Patents by Inventor Yusuke Kawai

Yusuke Kawai 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: 11095160
    Abstract: A power transmission device 2 in a non-contact power supply device 1 has: a transmission coil 14 that supplies power to a power reception device 3; and a power supply circuit 10 that supplies AC voltage having a switching frequency at which the transmission coil 14 does not resonate, to the transmission coil 14. A power reception device 3 has: a resonance circuit 20 having a reception coil 21 that receives power from the power transmission device 2 and a resonance capacitor 22 connected in parallel to the reception coil 21; a rectification circuit 24 that rectifies power output from the resonance circuit 20; and a coil 23 connected in series to the reception coil 21, between the resonance circuit 20 and the rectification circuit 24.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: August 17, 2021
    Assignee: Omron Corporation
    Inventors: Goro Nakao, Yusuke Kawai, Toshiyuki Zaitsu, Atsushi Nomura
  • Publication number: 20210239067
    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: Application
    Filed: April 19, 2019
    Publication date: August 5, 2021
    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
  • Publication number: 20210239068
    Abstract: An engine control apparatus includes an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of a expansion stroke to initiate the SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes the injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Energy of the preceding ignition is set to be lower when an in-cylinder temperature specified by an in-cylinder temperature specification section is high than when the in-cylinder temperature is low.
    Type: Application
    Filed: April 23, 2019
    Publication date: August 5, 2021
    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
  • Publication number: 20210239069
    Abstract: Provided is an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes an injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Ignition timing of the preceding ignition is set to be more advanced when an in-cylinder temperature specified by an in-cylinder temperature specification section is high than when the in-cylinder temperature is low.
    Type: Application
    Filed: April 17, 2019
    Publication date: August 5, 2021
    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: 11081906
    Abstract: A contactless power transmission apparatus includes a receiver that includes a resonant circuit including a receiver coil that receives electric power from a transmitter coil included in a transmitter and a resonant capacitor connected in parallel to the receiver coil. The receiver outputs, through an output coil having fewer turns than the receiver coil and a coil connected to the output coil, electric power received by the resonant circuit and rectifies the output power with a rectifier circuit. The transmitter includes a control circuit that controls a voltage and a switching frequency of alternating current power to be supplied to the transmitter coil from a power supply circuit to allow the contactless power transmission apparatus to continuously perform a constant voltage output operation.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: August 3, 2021
    Assignee: OMRON Corporation
    Inventors: Goro Nakao, Atsushi Nomura, Yusuke Kawai, Toshiyuki Zaitsu
  • Publication number: 20210231078
    Abstract: Provided is an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes an injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Ignition timing of the preceding ignition is set to be more retarded when an in-cylinder pressure specified by an in-cylinder pressure specification section is high than when the in-cylinder pressure is low.
    Type: Application
    Filed: April 17, 2019
    Publication date: July 29, 2021
    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
  • Publication number: 20210231077
    Abstract: An engine apparatus includes an ignition control section and an injection control section. When the partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate the SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes the injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Energy of the preceding ignition is set to be lower when a swirl flow is gentle than when the swirl flow is intense.
    Type: Application
    Filed: April 23, 2019
    Publication date: July 29, 2021
    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
  • Publication number: 20210231076
    Abstract: A control apparatus for a compression-ignition type engine is applied to an engine capable of carrying out partial compression ignition combustion. When the partial compression ignition combustion is carried out, an ignition control section of the control apparatus causes an ignition plug to carry out: main ignition in which a spark is generated to initiate the SI combustion; and preceding ignition in which the spark is generated at an earlier time point than the main ignition. An injection control section causes the ignition plug to inject fuel in an intake stroke. The ignition control section sets energy of the preceding ignition to be lower than energy of the main ignition and causes the ignition plug to carry out the preceding ignition after the fuel injection in the intake stroke or an early period or a middle period of a compression stroke.
    Type: Application
    Filed: April 19, 2019
    Publication date: July 29, 2021
    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
  • Publication number: 20210222610
    Abstract: The invention is provided with an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes an injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Timing of the preceding ignition is set to be more retarded when an engine speed is high than when the engine speed is low.
