Patents by Inventor Kota INOUE

Kota INOUE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10907550
    Abstract: This control apparatus of an engine includes an engine, a state quantity setting device, an injector, a spark plug, and a controller. The controller outputs a control signal to the spark plug at a predetermined ignition timing such that, after air-fuel mixture is ignited and combustion is started, unburned air-fuel mixture is combusted by autoignition, and the controller advances an ignition timing when the temperature before start of compression in a combustion chamber is to be reduced.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: February 2, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Inoue, Masanari Sueoka, Kota Matsumoto, Tomonori Urushihara
  • Patent number: 10895214
    Abstract: A control system for a compression-ignition engine is provided, which includes the engine, a spark plug, a fuel injection valve, an air-fuel ratio control valve, and a control unit. A geometric compression ratio of the engine is 14:1 or above. The control unit includes a processor configured to execute an air-fuel ratio controlling module for, when the engine being in a given operating state is detected, controlling the air-fuel ratio control valve to bring the air-fuel ratio of the entire mixture gas to a given lean air-fuel ratio that is larger than a stoichiometric air-fuel ratio, and an spark plug controlling module for, after this control, outputting the control signal to the spark plug to perform the ignition at a given ignition timing so that the mixture gas starts combustion by flame propagation and then unburned mixture gas self-ignites. The given ignition timing is stored in a memory.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: January 19, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Inoue, Masanari Sueoka, Kota Matsumoto, Keiji Maruyama
  • Patent number: 10895208
    Abstract: A control system for a compression-ignition engine is provided, which includes an engine configured to combust a mixture gas inside a combustion chamber by compression ignition, a fuel injector attached to the engine, a state function adjusting part attached to the engine and configured to adjust at least introduction of fresh air into the combustion chamber, a three-way catalyst provided in an exhaust passage of the engine, a wall temperature acquiring part configured to acquire a parameter related to a temperature of a wall of the combustion chamber, and a controller. A swirl flow is generated inside the combustion chamber to circle along the wall. When the wall temperature of the combustion chamber is below a given wall temperature, the controller sets an air-fuel ratio of the mixture gas substantially to a stoichiometric air-fuel ratio so as to remain within a purification window of the three-way catalyst.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: January 19, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Inoue, Masanari Sueoka, Kota Matsumoto, Keiji Maruyama
  • Publication number: 20200378335
    Abstract: A structure of a combustion chamber for an engine includes a crown surface of a piston, a cylinder wall surface, a combustion chamber ceiling surface, and an ignition plug which includes an ignition portion. The crown surface of the piston includes: a cavity recessed in the cylinder axis direction; a parallel surface portion which is in parallel to a corresponding region on the combustion chamber ceiling surface at a position above the cylinder axis direction with a gap, when the piston is at a compression top dead center; and an inclined surface portion formed to continue to the parallel surface portion in such a way as to be directed to the ignition plug, when the piston is at a compression top dead center. The parallel surface portion and the corresponding region, in combination, constitute a squish flow generation portion generating a squish flow when the piston is lifted.
    Type: Application
    Filed: May 31, 2018
    Publication date: December 3, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Satoshi IMAMURA, Masaki FUKUMA, Yasushi NAKAHARA, Atsushi INOUE, Kota MATSUMOTO, Yoshiharu UEKI, Michiharu KAWANO, Yuya HONDA, Kento ONISHI
  • Publication number: 20200378334
    Abstract: A structure of a combustion chamber for an engine includes: a crown surface of a piston; a combustion chamber ceiling surface formed on a cylinder head; and an ignition plug mounted on the combustion chamber ceiling surface, and including an ignition portion disposed in such a way as to face the combustion chamber. The crown surface of the piston includes a cavity which is recessed in a cylinder axis direction in a region including a position below the ignition portion of the ignition plug in a plan view from the cylinder axis direction. A rim portion of the cavity includes a guide portion, raised in the cylinder axis direction with respect to an inner region of the rim portion, interposing the ignition portion when the piston is at a compression top dead center, and configured to guide an air-fuel mixture within the combustion chamber to the ignition portion.
