using an input/output data set, which is the sensor information acquired by the data acquisition unit and is data including input parameters and an output parameter of the learned model; and a transmission unit Transmitting at least one of the generated learned model and an output parameter calculated by inputting sensor information of the vehicle, control of which is supported, to the generated learned model as an input parameter.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: April 6, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Eiki Kitagawa, Daiki Yokoyama, Keisuke Nagasaka
  • Patent number: 10968880
    Abstract: Circuits and methods for controlling a coil current are disclosed. The control utilizes current sources to source/sink charge to/from a capacitance of a switching device to turn the switching device ON/OFF. When turned OFF, the switching device blocks coil current from flowing, which can create a large kickback voltage on the coil. To reduce the large kickback voltage, the capacitance can be discharged slowly by a small discharge current. The disclosed circuits and methods provide a gradual reduction of the coil current at a rate that is slow enough to prevent a spark while minimizing a period for shutdown to prevent overheating. The disclosed systems and methods may be simpler than other approaches because the soft shutdown is no ramp signal is required for the reduction. Instead, a rate of gate capacitance discharge is controlled to maintain the kickback voltage at a particular level.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: April 6, 2021
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Mikio Yamagishi
  • Patent number: 10961933
    Abstract: Methods and systems for operating an engine with split lambda modes are provided. At least one example method comprises, calculating a stoichiometric torque output of the plurality of cylinders; then applying one or more lean torque modifiers for every lean cylinder of the one or more non-stoichiometric cylinders to the stoichiometric torque output to calculate a lean torque output. In at least one example, one or more rich torque modifiers for every rich cylinder of the one or more non-stoichiometric cylinders may be applied to the stoichiometric torque output to calculate a rich torque output. Further, the lean torque output and the rich torque output may be summed to calculate a total engine torque output.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: March 30, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Chris Paul Glugla, Rani Kiwan, Joseph Lyle Thomas
  • Patent number: 10961898
    Abstract: A cooling device includes an inner passage, an outer passage, an engine-driven pump, an electromagnetic control valve, and a driving circuit that regulates current flowing through the electromagnetic control valve by activating and deactivating a switching element. A cooling controller for the cooling device includes a processing circuit configured to execute an operation process for operating, when the engine-driven pump is driven, the switching element by setting a duty cycle of an activation time to a switching cycle, which is a reciprocal of a switching frequency of the switching element, to be a larger value when a temperature of the internal combustion engine is low than when the temperature is high and a cycle varying process for setting a longer switching cycle when the temperature of the internal combustion engine is less than a preset temperature than when the temperature is greater than or equal to the preset temperature.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: March 30, 2021
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Rihito Kaneko, Noboru Takagi, Naoto Hisaminato, Mitsuru Yamaguchi, Hirokazu Ando, Masaaki Yamaguchi, Takahiko Aoyagi, Hirotaka Watanabe
  • Patent number: 10954870
    Abstract: Disclosed is a method for detecting the direction of rotation of a crankshaft of an engine of a motor vehicle. The detection method includes in particular, when the crankshaft is in a second predetermined angular position between a low angular position and a high angular position of the crankshaft, a step of commanding the closure of a control valve for the intake of fuel into the high-pressure pump, a step of measuring a second pressure value in the high-pressure rail, and a step of detecting a nominal direction of rotation of the crankshaft if the second pressure value measured is greater than or equal to an expected pressure value or of detecting a reverse direction of rotation of the crankshaft if the second pressure value measured is less than the expected pressure value.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: March 23, 2021
    Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Yves Agnus, Julien Lefevre
  • Patent number: 10947918
    Abstract: A system can control an engine during a shift event of a multi-ratio transmission driven by the engine. The engine can include a throttle valve configured to selectively regulate a flow rate of air entering the engine. The system can include a controller configured to receive shift data indicative of an execution of the shift event by the multi-ratio transmission, receive first sensor data indicative of a temperature of the engine and second sensor data indicative of a temperature of the multi-ratio transmission, obtain a transient air value based on the temperature of the engine and the temperature of the multi-ratio transmission when the controller has received the shift data, and signal the throttle valve to move to a position corresponding to the transient air value when the controller has received the shift data.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: March 16, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Andrew J. Boissiere, Andrew G. Shapiro
  • Patent number: 10947888
    Abstract: Methods and systems are provided for a urea mixer. In one example, a urea mixer may include a plurality of outlets located adjacent a throat of a venturi passage.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: March 16, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Xiaogang Zhang, Jianwen James Yi
  • Patent number: 10947907
    Abstract: An internal combustion engine system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders, an air intake system to provide air to the plurality of cylinders through respective ones of a plurality of intake valves, an exhaust system to release exhaust gas from the plurality of cylinders through respective one of a plurality of exhaust valves, an aftertreatment system to treat exhaust emission from the engine, and a controller coupled to at least one sensor and configured to control a variable valve actuation mechanism to provide variable engine braking for thermal management.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: March 16, 2021
    Assignee: Cummins Inc.
