Patents Examined by Xiao En Mo
  • Patent number: 11066978
    Abstract: Methods and systems are provided for operating a cylinder of an engine including a pre-chamber system. In one example, a method includes flowing gases from a pre-chamber to a cylinder of an engine prior to fueling the cylinder during a combustion cycle, adjusting a composition of the gases by adjusting at least one of an air injection amount to the pre-chamber and a fuel injection amount to the pre-chamber, and igniting an air-fuel mixture in the cylinder via a pre-chamber ignition event, the air-fuel mixture in the cylinder including the gas from the pre-chamber. In this way, combustion qualities in the cylinder may be adjusted in order to increase a performance and/or an efficiency of the cylinder.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: July 20, 2021
    Assignee: Ford Global Technologies, LLC
    Inventor: Chris Paul Glugla
  • Patent number: 11067042
    Abstract: An intake system of an engine supplies gas at least containing fresh air to each cylinder. The system includes an EGR passage that communicates with an internal space of a downstream intake passage and introduces some EGR gas into the downstream intake passage. The EGR passage includes a projected section in a substantially polygonal or cylindrical shape that is projected to the internal space of the downstream intake passage. The projected section is formed in such a shape that a projection length H1 in an outer circumferential surface on an upstream side is longer than a projection length H2 in an outer circumferential surface on a downstream side.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: July 20, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yusuke Oda, Tomomi Watanabe, Junsou Sasaki, Yuichiro Tanaka, Takuya Yamada
  • Patent number: 11067043
    Abstract: An intake manifold including a surge tank having an inlet and a plurality of outlets extended along a first direction, and configured to form a space having a cross section larger than the inlet between the inlet and the plurality of outlets and a plurality of branch pipes. The space is formed by a bottom surface, an upper surface, a first surface extended from a first end of the bottom surface to a first end of the upper surface, and a second surface extended from a second end of the bottom surface to a second end of the upper surface. The inlet is provided at a substantially central portion in a first direction on the first surface, and the bottom surface includes a swelling portion swelled upwardly at a substantially central portion in the first direction.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: July 20, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Keisuke Itagaki, Takeshi Honda
  • Patent number: 11060485
    Abstract: A control valve assembly includes a housing accommodating an electromagnetic coil unit which is disposed in an in-housing passage and drives a valve element to open and close the in-housing passage. An inflow-outflow member is coupled to the housing, and includes an inflow portion having an inflow passage through which evaporative fuel flows toward the in-housing passage, and an outflow portion having an outflow passage through which the evaporative fuel from the in-housing passage flows. The outflow passage in the outflow portion and the inflow passage in the inflow portion communicate with each other through the in-housing passage.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: July 13, 2021
    Assignee: HAMANAKODENSO CO., LTD.
    Inventors: Kousuke Shirai, Yuichiro Kawamura
  • Patent number: 11053839
    Abstract: An intake device of an internal combustion engine includes a partition, a gap, and a projecting part. The partition divides an interior of an intake pipe into a first passage and a second passage. The gap exists at a boundary between an inner face of the intake pipe and the partition or in the partition, and couples the first passage and the second passage. The projecting part is disposed near the gap on a face of the partition or the inner face of the intake pipe that forms an inner face of the first passage, or on a face of the partition or the inner face of the intake pipe that forms an inner face of the second passage.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: July 6, 2021
    Assignee: SUBARU CORPORATION
    Inventor: Nozomu Terunuma
  • Patent number: 11041473
    Abstract: A control device includes an injection control unit, an ignition control unit, an idling stop control unit, and a boost control unit. The injection control unit executes a rich reduction control that makes an air-fuel ratio richer than a stoichiometric air-fuel ratio when the engine operation has been resumed by resuming supply of fuel to a combustion chamber. Further, the boost control unit is configured to execute a valve-closing keeping control that keeps a wastegate closed until a condition for cancelling the valve-closing keeping control has been satisfied by the engine operation that was performed after closing the wastegate during execution of a fuel cut-off control.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: June 22, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Takuya Okubo
  • Patent number: 11041467
    Abstract: A backflow preventer, including one or multiple reducing rings that are disposed in a pipeline; the outer edges of the reducing rings are connected to the inner wall of the pipeline; the multiple reducing rings are arranged along the axis of the pipeline; and the actual internal area of the reducing rings are gradually decreased in the axial direction of the reducing rings. Further disclosed is an engine EGR system including the backflow preventer. The backflow preventer can generate, according to different flowing directions in a pipeline, throttling losses of different degrees; when an air flows in a direction (forward direction) in which the actual internal area of the reducing rings decreases, the throttling loss is small; and when then air flows in a direction (reverse direction) in which the actual internal area of the reducing rings increases, the throttling loss is large.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: June 22, 2021
    Assignee: WEICHAI POWER CO., LTD.