    Type: Application
    Filed: May 31, 2018
    Publication date: December 3, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Satoshi IMAMURA, Masaki FUKUMA, Yasushi NAKAHARA, Atsushi INOUE, Kota MATSUMOTO, Yoshiharu UEKI, Michiharu KAWANO, Yuya HONDA, Kento ONISHI
  • Patent number: 10851702
    Abstract: A combustion chamber structure for an engine includes a combustion chamber where SI combustion by spark ignition and CI combustion by self-ignition are conducted. A crown surface includes a cavity recessed to have a bowl-shape, and a pair of raised portions. The cavity includes a bottom portion which is a lower region of the recessed part, the bottom portion having an outer circumferential edge which is circular in a top view. With a height of the raised portion relative to a height position of a deepest portion of the cavity being represented as H1 and a diameter of an outer circumferential edge of the bottom portion of the cavity being represented as D, H1/D as a ratio of the height H1 of the raised portion to the diameter D of the cavity is set to be in a range of 0.05 or more and 0.36 or less.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: December 1, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Satoshi Imamura, Masaki Fukuma, Yasushi Nakahara, Atsushi Inoue, Kota Matsumoto, Michiharu Kawano, Yuya Honda, Futa Nishi
  • Patent number: 10801420
    Abstract: A control device for a compression-ignition engine is provided, which includes an engine having a plurality of cylinders, spark plug, a fuel injector, and a control unit connected to the spark plug and the fuel injector. The control unit causes the engine to perform an all-cylinder operation when the engine operates at a load above a given load, and perform a reduced-cylinder operation at a load below the given load. In the reduced-cylinder operation, the fuel injector injects fuel to one or some of the cylinders to generate mixture gas, the spark plug ignites the mixture gas, and the engine starts, at an air-fuel ratio larger than a stoichiometric air-fuel ratio and a large compression ratio, SI combustion in which the mixture gas is ignited to combust by flame propagation, and then perform CI combustion in which unburned mixture gas ignites by self-ignition.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: October 13, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Inoue, Masanari Sueoka, Kota Matsumoto, Keiji Maruyama
  • Patent number: 10787985
    Abstract: A control device for a compression autoignition engine includes an engine, a state quantity setting device, a spark plug, a controller, and a sensor. The spark plug receives a control signal from the controller and ignites air-fuel mixture at predetermined ignition timing such that the ignited air-fuel mixture is combusted by flame propagation and then unburned air-fuel mixture in a combustion chamber is combusted by autoignition. The controller outputs a control signal to an injector such that preceding injection and succeeding injection are performed in a compression stroke.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: September 29, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Kota Matsumoto, Tomonori Urushihara, Atsushi Inoue, Yusuke Kawai, Toru Miyamoto, Yudai Koshiro
  • Publication number: 20200298839
    Abstract: A parking assistance device performs parking assistance control including steering angle control for changing a steering angle of a vehicle, driving force control for controlling a driving force of the vehicle, and braking force control for controlling a braking force of the vehicle. The parking assistance device notifies an occupant of a driving operation to be performed by the occupant, including a moving operation on a shift lever and an operation on a brake pedal when the vehicle reaches a switching position where a traveling direction of the vehicle is to be switched during performing the parking assistance control. When the driving operation is performed by the occupant, the parking assistance device restarts the parking assistance control at a timing when the occupant stops the operation on the brake pedal.
    Type: Application
    Filed: March 20, 2020
    Publication date: September 24, 2020
    Applicants: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha
    Inventors: Kota Inoue, Yuki Minase, Takuya Nakagawa, Hiroyuki Tachibana, Norio Imai, Nozomu Maeda
  • Publication number: 20200282975
    Abstract: Provided is a parking assist apparatus for a vehicle, the parking assist apparatus including a first module configured to set, as a movement path, a path along which the vehicle is movable to a target position, and determine movement assist information for moving the vehicle along the movement path; and a second module configured to execute parking assist control such that the vehicle moves in accordance with the determined movement assist information, the second module being further configured to, when an occupant performs a first operation before the vehicle has reached the target position, stop the vehicle, and execute pause processing for maintaining the movement assist information.