    Inventors: Timothy Shipp, David Langenderfer
  • Patent number: 10941714
    Abstract: An engine including a main fuel injection valve, a pilot fuel injection valve, a liquid fuel supply rail pipe, and a pilot fuel supply rail pipe. The main fuel injection valve supplies liquid fuel from the liquid fuel supply rail pipe to a combustion chamber during combustion in a diffusion combustion system. The pilot fuel injection valve supplies pilot fuel from the pilot fuel supply rail pipe to the combustion chamber in order to ignite gaseous fuel during combustion in a premixed combustion system. The liquid fuel supply rail pipe is disposed at one side of an imaginary vertical plane including an axis of a crank shaft. The pilot fuel supply rail pipe is disposed at the side of the imaginary vertical plane at which the liquid fuel supply rail pipe is disposed.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: March 9, 2021
    Assignee: YANMAR POWER TECHNOLOGY CO., LTD.
    Inventors: Katsuhiro Nishimura, Koichi Hirose
  • Patent number: 10941737
    Abstract: A follower mechanism including an outer cup having a substantially cylindrical side wall, an annular lip portion disposed at a first end of the side wall, an annular ledge disposed on the side wall, the annular ledge being disposed in a plane that is transverse to a longitudinal center axis of the follower mechanism, and an anti-rotation device disposed on the annular ledge. An inner cup includes an annular lip extending radially-outwardly therefrom and a pair of shaft apertures, the inner cup being disposed in the outer cup so that the lip abuts the annular ledge of the outer cup as well as the anti-rotation devices so that the inner cup is non-rotatable with respect to the outer cup. A shaft is received in the shaft apertures, and a roller follower is rotatably received on the shaft.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: March 9, 2021
    Assignee: Koyo Bearings North America LLC
    Inventor: Scott Abrahamson
  • Patent number: 10934955
    Abstract: Methods and systems are provided for injector balancing without disabling a cam actuated high pressure fuel pump. In one example, one of a plurality of cam lobes of the pump is selectively and sequentially disabled while a group of injectors are concurrently operated to learn a pressure drop across each injector. The selection of the injectors is based on the identity and stroke timing of the disabled cam lobe.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: March 2, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Pursifull, David Oshinsky, Paul Hollar, Joseph Thomas, Michael Uhrich
  • Patent number: 10934957
    Abstract: The present invention refers to a method for determining an amount of a substance in exhaust gas of an internal combustion engine, the method comprises the steps of: determining, for an effective condition of the engine, at least one operating parameter; determining, for a reference condition of the engine, a reference amount of the substance present in exhaust gas of the engine in the reference condition when being operated based on the determined operating parameter; determining an intake manifold temperature difference between the effective condition and the reference condition of the engine; and determining an effective amount of the substance in the exhaust gas of the engine in the effective condition in dependence on the determined reference amount of the substance and the determined intake manifold temperature difference.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: March 2, 2021
    Assignee: Perkins Engines Company Limited
    Inventor: Jian Li
  • Patent number: 10927784
    Abstract: The abnormality diagnosis system 1, 1?, 1? of an ammonia detection device 46, 71 comprises: an air-fuel ratio detection device 41, 72 arranged in the exhaust passage 22 at the downstream side of the catalyst 20; an air-fuel ratio control part 51 configured to control an air-fuel ratio of exhaust gas; and an abnormality judgment part 52 configured to judge abnormality of the ammonia detection device. The air-fuel ratio control part performs rich control making the air-fuel ratio of the inflowing exhaust gas richer than a stoichiometric air-fuel ratio. The abnormality judgment part judges that the ammonia detection device is abnormal if, after start of the rich control, an output value of the ammonia detection device does not rise to a reference value before the air-fuel ratio detected by the air-fuel ratio detection device falls to a rich judged air-fuel ratio richer than a stoichiometric air-fuel ratio.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: February 23, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Go Hayashita, Kimikazu Yoda
  • Patent number: 10927772
    Abstract: A control method for an internal combustion engine including a variable compression ratio mechanism which includes: implementing a compression ratio fixing control in which a mechanical compression ratio is fixed to a predetermined low compression ratio, and controlling combustion form in a cylinder to stratified combustion, under engine idling during catalyst warming-up; controlling the combustion form in the cylinder to homogeneous combustion, under an operation state other than the engine idling during the catalyst warming-up; and implementing the compression ratio fixing control and controlling the combustion form in the cylinder to the homogeneous combustion, in response to pressing-down of an accelerator under the engine idling during the catalyst warming-up, and as long as the engine idling during the catalyst warming-up has a possibility to resume in response to release of the accelerator after the pressing-down.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: February 23, 2021
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kenji Suzuki, Tomoki Itou, Yukiyo Yamada
  • Patent number: 10920683
    Abstract: Provided is a novel control device of an internal combustion engine capable of estimating an EGR rate in a transient state with high accuracy. Thus, in the present invention, unit spaces are formed by dividing a reference space of the intake passage into a plurality of spaces along a streamline through which the gas mixture of the intake air and the EGR gas flows, a physical model based on an advection equation for estimating the EGR rate of the gas mixture is established so as to correspond to each of the unit spaces, and the EGR rate at which the gas mixture flows into the combustion chamber is estimated by sequentially estimating the EGR rates of the unit spaces connected to head unit spaces from the head unit spaces by the physical model.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: February 16, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Takafumi Arakawa, Kunihiko Suzuki, Yoichi Iihoshi, Haoyun Shi, Toshio Hori, Yoshikuni Kurashima