    Type: Application
    Filed: April 17, 2019
    Publication date: July 22, 2021
    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
  • Publication number: 20210222642
    Abstract: An engine control apparatus includes an ignition control section and an injection control section. When the partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of a expansion stroke to initiate the SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes the injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. The energy of the preceding ignition is set to be higher when fuel concentration specified by a fuel concentration specification section is low than when the fuel concentration is high.
    Type: Application
    Filed: April 23, 2019
    Publication date: July 22, 2021
    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
  • Publication number: 20210189945
    Abstract: The invention is provided with an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes an injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Ignition timing of the preceding ignition is set to be more retarded when fuel concentration specified by a fuel concentration specification section is low than when the fuel concentration is high.
    Type: Application
    Filed: April 17, 2019
    Publication date: June 24, 2021
    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
  • Publication number: 20210195099
    Abstract: An apparatus executes the instructions to create a combined image by performing combining processing using a plurality of images of an object captured at different focus positions in an optical axis direction, and acquire contrast values of the plurality of images. A depth of field of the combined image is deeper than a depth of field of each of the plurality of images. The at least one processor further executes instructions to calculate a combining ratio used in the combining processing using the contrast values of the plurality of images. An image in which the object is not in focus among the plurality of images is determined using the contrast values of the plurality of images, and the determined image is not used in the combining processing.
    Type: Application
    Filed: December 8, 2020
    Publication date: June 24, 2021
    Inventor: Yusuke Kawai
  • Patent number: 11044396
    Abstract: An image processing apparatus includes a calculation unit that calculates a composite ratio of each area based on a contrast value of a plurality of images, an adjustment unit that conducts an adjustment to the composite ratio, and a composition unit that generates a composite image by composition for the plurality of images based on a composite ratio resulting from the adjustment, wherein the adjustment unit makes a relationship between the composite ratios of neighboring areas for the image more smooth in the adjustment, and wherein, in the adjustment, a degree of the adjustment of a first area having a first contrast value is higher than a degree of the adjustment of a second area having a second contrast value that is higher than the first contrast value.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: June 22, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yusuke Kawai
  • Publication number: 20210167634
    Abstract: A contactless power supply system includes a contactless power supply device and a power receiving device. Power is supplied from the contactless power supply device to the power receiving device while communication is performed therebetween. The power receiving device includes a power receiving coil unit, and a first communication unit that communicates with the contactless power supply device and attaches information having continuity to data transmitted to the contactless power supply device. The contactless power supply device includes a power supply coil unit, a second communication unit, and a power supply control unit that, when the second communication unit begins to receive data transmitted from the first communication unit, refers to the information having continuity attached to the continuously received data, and if continuity has been lost, performs correction to increase the output value of the power supplied from the power supply coil unit to the power receiving coil unit.
    Type: Application
    Filed: February 18, 2019
    Publication date: June 3, 2021
    Inventors: Takashi MIURA, Toshiyasu MIWATA, Yusuke KAWAI, Masashi SATO
  • Publication number: 20210167639
    Abstract: A contactless power supply system includes a contactless power supply device and a power receiving device. Power is supplied from the contactless power supply device to the power receiving device while communication is performed therebetween. The power receiving device includes a power receiving coil unit, and a first communication unit that attaches information having continuity to data transmitted to the contactless power supply device. The contactless power supply device includes a power supply coil unit, a second communication unit, and a power supply control unit that, in a steady state where communication is performed between two communication units after the second communication unit begins receiving the data transmitted from the first communication unit, refers to information having continuity attached to the data, and if continuity has been lost, performs correction to increase the output value of the power from the power supply coil unit to the power receiving coil unit.
    Type: Application
    Filed: February 18, 2019
    Publication date: June 3, 2021
    Inventors: Takashi MIURA, Toshiyasu MIWATA, Yusuke KAWAI, Masashi SATO
  • Publication number: 20210159731
    Abstract: A power transmission device 2 for a non-contact power supply device 1 has: a transmission coil 14; a coil 15 connected in series to the transmission coil 14 without joining to a reception coil 21 during power transmission, said reception coil being included in a resonance circuit 20 for a power reception device 3; a power supply circuit 10 that supplies, to the transmission coil 14, AC power having a switching frequency at which the transmission coil 14 does not resonate; and a control circuit 19 that controls the switching frequency and voltage of the AC power supplied to the transmission coil 14 and controls whether or not both ends of the coil 15 are short-circuited.