    Type: Application
    Filed: February 19, 2020
    Publication date: September 10, 2020
    Applicants: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha
    Inventors: Yuki Minase, Kota Inoue, Takuya Nakagawa, Hiroyuki Tachibana, Norio Imai, Nozomu Maeda
  • Patent number: 10770944
    Abstract: A plurality of bus rings, which are arranged at bus ring maintaining portions, include coil connecting portions, which are protruded in an outer direction in a shaft direction of a stator core with respect to the bus ring maintaining portions, and terminals of coils of a stator are bent in an outer direction in a diameter direction of the stator core in a state where end surfaces of wall portions of bobbins are used as base points, and are connected to the coil connecting portions of the bus rings, and the end surfaces of the wall portions are protruded in an outer direction in a shaft direction of the stator core with respect to end surfaces of the bus rings, and are positioned in an inner direction in a shaft direction of the stator core with respect to end surfaces of the coil connecting portions of the bus rings.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: September 8, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Fumitaka Totsuka, Yuki Yamamoto, Masaya Inoue, Yoshiki Kuwahara, Kota Katsuragi, Ryuji Kitamura
  • Patent number: 10724623
    Abstract: The lubrication loop 5 includes a first lubrication flow path L4, a release flow path L6, a low pressure fluid discharge valve 13, a return flow path L7, and a discharge flow path L8. In the low pressure fluid discharge valve 13, an accumulator piston 22 is biased to the other end side of a piston housing chamber 21 by a spring 26 when a pressure of the fluid applied to a piston position control chamber 27 is less than a predetermined pressure so that a supply port 24 and a discharge port 25 communicate with each other via a spool groove 32.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: July 28, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yuki Ono, Tomoaki Mukai, Kota Inoue, Shunsuke Yoshida
  • Patent number: 10708561
    Abstract: To provide a POS terminal or the like which enables adjustment of white balance of an object to be sufficiently accurate even in the change of external light illuminating the object. The POS terminal includes: an image capture unit which captures an object including a plurality of respectively different reference colors and generates an image; a comparison unit which compares a portion of the image relating to each of the reference colors with a standard image which is a standard of the reference colors; and an adjustment unit which adjusts white balance based on a result of the comparison.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: July 7, 2020
    Assignee: NEC Corporation
    Inventors: Takanori Inoue, Hideo Yokoi, Jun Kobayashi, Eiji Muramatsu, Hiroshi Yamada, Kota Iwamoto, Tetsuo Inoshita, Soma Shiraishi
  • Patent number: 10697391
    Abstract: A control system of a compression-ignition engine is provided, which includes an engine configured to cause combustion of a mixture gas inside the combustion chamber, an injector attached to the engine and configured to inject fuel into the combustion chamber, a spark plug disposed to be oriented into the combustion chamber and configured to ignite the mixture gas inside the combustion chamber, and a controller connected to the injector and the spark plug and configured to operate the engine by outputting a control signal to the injector and the spark plug, respectively. After the spark plug ignites the mixture gas to start combustion, unburned mixture gas combusts by self-ignition. The controller outputs the control signal to the injector so that a fuel injection timing is advanced when the engine operates at a high speed than at a low speed.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: June 30, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Inoue, Kota Matsumoto, Yusuke Kawai, Toru Miyamoto, Yudai Koshiro
  • Patent number: 10677187
    Abstract: A combustion control device for a compression autoignition engine includes an engine, a state quantity setting device, a spark plug, a controller, and a sensor. The spark plug receives a control signal from the controller and ignites air-fuel mixture at predetermined ignition timing such that the ignited air-fuel mixture is combusted by flame propagation and then unburned air-fuel mixture in a combustion chamber is combusted by autoignition. The controller outputs a control signal to an injector such that, in a compression stroke, fuel is injected at specific timing at which a line obtained by extending an axis of each hole of the injector overlaps with a specific portion including an opening edge of a cavity in an upper surface of a piston.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: June 9, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Kota Matsumoto, Tomonori Urushihara, Atsushi Inoue, Yusuke Kawai, Toru Miyamoto, Yudai Koshiro