    Inventors: Wei Li, Junlong Liu, Zhijie Li, Jie Pan, Zuofeng Wang, Chuntao Liu, Tianqin Kang
  • Patent number: 11041470
    Abstract: A control system includes a controller. The controller estimates the swing-back amount indicating the turning amount of the crankshaft in the reverse rotation direction until the crankshaft stops. The controller calculates a stop-time counter value which is a value of a crank counter at the time when the engine is stopped based on a final counter value which is the value of the crank counter calculated last before the crankshaft stops and the estimated swing-back amount. The controller corrects the swing-back amount used for calculating the stop-time counter value based on a difference between the number of driving times calculated with reference to the map based on the calculated stop-time counter value and the value of the crank counter and the number of driving times calculated by increasing the number of driving times by one each time the high pressure system fuel pressure increases by the threshold or more.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: June 22, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Daiki Kato, Ryusuke Kuroda, Masanao Idogawa
  • Patent number: 11035755
    Abstract: An in-cylinder pressure sensor system and a pressure sensor adaptor that allows for the inclusion of a pressure sensor to monitor the pressure of an engine cylinder is provided. The pressure sensor adaptor includes a first end, a second end, a threaded section, a cylindrical midsection, and an annular section; and a pressure sensor channel that comprises an opening in the first end and an opening in a second end and spans from the first end to the second end through the threaded section, the cylindrical midsection, and the annular section. The pressure sensor may be housed in the pressure sensor channel of the pressure sensor adaptor.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: June 15, 2021
    Assignee: Caterpillar Inc.
    Inventors: Bradley D. Hemmingsen, Justin D. Bushman
  • Patent number: 11022061
    Abstract: Methods and systems are provided for identifying degraded exhaust gas temperature (EGT) sensor responses. In one example, a method may include cycling an engine between a higher temperature operating mode and a lower temperature operating mode while maintaining engine torque output across the higher temperature operating mode and the lower temperature operating modes, both the higher temperature operating mode and the lower temperature operating mode providing stoichiometric exhaust gas to a downstream catalyst, and characterizing a response behavior of an EGT sensor based on output of the EGT sensor during the cycling. In this way, stepwise exhaust gas temperature changes are produced for characterizing the EGT sensor response without disrupting emissions and torque control.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: June 1, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Michael Scott Christensen, Michael Bastanipour, Douglas Raymond Martin, Adam Joseph Krach
  • Patent number: 11015562
    Abstract: A vehicle and a method use an Idle Stop and Go (ISG) system. The vehicle includes: a battery; a battery sensor configured to measure a lowest voltage of the battery at a time of startup of the vehicle; a driving unit including an engine of the vehicle; and a controller.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: May 25, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Hong Min Oh, Sung Jin Park
  • Patent number: 11011892
    Abstract: This disclosure relates to a pre-chamber spark plug including a housing, a ground electrode, a cap enclosing a pre-chamber, and a center electrode inside the pre-chamber, with transfer passages being formed in the cap. Center axes of the transfer passages diverge from a longitudinal direction of the main combustion chamber. A method of manufacturing such a pre-chamber spark plug is also disclosed. The method includes generating a housing, generating a ground electrode, and generating a cap enclosing a pre-chamber and having transfer passages formed in the cap. The method may further include generating a center electrode inside the pre-chamber, such that center axes of the transfer passages diverge from a longitudinal direction of the main combustion chamber. The method further includes generating the cap by a forming process from a raw material wire or from raw material bars. The method may further include compacting a material forming the cap.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: May 18, 2021
    Assignee: DKT VERWALTUNGS-GMBH
    Inventor: Steffen Kuhnert
  • Patent number: 11002227
    Abstract: A mixed-gas intake device of an engine comprises an air intake duct. A side wall of the air intake duct is provided with an exhaust inlet. The mixed-gas intake device is characterized in that the same also comprises blades disposed in the air intake duct and a flow control device used for adjusting the distance between two adjacent blades. The blades are arranged at an exhaust inlet end. The multiple blades are arranged in a ring. An exhaust intake space is formed between the side wall of the air intake duct and the blades. The mixed-gas intake device uses the flow control device to adjust the distance between two adjacent blades, so as to adjust the amount of input exhaust, thereby eliminating the need to install a dedicated valve. The multiple blades are arranged in a ring, such that exhaust is evenly mixed with air after entering the air intake duct, thereby eliminating the need to install a dedicated mixer, and effectively reducing the overall volume of the mixed-gas intake device.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: May 11, 2021
    Assignee: WEICHAI POWER CO., LTD.