    Type: Application
    Filed: May 10, 2018
    Publication date: May 27, 2021
    Applicant: Omron Corporation
    Inventors: Goro Nakao, Yusuke Kawai, Atsushi Nomura, Toshiyuki Zaitsu
  • Patent number: 11008970
    Abstract: A control device for controlling an engine provided with a fuel pump including a pressurizing chamber, a plunger inserted into the pressurizing chamber and which changes a volume of the pressurizing chamber, and an on-off valve configured to open and close a suction port, is provided. When a pressurizing cycle consists of a period of pressurizing stroke in which the volume of the pressurizing chamber is reduced to allow fuel to be pressurized and a period of suction stroke in which the volume of the pressurizing chamber is increased to allow fuel to be drawn into the pressurizing chamber, a closing cycle of the on-off valve is controlled so that a ratio of the closing cycle to the pressurizing cycle becomes smaller in a second combustion mode where a partial compression-ignition combustion is performed than in a first combustion mode where SI combustion is performed.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: May 18, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Masami Nishida, Toru Miyamae, Shigeki Yamashita, Kazuhiro Takemoto, Michio Ito, Kazuhiro Nishimura, Yusuke Kawai, Tetsuya Chikada, Tatsuhiro Tokunaga
  • Publication number: 20210143676
    Abstract: A power receiving device 3 of a non-contact power supply device 1 has: a resonant circuit 20 having a receiving coil 21 for receiving power from a power transmission device 2; and a rectifier circuit 24 for rectifying power output from the resonant circuit 20. The power transmission device 2 has: a transmission coil 14 for supplying power to the power receiving device 3; a power supply circuit 10 for supplying AC power having an adjustable switching frequency to the power transmission coil 14; and a control circuit 17 that stops the power supply from the power supply circuit 10 to the transmission coil 14 when the non-contact power supply device 1 does not perform a constant voltage output operation even if the switching frequency is changed over a predetermined frequency range.
    Type: Application
    Filed: May 25, 2018
    Publication date: May 13, 2021
    Applicant: Omron Corporation
    Inventors: Goro Nakao, Yusuke Kawai, Toshiyuki Zaitsu, Atsushi Nomura
  • Publication number: 20210143675
    Abstract: A power transmission device 2 for a non-contact power supply device 1 has a transmission coil 14 and a power supply circuit 10 that supplies, to the transmission coil 14, AC power having a switching frequency at which the transmission coil 14 does not resonate. In addition, a power reception device 3 for the non-contact power supply device 1 has: a resonance circuit 20 that has a reception coil 21 and a resonance capacitor 22 resonating in parallel and a first coil 23 connected in series or parallel to the reception coil 21; and a coil 23 connected in series to the reception coil 21.
    Type: Application
    Filed: April 20, 2018
    Publication date: May 13, 2021
    Applicant: Omron Corporation
    Inventors: Goro Nakao, Yusuke Kawai, Toshiyuki Zaitsu
  • Publication number: 20210135495
    Abstract: A power transmission device 2 in a non-contact power supply device 1 has: a transmission coil 14 that supplies power to a power reception device 3; and a power supply circuit 10 that supplies AC voltage having a switching frequency at which the transmission coil 14 does not resonate, to the transmission coil 14. A power reception device 3 has: a resonance circuit 20 having a reception coil 21 that receives power from the power transmission device 2 and a resonance capacitor 22 connected in parallel to the reception coil 21; a rectification circuit 24 that rectifies power output from the resonance circuit 20; and a coil 23 connected in series to the reception coil 21, between the resonance circuit 20 and the rectification circuit 24.
    Type: Application
    Filed: May 11, 2018
    Publication date: May 6, 2021
    Applicant: Omron Corporation
    Inventors: Goro Nakao, Yusuke Kawai, Toshiyuki Zaitsu, Atsushi Nomura