  • Patent number: 10677186
    Abstract: A control apparatus for a compression autoignition engine includes an engine, a spark plug, a controller, and sensors. After the spark plug ignites air-fuel mixture to start combustion, unburned air-fuel mixture is combusted by autoignition. The controller changes an SI rate in accordance with an operation state of the engine. Furthermore, the controller adjusts the SI rate when determining that the SI rate needs to be adjusted.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: June 9, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Inoue, Masanari Sueoka, Kota Matsumoto, Tomonori Urushihara
  • Patent number: 10677185
    Abstract: A control apparatus for an engine includes an engine, an EGR system, a spark plug, a controller, and a supercharging system. While a supercharging system is performing supercharging and the EGR system is introducing burned gas into a combustion chamber, in response to a control signal from the controller, the spark plug ignites air-fuel mixture at predetermined timing so that unburned air-fuel mixture combusts by autoignition after the air-fuel mixture starts to combust by the ignition.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: June 9, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Inoue, Masanari Sueoka, Kota Matsumoto, Tomonori Urushihara
  • Publication number: 20200166003
    Abstract: A structure of a combustion chamber for an engine includes a crown surface of a piston, a combustion chamber ceiling surface, an injector and an ignition plug provided on the combustion chamber ceiling surface, and an intake opening and an exhaust opening opened in the combustion chamber ceiling surface. A side where the intake opening is opened is defined as an intake port side, and a side where the exhaust opening is opened is defined as an exhaust port side. An ignition portion of the ignition plug is disposed on the intake port side. The ignition plug is ignited at a timing after the piston passes a compression top dead center. The injector is disposed on the center portion, and is configured to inject fuel toward the exhaust port side. A cavity is provided on the crown surface. A reverse squish flow generation portion is provided in the combustion chamber.
    Type: Application
    Filed: May 22, 2018
    Publication date: May 28, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Satoshi IMAMURA, Masaki FUKUMA, Yasushi NAKAHARA, Atsushi INOUE, Kota MATSUMOTO, Yoshiharu UEKI, Michiharu KAWANO, Yuya HONDA, Kento ONISHI
  • Publication number: 20200158007
    Abstract: A combustion chamber structure for an engine includes a combustion chamber where SI combustion by spark ignition and CI combustion by self-ignition are conducted. A crown surface includes a cavity recessed to have a bowl-shape; a pair of first raised portions having a mound-shape along a pent roof shape; and a second raised portion provided to protrude at a position orthogonal to a ridge extending direction of the pair of first raised portions. With a height of the first raised portion relative to a height position of a deepest portion of the cavity being represented as H1 and a height of the second raised portion being represented as H2, H1/H2 as a ratio of the height H1 of the first raised portion to the height H2 of the second raised portion is set to be in a range of 1.92 or more and 2.75 or less.
    Type: Application
    Filed: November 8, 2019
    Publication date: May 21, 2020
    Inventors: Satoshi IMAMURA, Masaki FUKUMA, Yasushi NAKAHARA, Atsushi INOUE, Kota MATSUMOTO, Michiharu KAWANO, Yuya HONDA, Futa NISHI
  • Publication number: 20200158006
    Abstract: A combustion chamber structure for an engine includes a combustion chamber where SI combustion by spark ignition and CI combustion by self-ignition are conducted. A crown surface includes a cavity recessed to have a bowl-shape, and a pair of raised portions. The cavity includes a bottom portion which is a lower region of the recessed part, the bottom portion having an outer circumferential edge which is circular in a top view. With a height of the raised portion relative to a height position of a deepest portion of the cavity being represented as H1 and a diameter of an outer circumferential edge of the bottom portion of the cavity being represented as D, H1/D as a ratio of the height H1 of the raised portion to the diameter D of the cavity is set to be in a range of 0.05 or more and 0.36 or less.
    Type: Application
    Filed: November 7, 2019
    Publication date: May 21, 2020
    Inventors: Satoshi IMAMURA, Masaki FUKUMA, Yasushi NAKAHARA, Atsushi INOUE, Kota MATSUMOTO, Michiharu KAWANO, Yuya HONDA, Futa NISHI