    Inventors: Yuelan Zhong, Ziyang Dai
  • Patent number: 11002178
    Abstract: Methods and systems are provided for a pre-chamber. In one example, a pre-chamber comprises a plurality of venturi passages fluidly coupling it to a primary combustion chamber. The plurality of venturi passages may be configured to assist in drawing out residual gases from a previous combustion event during a current combustion event.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: May 11, 2021
    Assignee: Ford Global Technologies, LLC
    Inventor: Xiaogang Zhang
  • Patent number: 11002236
    Abstract: An object of the present invention is to supply a high-pressure fuel supply pump capable of holding a spring holding member while reducing the height of the pump body. A high-pressure fuel supply pump is provided with a pump body for forming a pressurizing chamber at an inner wall portion, and a flange portion for fixing the pump body to a high-pressure fuel supply pump mounting portion. The high-pressure fuel supply pump is provided with a cylinder and a spring holding member. The cylinder is inserted into a hole portion of the pump body from a lower side and in which the pressurizing chamber is formed further above an uppermost end surface. The spring holding member has an outer peripheral portion press-fitted and fixed to the pump body and a holding portion holding a spring portion for biasing the pump body between the outer peripheral portion and the inner peripheral portion.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: May 11, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Atsuji Saito, Satoshi Usui, Minoru Hashida, Masayuki Suganami, Hiroyuki Yamada, Kenichiro Tokuo, Masamichi Yagai, Yuta Saso
  • Patent number: 10995717
    Abstract: A collecting pressure line (1) for a fuel injection system of an internal combustion engine has a flow-traversable interior (9). The collecting pressure line (1) has at least one injector that is flow-traversable with the aid of a throughflow opening (8). Fluid present in the collecting pressure line (1) is injected with the aid of the injector into a combustion chamber of the internal combustion engine. An elastic member (10) is formed in the interior (9) and is designed to be flow-traversable while bearing against a line inner wall (15) and spaced apart from the throughflow opening (8).
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: May 4, 2021
    Inventors: Joachim Gruenberger, Hartmut Voss
  • Patent number: 10995655
    Abstract: A fuel injection device including a valve body having an injection hole-formed part having a plurality of injection holes on the leading end side of the valve body. An injection hole comprises a crossing angle, ?1, between a central axis of the injection hole-formed part and an injection hole axis, and another injection hole comprises a crossing angle, ?2, between the central axis and another injection hole axis. ?2 is larger than ?1. The injection holes are formed such that a distance between the central axis and an inlet surface center of the injection hole is longer than a distance between the central axis and another inlet surface center of the another injection hole. A straight line beyond an outlet surface in the injection hole axis does not intersect with another straight line beyond another outlet surface in the another injection hole axis.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: May 4, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Akira Iizuka, Tohru Ishikawa, Takao Miyake, Kazuki Yoshimura
  • Patent number: 10989156
    Abstract: An engine (1) includes a cylinder head (3), a retainer (80), a pressing member (70), and an injector (40). The cylinder head (3) has an attachment hole (15) formed therein. The retainer (80) is attached to the cylinder head (3). The pressing member (70) has a pressed surface (77) configured to be pressed by the retainer (80). The injector (40) is inserted into the attachment hole (15) and has an indentation (46) configured to be pressed by the pressing member (70). The indentation (46) is arranged inside the attachment hole (15). The pressed surface (77) is arranged outside the attachment hole (15).
    Type: Grant
    Filed: September 3, 2018
    Date of Patent: April 27, 2021
    Assignee: Yanmar Power Technology Co., Ltd.
    Inventor: Shinya Fukuyoshi
  • Patent number: 10982611
    Abstract: Methods and systems are disclosed for operating an engine that includes a knock control system. The method and system may increase opportunities to learn one or more engine knock background noise levels via changing poppet valve timing and/or fuel injection timing. The method and system may also improve knock detection if knock sensor degradation is suspected.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: April 20, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Rani Kiwan, Christopher Paul Glugla, Mohannad Hakeem, Amey Karnik, James Matthew Kindree
  • Patent number: 10969304
    Abstract: A state detection system for an internal combustion engine is provided. A detection mapping takes, as inputs, rotation waveform variables and a road surface state variable to output a combustion state variable. The rotation waveform variables include information on a difference between cylinders in the rotational speed NE of a crankshaft during periods in which the respective cylinders generate combustion torque. The combustion state variable relates to a level of variations in combustion state among the cylinders. A determination process performed by an execution device determines whether the internal combustion engine is in a predetermined operating state based on an output value of the detection mapping that takes, as inputs, values of the rotation waveform variables and a value of the road surface state variable.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: April 6, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yosuke Hashimoto, Akihiro Katayama, Yuta Oshiro, Kazuki Sugie, Naoya Oka